/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-98707888a4ba860d5b57d27ee0e051c5b948cbbf-9870788 [2021-06-01 17:32:27,960 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-01 17:32:27,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-01 17:32:27,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-01 17:32:28,041 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-06-01 17:32:28,077 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-01 17:32:28,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-01 17:32:28,077 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-01 17:32:28,078 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-01 17:32:28,080 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-01 17:32:28,080 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-01 17:32:28,080 INFO L138 SettingsManager]: * Use SBE=true [2021-06-01 17:32:28,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-01 17:32:28,080 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-01 17:32:28,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-01 17:32:28,081 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-01 17:32:28,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-01 17:32:28,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-01 17:32:28,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-01 17:32:28,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-01 17:32:28,082 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-01 17:32:28,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-01 17:32:28,082 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-01 17:32:28,083 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-01 17:32:28,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-01 17:32:28,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-01 17:32:28,083 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-01 17:32:28,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-01 17:32:28,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-01 17:32:28,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-01 17:32:28,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-01 17:32:28,084 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-01 17:32:28,084 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-01 17:32:28,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-01 17:32:28,084 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-01 17:32:28,084 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-01 17:32:28,085 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-01 17:32:28,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-01 17:32:28,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-01 17:32:28,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-01 17:32:28,436 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-01 17:32:28,437 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-01 17:32:28,438 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl [2021-06-01 17:32:28,438 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl' [2021-06-01 17:32:28,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-01 17:32:28,469 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-01 17:32:28,470 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-01 17:32:28,470 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-01 17:32:28,470 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-01 17:32:28,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 05:32:28" (1/1) ... [2021-06-01 17:32:28,490 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 05:32:28" (1/1) ... [2021-06-01 17:32:28,498 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-01 17:32:28,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-01 17:32:28,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-01 17:32:28,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-01 17:32:28,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 05:32:28" (1/1) ... [2021-06-01 17:32:28,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 05:32:28" (1/1) ... [2021-06-01 17:32:28,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 05:32:28" (1/1) ... [2021-06-01 17:32:28,510 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 05:32:28" (1/1) ... [2021-06-01 17:32:28,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 05:32:28" (1/1) ... [2021-06-01 17:32:28,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 05:32:28" (1/1) ... [2021-06-01 17:32:28,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 05:32:28" (1/1) ... [2021-06-01 17:32:28,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-01 17:32:28,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-01 17:32:28,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-01 17:32:28,517 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-01 17:32:28,519 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 05:32:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-01 17:32:28,573 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-06-01 17:32:28,573 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-06-01 17:32:28,573 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-06-01 17:32:28,574 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-06-01 17:32:28,574 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-06-01 17:32:28,574 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-06-01 17:32:28,574 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-06-01 17:32:28,574 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-06-01 17:32:28,574 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-06-01 17:32:28,574 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-06-01 17:32:28,574 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-06-01 17:32:28,574 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-06-01 17:32:28,575 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-06-01 17:32:28,575 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-06-01 17:32:28,575 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-06-01 17:32:28,575 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-01 17:32:28,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-01 17:32:28,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-01 17:32:28,575 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-06-01 17:32:28,575 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-06-01 17:32:28,575 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-06-01 17:32:28,576 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-01 17:32:28,713 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-01 17:32:28,713 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-01 17:32:28,714 INFO L202 PluginConnector]: Adding new model example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.06 05:32:28 BoogieIcfgContainer [2021-06-01 17:32:28,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-01 17:32:28,716 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-01 17:32:28,716 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-01 17:32:28,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-01 17:32:28,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.06 05:32:28" (1/2) ... [2021-06-01 17:32:28,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5833816e and model type example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.06 05:32:28, skipping insertion in model container [2021-06-01 17:32:28,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.06 05:32:28" (2/2) ... [2021-06-01 17:32:28,721 INFO L111 eAbstractionObserver]: Analyzing ICFG example_6.bpl [2021-06-01 17:32:28,725 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-01 17:32:28,725 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-01 17:32:28,726 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-01 17:32:28,726 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-01 17:32:28,802 INFO L149 ThreadInstanceAdder]: Constructed 36 joinOtherThreadTransitions. [2021-06-01 17:32:28,820 INFO L255 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-06-01 17:32:28,836 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-01 17:32:28,836 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-01 17:32:28,836 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-01 17:32:28,836 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-01 17:32:28,836 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-01 17:32:28,836 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-01 17:32:28,836 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-01 17:32:28,837 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-01 17:32:28,845 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 52 places, 63 transitions, 264 flow [2021-06-01 17:32:29,252 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 4463 states, 4461 states have (on average 4.459314055144587) internal successors, (19893), 4462 states have internal predecessors, (19893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:29,272 INFO L276 IsEmpty]: Start isEmpty. Operand has 4463 states, 4461 states have (on average 4.459314055144587) internal successors, (19893), 4462 states have internal predecessors, (19893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:29,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:29,315 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:29,316 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:29,316 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:29,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:29,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1530136965, now seen corresponding path program 1 times [2021-06-01 17:32:29,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:29,332 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902719286] [2021-06-01 17:32:29,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:29,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:29,503 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:29,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902719286] [2021-06-01 17:32:29,505 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902719286] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:29,505 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:29,505 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-01 17:32:29,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698777523] [2021-06-01 17:32:29,509 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-01 17:32:29,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:29,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-01 17:32:29,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-01 17:32:29,555 INFO L87 Difference]: Start difference. First operand has 4463 states, 4461 states have (on average 4.459314055144587) internal successors, (19893), 4462 states have internal predecessors, (19893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:29,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:29,652 INFO L93 Difference]: Finished difference Result 3545 states and 15330 transitions. [2021-06-01 17:32:29,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-01 17:32:29,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:29,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:29,707 INFO L225 Difference]: With dead ends: 3545 [2021-06-01 17:32:29,708 INFO L226 Difference]: Without dead ends: 3543 [2021-06-01 17:32:29,710 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-01 17:32:29,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3543 states. [2021-06-01 17:32:29,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3543 to 3543. [2021-06-01 17:32:29,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3543 states, 3542 states have (on average 4.327498588368154) internal successors, (15328), 3542 states have internal predecessors, (15328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:29,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3543 states to 3543 states and 15328 transitions. [2021-06-01 17:32:29,989 INFO L78 Accepts]: Start accepts. Automaton has 3543 states and 15328 transitions. Word has length 25 [2021-06-01 17:32:29,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:29,990 INFO L482 AbstractCegarLoop]: Abstraction has 3543 states and 15328 transitions. [2021-06-01 17:32:29,991 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:29,991 INFO L276 IsEmpty]: Start isEmpty. Operand 3543 states and 15328 transitions. [2021-06-01 17:32:30,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:30,007 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:30,007 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:30,008 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-01 17:32:30,008 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:30,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:30,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1760531173, now seen corresponding path program 1 times [2021-06-01 17:32:30,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:30,012 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621701453] [2021-06-01 17:32:30,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:30,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:30,070 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:30,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621701453] [2021-06-01 17:32:30,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621701453] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:30,070 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:30,070 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-01 17:32:30,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062230913] [2021-06-01 17:32:30,072 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-01 17:32:30,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:30,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-01 17:32:30,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-01 17:32:30,073 INFO L87 Difference]: Start difference. First operand 3543 states and 15328 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:30,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:30,115 INFO L93 Difference]: Finished difference Result 2724 states and 11575 transitions. [2021-06-01 17:32:30,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-01 17:32:30,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:30,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:30,137 INFO L225 Difference]: With dead ends: 2724 [2021-06-01 17:32:30,137 INFO L226 Difference]: Without dead ends: 2724 [2021-06-01 17:32:30,138 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-01 17:32:30,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2724 states. [2021-06-01 17:32:30,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2724 to 2724. [2021-06-01 17:32:30,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2724 states, 2723 states have (on average 4.250826294528094) internal successors, (11575), 2723 states have internal predecessors, (11575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:30,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 11575 transitions. [2021-06-01 17:32:30,330 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 11575 transitions. Word has length 25 [2021-06-01 17:32:30,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:30,331 INFO L482 AbstractCegarLoop]: Abstraction has 2724 states and 11575 transitions. [2021-06-01 17:32:30,331 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:30,332 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 11575 transitions. [2021-06-01 17:32:30,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:30,340 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:30,340 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:30,340 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-01 17:32:30,341 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:30,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:30,341 INFO L82 PathProgramCache]: Analyzing trace with hash 726058139, now seen corresponding path program 1 times [2021-06-01 17:32:30,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:30,342 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488617630] [2021-06-01 17:32:30,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:30,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:30,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:30,361 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:30,361 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488617630] [2021-06-01 17:32:30,361 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488617630] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:30,361 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:30,361 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-01 17:32:30,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7414077] [2021-06-01 17:32:30,362 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-01 17:32:30,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:30,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-01 17:32:30,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-01 17:32:30,363 INFO L87 Difference]: Start difference. First operand 2724 states and 11575 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:30,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:30,391 INFO L93 Difference]: Finished difference Result 2106 states and 8830 transitions. [2021-06-01 17:32:30,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-01 17:32:30,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:30,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:30,406 INFO L225 Difference]: With dead ends: 2106 [2021-06-01 17:32:30,406 INFO L226 Difference]: Without dead ends: 2106 [2021-06-01 17:32:30,406 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-01 17:32:30,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2021-06-01 17:32:30,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 2106. [2021-06-01 17:32:30,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2106 states, 2105 states have (on average 4.194774346793349) internal successors, (8830), 2105 states have internal predecessors, (8830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:30,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 8830 transitions. [2021-06-01 17:32:30,532 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 8830 transitions. Word has length 25 [2021-06-01 17:32:30,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:30,532 INFO L482 AbstractCegarLoop]: Abstraction has 2106 states and 8830 transitions. [2021-06-01 17:32:30,532 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:30,532 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 8830 transitions. [2021-06-01 17:32:30,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:30,539 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:30,539 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:30,539 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-01 17:32:30,539 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:30,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:30,539 INFO L82 PathProgramCache]: Analyzing trace with hash 130806073, now seen corresponding path program 1 times [2021-06-01 17:32:30,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:30,540 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244520136] [2021-06-01 17:32:30,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:30,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:30,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:30,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244520136] [2021-06-01 17:32:30,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244520136] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:30,584 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:30,584 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-01 17:32:30,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690648857] [2021-06-01 17:32:30,586 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-01 17:32:30,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:30,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-01 17:32:30,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-01 17:32:30,587 INFO L87 Difference]: Start difference. First operand 2106 states and 8830 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:30,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:30,634 INFO L93 Difference]: Finished difference Result 1863 states and 7615 transitions. [2021-06-01 17:32:30,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-01 17:32:30,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:30,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:30,647 INFO L225 Difference]: With dead ends: 1863 [2021-06-01 17:32:30,647 INFO L226 Difference]: Without dead ends: 1863 [2021-06-01 17:32:30,647 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-01 17:32:30,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2021-06-01 17:32:30,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 1863. [2021-06-01 17:32:30,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1862 states have (on average 4.08968850698174) internal successors, (7615), 1862 states have internal predecessors, (7615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:30,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 7615 transitions. [2021-06-01 17:32:30,728 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 7615 transitions. Word has length 25 [2021-06-01 17:32:30,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:30,728 INFO L482 AbstractCegarLoop]: Abstraction has 1863 states and 7615 transitions. [2021-06-01 17:32:30,729 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:30,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 7615 transitions. [2021-06-01 17:32:30,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:30,735 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:30,735 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:30,736 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-01 17:32:30,736 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:30,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:30,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1353410907, now seen corresponding path program 1 times [2021-06-01 17:32:30,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:30,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958564790] [2021-06-01 17:32:30,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:30,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:31,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:31,094 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:31,094 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958564790] [2021-06-01 17:32:31,095 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958564790] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:31,095 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:31,095 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:31,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265279004] [2021-06-01 17:32:31,095 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:31,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:31,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:31,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:31,099 INFO L87 Difference]: Start difference. First operand 1863 states and 7615 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:31,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:31,244 INFO L93 Difference]: Finished difference Result 4351 states and 16715 transitions. [2021-06-01 17:32:31,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:31,245 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:31,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:31,281 INFO L225 Difference]: With dead ends: 4351 [2021-06-01 17:32:31,282 INFO L226 Difference]: Without dead ends: 4104 [2021-06-01 17:32:31,282 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 171.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:31,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4104 states. [2021-06-01 17:32:31,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4104 to 1956. [2021-06-01 17:32:31,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1956 states, 1955 states have (on average 4.081841432225064) internal successors, (7980), 1955 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:31,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1956 states to 1956 states and 7980 transitions. [2021-06-01 17:32:31,392 INFO L78 Accepts]: Start accepts. Automaton has 1956 states and 7980 transitions. Word has length 25 [2021-06-01 17:32:31,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:31,392 INFO L482 AbstractCegarLoop]: Abstraction has 1956 states and 7980 transitions. [2021-06-01 17:32:31,392 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:31,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1956 states and 7980 transitions. [2021-06-01 17:32:31,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:31,398 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:31,398 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:31,398 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-01 17:32:31,398 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:31,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:31,399 INFO L82 PathProgramCache]: Analyzing trace with hash -278536259, now seen corresponding path program 2 times [2021-06-01 17:32:31,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:31,400 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996042117] [2021-06-01 17:32:31,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:31,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:31,634 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:31,635 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996042117] [2021-06-01 17:32:31,635 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996042117] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:31,635 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:31,635 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:31,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990588271] [2021-06-01 17:32:31,635 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:31,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:31,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:31,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:31,636 INFO L87 Difference]: Start difference. First operand 1956 states and 7980 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:31,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:31,732 INFO L93 Difference]: Finished difference Result 4422 states and 16954 transitions. [2021-06-01 17:32:31,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:31,733 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:31,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:31,749 INFO L225 Difference]: With dead ends: 4422 [2021-06-01 17:32:31,749 INFO L226 Difference]: Without dead ends: 4060 [2021-06-01 17:32:31,749 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 149.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:31,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4060 states. [2021-06-01 17:32:31,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4060 to 1912. [2021-06-01 17:32:31,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1912 states, 1911 states have (on average 4.0847723704866565) internal successors, (7806), 1911 states have internal predecessors, (7806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:31,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1912 states to 1912 states and 7806 transitions. [2021-06-01 17:32:31,842 INFO L78 Accepts]: Start accepts. Automaton has 1912 states and 7806 transitions. Word has length 25 [2021-06-01 17:32:31,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:31,843 INFO L482 AbstractCegarLoop]: Abstraction has 1912 states and 7806 transitions. [2021-06-01 17:32:31,843 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:31,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1912 states and 7806 transitions. [2021-06-01 17:32:31,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:31,849 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:31,849 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:31,849 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-01 17:32:31,849 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:31,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:31,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1696427911, now seen corresponding path program 3 times [2021-06-01 17:32:31,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:31,850 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829461361] [2021-06-01 17:32:31,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:32,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:32,036 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:32,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829461361] [2021-06-01 17:32:32,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829461361] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:32,036 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:32,036 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:32,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734328084] [2021-06-01 17:32:32,037 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:32,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:32,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:32,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:32,040 INFO L87 Difference]: Start difference. First operand 1912 states and 7806 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:32,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:32,125 INFO L93 Difference]: Finished difference Result 4302 states and 16515 transitions. [2021-06-01 17:32:32,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:32,126 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:32,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:32,142 INFO L225 Difference]: With dead ends: 4302 [2021-06-01 17:32:32,142 INFO L226 Difference]: Without dead ends: 4055 [2021-06-01 17:32:32,143 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 151.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:32,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4055 states. [2021-06-01 17:32:32,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4055 to 1940. [2021-06-01 17:32:32,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1940 states, 1939 states have (on average 4.0711707065497675) internal successors, (7894), 1939 states have internal predecessors, (7894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:32,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1940 states to 1940 states and 7894 transitions. [2021-06-01 17:32:32,254 INFO L78 Accepts]: Start accepts. Automaton has 1940 states and 7894 transitions. Word has length 25 [2021-06-01 17:32:32,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:32,254 INFO L482 AbstractCegarLoop]: Abstraction has 1940 states and 7894 transitions. [2021-06-01 17:32:32,254 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:32,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1940 states and 7894 transitions. [2021-06-01 17:32:32,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:32,260 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:32,261 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:32,261 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-01 17:32:32,261 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:32,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:32,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1008604635, now seen corresponding path program 4 times [2021-06-01 17:32:32,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:32,262 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491172384] [2021-06-01 17:32:32,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:32,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:32,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:32,521 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:32,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491172384] [2021-06-01 17:32:32,521 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491172384] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:32,521 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:32,522 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:32,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977320579] [2021-06-01 17:32:32,522 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:32,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:32,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:32,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:32,523 INFO L87 Difference]: Start difference. First operand 1940 states and 7894 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:32,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:32,617 INFO L93 Difference]: Finished difference Result 4340 states and 16640 transitions. [2021-06-01 17:32:32,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:32,618 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:32,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:32,633 INFO L225 Difference]: With dead ends: 4340 [2021-06-01 17:32:32,634 INFO L226 Difference]: Without dead ends: 4027 [2021-06-01 17:32:32,634 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 181.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:32,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4027 states. [2021-06-01 17:32:32,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4027 to 1912. [2021-06-01 17:32:32,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1912 states, 1911 states have (on average 4.077446363160649) internal successors, (7792), 1911 states have internal predecessors, (7792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:32,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1912 states to 1912 states and 7792 transitions. [2021-06-01 17:32:32,737 INFO L78 Accepts]: Start accepts. Automaton has 1912 states and 7792 transitions. Word has length 25 [2021-06-01 17:32:32,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:32,737 INFO L482 AbstractCegarLoop]: Abstraction has 1912 states and 7792 transitions. [2021-06-01 17:32:32,738 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:32,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1912 states and 7792 transitions. [2021-06-01 17:32:32,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:32,743 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:32,743 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:32,743 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-01 17:32:32,743 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:32,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:32,744 INFO L82 PathProgramCache]: Analyzing trace with hash 370441149, now seen corresponding path program 5 times [2021-06-01 17:32:32,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:32,744 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659684725] [2021-06-01 17:32:32,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:32,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:32,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:32,910 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:32,910 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659684725] [2021-06-01 17:32:32,912 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659684725] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:32,912 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:32,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:32,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249528639] [2021-06-01 17:32:32,913 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:32,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:32,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:32,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:32,914 INFO L87 Difference]: Start difference. First operand 1912 states and 7792 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:33,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:33,011 INFO L93 Difference]: Finished difference Result 4462 states and 17119 transitions. [2021-06-01 17:32:33,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:33,011 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:33,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:33,029 INFO L225 Difference]: With dead ends: 4462 [2021-06-01 17:32:33,029 INFO L226 Difference]: Without dead ends: 4177 [2021-06-01 17:32:33,029 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 143.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:33,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4177 states. [2021-06-01 17:32:33,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4177 to 1991. [2021-06-01 17:32:33,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1991 states, 1990 states have (on average 4.049748743718593) internal successors, (8059), 1990 states have internal predecessors, (8059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:33,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1991 states to 1991 states and 8059 transitions. [2021-06-01 17:32:33,147 INFO L78 Accepts]: Start accepts. Automaton has 1991 states and 8059 transitions. Word has length 25 [2021-06-01 17:32:33,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:33,148 INFO L482 AbstractCegarLoop]: Abstraction has 1991 states and 8059 transitions. [2021-06-01 17:32:33,148 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:33,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1991 states and 8059 transitions. [2021-06-01 17:32:33,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:33,154 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:33,154 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:33,155 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-01 17:32:33,155 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:33,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:33,155 INFO L82 PathProgramCache]: Analyzing trace with hash 668494107, now seen corresponding path program 6 times [2021-06-01 17:32:33,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:33,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178087926] [2021-06-01 17:32:33,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:33,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:33,330 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:33,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178087926] [2021-06-01 17:32:33,330 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178087926] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:33,330 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:33,330 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:33,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421830785] [2021-06-01 17:32:33,331 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:33,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:33,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:33,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:33,332 INFO L87 Difference]: Start difference. First operand 1991 states and 8059 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:33,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:33,430 INFO L93 Difference]: Finished difference Result 4495 states and 17186 transitions. [2021-06-01 17:32:33,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:33,432 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:33,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:33,448 INFO L225 Difference]: With dead ends: 4495 [2021-06-01 17:32:33,448 INFO L226 Difference]: Without dead ends: 4068 [2021-06-01 17:32:33,448 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 131.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:33,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4068 states. [2021-06-01 17:32:33,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4068 to 1882. [2021-06-01 17:32:33,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1882 states, 1881 states have (on average 4.085061137692716) internal successors, (7684), 1881 states have internal predecessors, (7684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:33,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 7684 transitions. [2021-06-01 17:32:33,534 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 7684 transitions. Word has length 25 [2021-06-01 17:32:33,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:33,534 INFO L482 AbstractCegarLoop]: Abstraction has 1882 states and 7684 transitions. [2021-06-01 17:32:33,534 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:33,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 7684 transitions. [2021-06-01 17:32:33,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:33,540 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:33,540 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:33,541 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-01 17:32:33,541 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:33,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:33,541 INFO L82 PathProgramCache]: Analyzing trace with hash 950924155, now seen corresponding path program 7 times [2021-06-01 17:32:33,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:33,541 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483497763] [2021-06-01 17:32:33,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:33,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:33,700 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:33,700 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483497763] [2021-06-01 17:32:33,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483497763] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:33,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:33,701 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:33,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752850994] [2021-06-01 17:32:33,701 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:33,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:33,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:33,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:33,702 INFO L87 Difference]: Start difference. First operand 1882 states and 7684 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:33,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:33,784 INFO L93 Difference]: Finished difference Result 4324 states and 16616 transitions. [2021-06-01 17:32:33,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:33,785 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:33,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:33,798 INFO L225 Difference]: With dead ends: 4324 [2021-06-01 17:32:33,798 INFO L226 Difference]: Without dead ends: 4077 [2021-06-01 17:32:33,799 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 124.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:33,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4077 states. [2021-06-01 17:32:33,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4077 to 1948. [2021-06-01 17:32:33,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1948 states, 1947 states have (on average 4.076527991782229) internal successors, (7937), 1947 states have internal predecessors, (7937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:33,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 7937 transitions. [2021-06-01 17:32:33,894 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 7937 transitions. Word has length 25 [2021-06-01 17:32:33,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:33,894 INFO L482 AbstractCegarLoop]: Abstraction has 1948 states and 7937 transitions. [2021-06-01 17:32:33,895 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:33,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 7937 transitions. [2021-06-01 17:32:33,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:33,900 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:33,900 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:33,900 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-01 17:32:33,900 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:33,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:33,900 INFO L82 PathProgramCache]: Analyzing trace with hash -681023011, now seen corresponding path program 8 times [2021-06-01 17:32:33,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:33,901 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087106267] [2021-06-01 17:32:33,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:34,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:34,073 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:34,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087106267] [2021-06-01 17:32:34,074 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087106267] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:34,074 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:34,074 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:34,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638140345] [2021-06-01 17:32:34,074 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:34,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:34,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:34,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:34,075 INFO L87 Difference]: Start difference. First operand 1948 states and 7937 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:34,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:34,159 INFO L93 Difference]: Finished difference Result 4395 states and 16855 transitions. [2021-06-01 17:32:34,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:34,160 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:34,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:34,174 INFO L225 Difference]: With dead ends: 4395 [2021-06-01 17:32:34,174 INFO L226 Difference]: Without dead ends: 4033 [2021-06-01 17:32:34,174 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 161.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:34,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4033 states. [2021-06-01 17:32:34,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4033 to 1904. [2021-06-01 17:32:34,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1904 states, 1903 states have (on average 4.079348397267473) internal successors, (7763), 1903 states have internal predecessors, (7763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:34,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1904 states to 1904 states and 7763 transitions. [2021-06-01 17:32:34,253 INFO L78 Accepts]: Start accepts. Automaton has 1904 states and 7763 transitions. Word has length 25 [2021-06-01 17:32:34,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:34,253 INFO L482 AbstractCegarLoop]: Abstraction has 1904 states and 7763 transitions. [2021-06-01 17:32:34,253 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:34,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1904 states and 7763 transitions. [2021-06-01 17:32:34,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:34,258 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:34,258 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:34,258 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-01 17:32:34,258 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:34,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:34,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1610144571, now seen corresponding path program 9 times [2021-06-01 17:32:34,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:34,259 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841321126] [2021-06-01 17:32:34,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:34,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:34,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:34,404 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:34,404 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841321126] [2021-06-01 17:32:34,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841321126] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:34,404 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:34,404 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:34,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758306996] [2021-06-01 17:32:34,404 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:34,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:34,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:34,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:34,405 INFO L87 Difference]: Start difference. First operand 1904 states and 7763 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:34,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:34,488 INFO L93 Difference]: Finished difference Result 4273 states and 16411 transitions. [2021-06-01 17:32:34,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:34,488 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:34,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:34,502 INFO L225 Difference]: With dead ends: 4273 [2021-06-01 17:32:34,502 INFO L226 Difference]: Without dead ends: 4026 [2021-06-01 17:32:34,502 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 138.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:34,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4026 states. [2021-06-01 17:32:34,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 1932. [2021-06-01 17:32:34,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1932 states, 1931 states have (on average 4.06576903158985) internal successors, (7851), 1931 states have internal predecessors, (7851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:34,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 7851 transitions. [2021-06-01 17:32:34,581 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 7851 transitions. Word has length 25 [2021-06-01 17:32:34,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:34,582 INFO L482 AbstractCegarLoop]: Abstraction has 1932 states and 7851 transitions. [2021-06-01 17:32:34,582 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:34,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 7851 transitions. [2021-06-01 17:32:34,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:34,587 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:34,587 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:34,587 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-01 17:32:34,587 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:34,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:34,587 INFO L82 PathProgramCache]: Analyzing trace with hash 41216029, now seen corresponding path program 10 times [2021-06-01 17:32:34,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:34,588 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667577334] [2021-06-01 17:32:34,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:34,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:34,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:34,748 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:34,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667577334] [2021-06-01 17:32:34,748 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667577334] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:34,748 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:34,748 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:34,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512718595] [2021-06-01 17:32:34,749 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:34,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:34,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:34,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:34,750 INFO L87 Difference]: Start difference. First operand 1932 states and 7851 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:34,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:34,842 INFO L93 Difference]: Finished difference Result 4309 states and 16531 transitions. [2021-06-01 17:32:34,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:34,843 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:34,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:34,855 INFO L225 Difference]: With dead ends: 4309 [2021-06-01 17:32:34,855 INFO L226 Difference]: Without dead ends: 3998 [2021-06-01 17:32:34,855 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 155.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:34,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3998 states. [2021-06-01 17:32:34,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3998 to 1904. [2021-06-01 17:32:34,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1904 states, 1903 states have (on average 4.0719915922228065) internal successors, (7749), 1903 states have internal predecessors, (7749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:34,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1904 states to 1904 states and 7749 transitions. [2021-06-01 17:32:34,937 INFO L78 Accepts]: Start accepts. Automaton has 1904 states and 7749 transitions. Word has length 25 [2021-06-01 17:32:34,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:34,937 INFO L482 AbstractCegarLoop]: Abstraction has 1904 states and 7749 transitions. [2021-06-01 17:32:34,938 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:34,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1904 states and 7749 transitions. [2021-06-01 17:32:34,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:34,943 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:34,943 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:34,943 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-01 17:32:34,943 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:34,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:34,943 INFO L82 PathProgramCache]: Analyzing trace with hash -596947457, now seen corresponding path program 11 times [2021-06-01 17:32:34,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:34,944 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874424037] [2021-06-01 17:32:34,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:35,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:35,084 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:35,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874424037] [2021-06-01 17:32:35,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874424037] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:35,084 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:35,084 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:35,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596349432] [2021-06-01 17:32:35,085 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:35,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:35,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:35,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:35,085 INFO L87 Difference]: Start difference. First operand 1904 states and 7749 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:35,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:35,182 INFO L93 Difference]: Finished difference Result 4414 states and 16959 transitions. [2021-06-01 17:32:35,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:35,183 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:35,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:35,196 INFO L225 Difference]: With dead ends: 4414 [2021-06-01 17:32:35,196 INFO L226 Difference]: Without dead ends: 4131 [2021-06-01 17:32:35,197 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 146.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:35,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4131 states. [2021-06-01 17:32:35,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4131 to 1966. [2021-06-01 17:32:35,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1966 states, 1965 states have (on average 4.0539440203562345) internal successors, (7966), 1965 states have internal predecessors, (7966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:35,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 7966 transitions. [2021-06-01 17:32:35,275 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 7966 transitions. Word has length 25 [2021-06-01 17:32:35,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:35,275 INFO L482 AbstractCegarLoop]: Abstraction has 1966 states and 7966 transitions. [2021-06-01 17:32:35,275 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:35,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 7966 transitions. [2021-06-01 17:32:35,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:35,280 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:35,280 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:35,280 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-01 17:32:35,280 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:35,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:35,281 INFO L82 PathProgramCache]: Analyzing trace with hash -950086947, now seen corresponding path program 12 times [2021-06-01 17:32:35,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:35,281 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605224402] [2021-06-01 17:32:35,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:35,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:35,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:35,416 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:35,416 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605224402] [2021-06-01 17:32:35,416 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605224402] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:35,416 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:35,417 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:35,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390440832] [2021-06-01 17:32:35,417 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:35,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:35,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:35,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:35,418 INFO L87 Difference]: Start difference. First operand 1966 states and 7966 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:35,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:35,510 INFO L93 Difference]: Finished difference Result 4449 states and 17032 transitions. [2021-06-01 17:32:35,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:35,510 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:35,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:35,523 INFO L225 Difference]: With dead ends: 4449 [2021-06-01 17:32:35,523 INFO L226 Difference]: Without dead ends: 4047 [2021-06-01 17:32:35,523 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 127.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:35,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4047 states. [2021-06-01 17:32:35,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4047 to 1882. [2021-06-01 17:32:35,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1882 states, 1881 states have (on average 4.079213184476342) internal successors, (7673), 1881 states have internal predecessors, (7673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:35,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 7673 transitions. [2021-06-01 17:32:35,606 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 7673 transitions. Word has length 25 [2021-06-01 17:32:35,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:35,606 INFO L482 AbstractCegarLoop]: Abstraction has 1882 states and 7673 transitions. [2021-06-01 17:32:35,606 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:35,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 7673 transitions. [2021-06-01 17:32:35,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:35,611 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:35,611 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:35,611 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-01 17:32:35,611 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:35,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:35,612 INFO L82 PathProgramCache]: Analyzing trace with hash 519414489, now seen corresponding path program 13 times [2021-06-01 17:32:35,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:35,612 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259767859] [2021-06-01 17:32:35,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:35,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:35,762 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:35,762 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259767859] [2021-06-01 17:32:35,763 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259767859] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:35,763 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:35,763 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:35,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905774935] [2021-06-01 17:32:35,763 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:35,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:35,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:35,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:35,764 INFO L87 Difference]: Start difference. First operand 1882 states and 7673 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:35,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:35,846 INFO L93 Difference]: Finished difference Result 4202 states and 16149 transitions. [2021-06-01 17:32:35,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:35,846 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:35,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:35,860 INFO L225 Difference]: With dead ends: 4202 [2021-06-01 17:32:35,860 INFO L226 Difference]: Without dead ends: 3955 [2021-06-01 17:32:35,860 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 144.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:35,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2021-06-01 17:32:35,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 1924. [2021-06-01 17:32:35,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1923 states have (on average 4.069682787311493) internal successors, (7826), 1923 states have internal predecessors, (7826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:35,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 7826 transitions. [2021-06-01 17:32:35,982 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 7826 transitions. Word has length 25 [2021-06-01 17:32:35,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:35,983 INFO L482 AbstractCegarLoop]: Abstraction has 1924 states and 7826 transitions. [2021-06-01 17:32:35,983 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:35,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 7826 transitions. [2021-06-01 17:32:35,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:35,988 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:35,988 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:35,988 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-01 17:32:35,988 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:35,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:35,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1070520261, now seen corresponding path program 14 times [2021-06-01 17:32:35,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:35,989 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283919104] [2021-06-01 17:32:35,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:35,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:36,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:36,149 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:36,149 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283919104] [2021-06-01 17:32:36,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283919104] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:36,149 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:36,150 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:36,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286275287] [2021-06-01 17:32:36,150 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:36,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:36,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:36,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:36,151 INFO L87 Difference]: Start difference. First operand 1924 states and 7826 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:36,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:36,261 INFO L93 Difference]: Finished difference Result 4240 states and 16274 transitions. [2021-06-01 17:32:36,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:36,262 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:36,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:36,277 INFO L225 Difference]: With dead ends: 4240 [2021-06-01 17:32:36,277 INFO L226 Difference]: Without dead ends: 3927 [2021-06-01 17:32:36,278 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 164.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:36,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3927 states. [2021-06-01 17:32:36,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3927 to 1896. [2021-06-01 17:32:36,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1896 states, 1895 states have (on average 4.07598944591029) internal successors, (7724), 1895 states have internal predecessors, (7724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:36,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 7724 transitions. [2021-06-01 17:32:36,366 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 7724 transitions. Word has length 25 [2021-06-01 17:32:36,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:36,366 INFO L482 AbstractCegarLoop]: Abstraction has 1896 states and 7724 transitions. [2021-06-01 17:32:36,366 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:36,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 7724 transitions. [2021-06-01 17:32:36,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:36,371 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:36,371 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:36,371 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-01 17:32:36,371 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:36,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:36,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1600477115, now seen corresponding path program 15 times [2021-06-01 17:32:36,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:36,372 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600195397] [2021-06-01 17:32:36,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:36,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:36,535 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:36,535 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600195397] [2021-06-01 17:32:36,535 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600195397] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:36,535 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:36,535 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:36,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922766077] [2021-06-01 17:32:36,538 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:36,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:36,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:36,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:36,538 INFO L87 Difference]: Start difference. First operand 1896 states and 7724 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:36,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:36,608 INFO L93 Difference]: Finished difference Result 4200 states and 16130 transitions. [2021-06-01 17:32:36,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:36,608 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:36,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:36,619 INFO L225 Difference]: With dead ends: 4200 [2021-06-01 17:32:36,620 INFO L226 Difference]: Without dead ends: 3953 [2021-06-01 17:32:36,620 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 145.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:36,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3953 states. [2021-06-01 17:32:36,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3953 to 1924. [2021-06-01 17:32:36,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1923 states have (on average 4.062402496099844) internal successors, (7812), 1923 states have internal predecessors, (7812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:36,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 7812 transitions. [2021-06-01 17:32:36,707 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 7812 transitions. Word has length 25 [2021-06-01 17:32:36,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:36,707 INFO L482 AbstractCegarLoop]: Abstraction has 1924 states and 7812 transitions. [2021-06-01 17:32:36,707 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:36,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 7812 transitions. [2021-06-01 17:32:36,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:36,712 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:36,712 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:36,712 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-01 17:32:36,713 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:36,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:36,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1686192197, now seen corresponding path program 16 times [2021-06-01 17:32:36,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:36,713 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521113275] [2021-06-01 17:32:36,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:36,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:36,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:36,859 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:36,859 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521113275] [2021-06-01 17:32:36,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521113275] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:36,859 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:36,860 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:36,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246346067] [2021-06-01 17:32:36,860 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:36,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:36,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:36,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:36,861 INFO L87 Difference]: Start difference. First operand 1924 states and 7812 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:36,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:36,959 INFO L93 Difference]: Finished difference Result 4236 states and 16250 transitions. [2021-06-01 17:32:36,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:36,960 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:36,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:36,971 INFO L225 Difference]: With dead ends: 4236 [2021-06-01 17:32:36,971 INFO L226 Difference]: Without dead ends: 3925 [2021-06-01 17:32:36,972 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 149.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:37,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3925 states. [2021-06-01 17:32:37,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3925 to 1896. [2021-06-01 17:32:37,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1896 states, 1895 states have (on average 4.068601583113456) internal successors, (7710), 1895 states have internal predecessors, (7710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:37,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 7710 transitions. [2021-06-01 17:32:37,045 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 7710 transitions. Word has length 25 [2021-06-01 17:32:37,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:37,045 INFO L482 AbstractCegarLoop]: Abstraction has 1896 states and 7710 transitions. [2021-06-01 17:32:37,045 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:37,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 7710 transitions. [2021-06-01 17:32:37,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:37,050 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:37,050 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:37,051 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-01 17:32:37,051 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:37,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:37,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1277328227, now seen corresponding path program 17 times [2021-06-01 17:32:37,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:37,051 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042704537] [2021-06-01 17:32:37,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:37,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:37,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:37,199 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:37,199 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042704537] [2021-06-01 17:32:37,200 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042704537] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:37,200 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:37,200 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:37,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212930156] [2021-06-01 17:32:37,200 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:37,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:37,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:37,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:37,201 INFO L87 Difference]: Start difference. First operand 1896 states and 7710 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:37,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:37,301 INFO L93 Difference]: Finished difference Result 4294 states and 16505 transitions. [2021-06-01 17:32:37,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:37,301 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:37,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:37,310 INFO L225 Difference]: With dead ends: 4294 [2021-06-01 17:32:37,310 INFO L226 Difference]: Without dead ends: 4009 [2021-06-01 17:32:37,311 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 154.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:37,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4009 states. [2021-06-01 17:32:37,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4009 to 1942. [2021-06-01 17:32:37,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1941 states have (on average 4.051004636785162) internal successors, (7863), 1941 states have internal predecessors, (7863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:37,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 7863 transitions. [2021-06-01 17:32:37,397 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 7863 transitions. Word has length 25 [2021-06-01 17:32:37,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:37,397 INFO L482 AbstractCegarLoop]: Abstraction has 1942 states and 7863 transitions. [2021-06-01 17:32:37,397 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:37,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 7863 transitions. [2021-06-01 17:32:37,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:37,403 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:37,403 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:37,403 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-01 17:32:37,403 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:37,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:37,403 INFO L82 PathProgramCache]: Analyzing trace with hash 974302075, now seen corresponding path program 18 times [2021-06-01 17:32:37,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:37,404 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771594588] [2021-06-01 17:32:37,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:37,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:37,531 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:37,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771594588] [2021-06-01 17:32:37,532 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771594588] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:37,532 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:37,532 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:37,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835708795] [2021-06-01 17:32:37,532 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:37,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:37,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:37,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:37,533 INFO L87 Difference]: Start difference. First operand 1942 states and 7863 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:37,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:37,636 INFO L93 Difference]: Finished difference Result 4292 states and 16454 transitions. [2021-06-01 17:32:37,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:37,636 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:37,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:37,647 INFO L225 Difference]: With dead ends: 4292 [2021-06-01 17:32:37,647 INFO L226 Difference]: Without dead ends: 3949 [2021-06-01 17:32:37,647 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 138.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:37,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3949 states. [2021-06-01 17:32:37,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3949 to 1882. [2021-06-01 17:32:37,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1882 states, 1881 states have (on average 4.075491759702286) internal successors, (7666), 1881 states have internal predecessors, (7666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:37,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 7666 transitions. [2021-06-01 17:32:37,718 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 7666 transitions. Word has length 25 [2021-06-01 17:32:37,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:37,718 INFO L482 AbstractCegarLoop]: Abstraction has 1882 states and 7666 transitions. [2021-06-01 17:32:37,718 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:37,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 7666 transitions. [2021-06-01 17:32:37,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:37,723 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:37,723 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:37,723 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-01 17:32:37,723 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:37,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:37,723 INFO L82 PathProgramCache]: Analyzing trace with hash -372114945, now seen corresponding path program 19 times [2021-06-01 17:32:37,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:37,723 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129003161] [2021-06-01 17:32:37,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:37,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:37,840 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:37,840 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129003161] [2021-06-01 17:32:37,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129003161] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:37,840 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:37,840 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:37,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349473899] [2021-06-01 17:32:37,840 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:37,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:37,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:37,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:37,841 INFO L87 Difference]: Start difference. First operand 1882 states and 7666 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:37,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:37,931 INFO L93 Difference]: Finished difference Result 4483 states and 17268 transitions. [2021-06-01 17:32:37,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:37,932 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:37,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:37,940 INFO L225 Difference]: With dead ends: 4483 [2021-06-01 17:32:37,940 INFO L226 Difference]: Without dead ends: 4198 [2021-06-01 17:32:37,941 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 134.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:37,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4198 states. [2021-06-01 17:32:38,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4198 to 1975. [2021-06-01 17:32:38,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1975 states, 1974 states have (on average 4.059777102330294) internal successors, (8014), 1974 states have internal predecessors, (8014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:38,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 8014 transitions. [2021-06-01 17:32:38,009 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 8014 transitions. Word has length 25 [2021-06-01 17:32:38,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:38,009 INFO L482 AbstractCegarLoop]: Abstraction has 1975 states and 8014 transitions. [2021-06-01 17:32:38,009 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:38,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 8014 transitions. [2021-06-01 17:32:38,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:38,014 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:38,014 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:38,014 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-01 17:32:38,014 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:38,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:38,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1879515357, now seen corresponding path program 20 times [2021-06-01 17:32:38,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:38,015 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067268458] [2021-06-01 17:32:38,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:38,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:38,123 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:38,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067268458] [2021-06-01 17:32:38,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067268458] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:38,123 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:38,123 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:38,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535465333] [2021-06-01 17:32:38,124 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:38,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:38,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:38,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:38,124 INFO L87 Difference]: Start difference. First operand 1975 states and 8014 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:38,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:38,208 INFO L93 Difference]: Finished difference Result 4481 states and 17217 transitions. [2021-06-01 17:32:38,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:38,209 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:38,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:38,220 INFO L225 Difference]: With dead ends: 4481 [2021-06-01 17:32:38,220 INFO L226 Difference]: Without dead ends: 4152 [2021-06-01 17:32:38,220 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 120.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:38,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4152 states. [2021-06-01 17:32:38,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4152 to 1929. [2021-06-01 17:32:38,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1929 states, 1928 states have (on average 4.0653526970954355) internal successors, (7838), 1928 states have internal predecessors, (7838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:38,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1929 states to 1929 states and 7838 transitions. [2021-06-01 17:32:38,295 INFO L78 Accepts]: Start accepts. Automaton has 1929 states and 7838 transitions. Word has length 25 [2021-06-01 17:32:38,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:38,295 INFO L482 AbstractCegarLoop]: Abstraction has 1929 states and 7838 transitions. [2021-06-01 17:32:38,295 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:38,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1929 states and 7838 transitions. [2021-06-01 17:32:38,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:38,300 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:38,300 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:38,300 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-01 17:32:38,300 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:38,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:38,301 INFO L82 PathProgramCache]: Analyzing trace with hash -436748451, now seen corresponding path program 21 times [2021-06-01 17:32:38,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:38,301 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415803398] [2021-06-01 17:32:38,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:38,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:38,420 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:38,420 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415803398] [2021-06-01 17:32:38,420 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415803398] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:38,420 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:38,420 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:38,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157974866] [2021-06-01 17:32:38,420 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:38,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:38,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:38,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:38,421 INFO L87 Difference]: Start difference. First operand 1929 states and 7838 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:38,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:38,509 INFO L93 Difference]: Finished difference Result 4551 states and 17479 transitions. [2021-06-01 17:32:38,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:38,509 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:38,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:38,518 INFO L225 Difference]: With dead ends: 4551 [2021-06-01 17:32:38,518 INFO L226 Difference]: Without dead ends: 4266 [2021-06-01 17:32:38,518 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 125.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:38,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4266 states. [2021-06-01 17:32:38,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4266 to 2008. [2021-06-01 17:32:38,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2008 states, 2007 states have (on average 4.03836571998007) internal successors, (8105), 2007 states have internal predecessors, (8105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:38,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 8105 transitions. [2021-06-01 17:32:38,590 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 8105 transitions. Word has length 25 [2021-06-01 17:32:38,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:38,590 INFO L482 AbstractCegarLoop]: Abstraction has 2008 states and 8105 transitions. [2021-06-01 17:32:38,590 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:38,590 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 8105 transitions. [2021-06-01 17:32:38,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:38,595 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:38,595 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:38,595 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-01 17:32:38,595 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:38,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:38,596 INFO L82 PathProgramCache]: Analyzing trace with hash -992536739, now seen corresponding path program 22 times [2021-06-01 17:32:38,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:38,596 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145232457] [2021-06-01 17:32:38,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:38,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:38,726 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:38,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145232457] [2021-06-01 17:32:38,726 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145232457] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:38,726 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:38,726 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:38,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984001660] [2021-06-01 17:32:38,726 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:38,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:38,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:38,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:38,727 INFO L87 Difference]: Start difference. First operand 2008 states and 8105 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:38,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:38,810 INFO L93 Difference]: Finished difference Result 4584 states and 17546 transitions. [2021-06-01 17:32:38,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:38,811 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:38,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:38,822 INFO L225 Difference]: With dead ends: 4584 [2021-06-01 17:32:38,822 INFO L226 Difference]: Without dead ends: 4187 [2021-06-01 17:32:38,822 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 126.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:38,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4187 states. [2021-06-01 17:32:38,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4187 to 1929. [2021-06-01 17:32:38,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1929 states, 1928 states have (on average 4.045124481327801) internal successors, (7799), 1928 states have internal predecessors, (7799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:38,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1929 states to 1929 states and 7799 transitions. [2021-06-01 17:32:38,896 INFO L78 Accepts]: Start accepts. Automaton has 1929 states and 7799 transitions. Word has length 25 [2021-06-01 17:32:38,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:38,896 INFO L482 AbstractCegarLoop]: Abstraction has 1929 states and 7799 transitions. [2021-06-01 17:32:38,896 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:38,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1929 states and 7799 transitions. [2021-06-01 17:32:38,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:38,901 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:38,901 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:38,901 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-01 17:32:38,901 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:38,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:38,902 INFO L82 PathProgramCache]: Analyzing trace with hash 545599163, now seen corresponding path program 23 times [2021-06-01 17:32:38,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:38,902 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607437916] [2021-06-01 17:32:38,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:38,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:39,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:39,013 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:39,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607437916] [2021-06-01 17:32:39,014 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607437916] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:39,014 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:39,014 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:39,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114228373] [2021-06-01 17:32:39,014 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:39,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:39,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:39,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:39,015 INFO L87 Difference]: Start difference. First operand 1929 states and 7799 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:39,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:39,115 INFO L93 Difference]: Finished difference Result 4530 states and 17379 transitions. [2021-06-01 17:32:39,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:39,115 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:39,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:39,124 INFO L225 Difference]: With dead ends: 4530 [2021-06-01 17:32:39,124 INFO L226 Difference]: Without dead ends: 4247 [2021-06-01 17:32:39,125 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 129.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:39,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4247 states. [2021-06-01 17:32:39,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4247 to 1991. [2021-06-01 17:32:39,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1991 states, 1990 states have (on average 4.028140703517588) internal successors, (8016), 1990 states have internal predecessors, (8016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:39,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1991 states to 1991 states and 8016 transitions. [2021-06-01 17:32:39,181 INFO L78 Accepts]: Start accepts. Automaton has 1991 states and 8016 transitions. Word has length 25 [2021-06-01 17:32:39,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:39,181 INFO L482 AbstractCegarLoop]: Abstraction has 1991 states and 8016 transitions. [2021-06-01 17:32:39,182 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:39,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1991 states and 8016 transitions. [2021-06-01 17:32:39,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:39,187 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:39,187 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:39,187 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-01 17:32:39,187 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:39,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:39,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1811790435, now seen corresponding path program 24 times [2021-06-01 17:32:39,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:39,188 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35129893] [2021-06-01 17:32:39,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:39,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:39,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:39,297 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:39,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35129893] [2021-06-01 17:32:39,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35129893] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:39,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:39,297 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:39,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429194475] [2021-06-01 17:32:39,297 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:39,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:39,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:39,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:39,298 INFO L87 Difference]: Start difference. First operand 1991 states and 8016 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:39,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:39,375 INFO L93 Difference]: Finished difference Result 4565 states and 17452 transitions. [2021-06-01 17:32:39,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:39,375 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:39,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:39,386 INFO L225 Difference]: With dead ends: 4565 [2021-06-01 17:32:39,387 INFO L226 Difference]: Without dead ends: 4119 [2021-06-01 17:32:39,387 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:39,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4119 states. [2021-06-01 17:32:39,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4119 to 1863. [2021-06-01 17:32:39,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1862 states have (on average 4.085392051557465) internal successors, (7607), 1862 states have internal predecessors, (7607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:39,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 7607 transitions. [2021-06-01 17:32:39,459 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 7607 transitions. Word has length 25 [2021-06-01 17:32:39,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:39,459 INFO L482 AbstractCegarLoop]: Abstraction has 1863 states and 7607 transitions. [2021-06-01 17:32:39,460 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:39,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 7607 transitions. [2021-06-01 17:32:39,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:39,467 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:39,468 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:39,468 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-01 17:32:39,468 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:39,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:39,468 INFO L82 PathProgramCache]: Analyzing trace with hash 565912923, now seen corresponding path program 25 times [2021-06-01 17:32:39,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:39,468 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006538958] [2021-06-01 17:32:39,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:39,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:39,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:39,592 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:39,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006538958] [2021-06-01 17:32:39,592 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006538958] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:39,592 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:39,592 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:39,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035597036] [2021-06-01 17:32:39,593 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:39,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:39,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:39,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:39,593 INFO L87 Difference]: Start difference. First operand 1863 states and 7607 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:39,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:39,676 INFO L93 Difference]: Finished difference Result 4231 states and 16189 transitions. [2021-06-01 17:32:39,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:39,676 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:39,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:39,686 INFO L225 Difference]: With dead ends: 4231 [2021-06-01 17:32:39,687 INFO L226 Difference]: Without dead ends: 3984 [2021-06-01 17:32:39,688 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:39,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3984 states. [2021-06-01 17:32:39,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3984 to 1949. [2021-06-01 17:32:39,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1949 states, 1948 states have (on average 4.078028747433265) internal successors, (7944), 1948 states have internal predecessors, (7944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:39,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1949 states to 1949 states and 7944 transitions. [2021-06-01 17:32:39,751 INFO L78 Accepts]: Start accepts. Automaton has 1949 states and 7944 transitions. Word has length 25 [2021-06-01 17:32:39,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:39,751 INFO L482 AbstractCegarLoop]: Abstraction has 1949 states and 7944 transitions. [2021-06-01 17:32:39,751 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:39,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1949 states and 7944 transitions. [2021-06-01 17:32:39,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:39,754 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:39,754 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:39,754 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-01 17:32:39,754 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:39,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:39,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1066034243, now seen corresponding path program 26 times [2021-06-01 17:32:39,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:39,755 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689314206] [2021-06-01 17:32:39,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:39,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:39,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:39,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:39,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689314206] [2021-06-01 17:32:39,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689314206] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:39,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:39,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:39,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983750109] [2021-06-01 17:32:39,893 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:39,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:39,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:39,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:39,894 INFO L87 Difference]: Start difference. First operand 1949 states and 7944 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:39,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:39,977 INFO L93 Difference]: Finished difference Result 4302 states and 16428 transitions. [2021-06-01 17:32:39,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:39,978 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:39,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:39,988 INFO L225 Difference]: With dead ends: 4302 [2021-06-01 17:32:39,988 INFO L226 Difference]: Without dead ends: 3940 [2021-06-01 17:32:39,988 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 130.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:40,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3940 states. [2021-06-01 17:32:40,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3940 to 1905. [2021-06-01 17:32:40,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1905 states, 1904 states have (on average 4.080882352941177) internal successors, (7770), 1904 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:40,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 7770 transitions. [2021-06-01 17:32:40,061 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 7770 transitions. Word has length 25 [2021-06-01 17:32:40,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:40,061 INFO L482 AbstractCegarLoop]: Abstraction has 1905 states and 7770 transitions. [2021-06-01 17:32:40,061 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:40,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 7770 transitions. [2021-06-01 17:32:40,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:40,065 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:40,065 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:40,066 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-06-01 17:32:40,066 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:40,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:40,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1811041401, now seen corresponding path program 27 times [2021-06-01 17:32:40,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:40,066 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485831547] [2021-06-01 17:32:40,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:40,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:40,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:40,185 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:40,185 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485831547] [2021-06-01 17:32:40,185 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485831547] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:40,186 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:40,186 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:40,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871897206] [2021-06-01 17:32:40,186 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:40,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:40,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:40,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:40,187 INFO L87 Difference]: Start difference. First operand 1905 states and 7770 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:40,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:40,263 INFO L93 Difference]: Finished difference Result 4182 states and 15989 transitions. [2021-06-01 17:32:40,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:40,264 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:40,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:40,273 INFO L225 Difference]: With dead ends: 4182 [2021-06-01 17:32:40,274 INFO L226 Difference]: Without dead ends: 3935 [2021-06-01 17:32:40,274 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:40,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3935 states. [2021-06-01 17:32:40,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3935 to 1933. [2021-06-01 17:32:40,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1933 states, 1932 states have (on average 4.067287784679089) internal successors, (7858), 1932 states have internal predecessors, (7858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:40,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 7858 transitions. [2021-06-01 17:32:40,330 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 7858 transitions. Word has length 25 [2021-06-01 17:32:40,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:40,330 INFO L482 AbstractCegarLoop]: Abstraction has 1933 states and 7858 transitions. [2021-06-01 17:32:40,330 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:40,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 7858 transitions. [2021-06-01 17:32:40,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:40,333 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:40,333 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:40,334 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-06-01 17:32:40,334 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:40,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:40,334 INFO L82 PathProgramCache]: Analyzing trace with hash 221106651, now seen corresponding path program 28 times [2021-06-01 17:32:40,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:40,334 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793450254] [2021-06-01 17:32:40,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:40,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:40,453 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:40,453 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793450254] [2021-06-01 17:32:40,453 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793450254] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:40,453 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:40,453 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:40,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634488317] [2021-06-01 17:32:40,454 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:40,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:40,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:40,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:40,454 INFO L87 Difference]: Start difference. First operand 1933 states and 7858 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:40,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:40,539 INFO L93 Difference]: Finished difference Result 4220 states and 16114 transitions. [2021-06-01 17:32:40,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:40,539 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:40,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:40,547 INFO L225 Difference]: With dead ends: 4220 [2021-06-01 17:32:40,547 INFO L226 Difference]: Without dead ends: 3907 [2021-06-01 17:32:40,548 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 130.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:40,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3907 states. [2021-06-01 17:32:40,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3907 to 1905. [2021-06-01 17:32:40,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1905 states, 1904 states have (on average 4.073529411764706) internal successors, (7756), 1904 states have internal predecessors, (7756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:40,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 7756 transitions. [2021-06-01 17:32:40,599 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 7756 transitions. Word has length 25 [2021-06-01 17:32:40,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:40,600 INFO L482 AbstractCegarLoop]: Abstraction has 1905 states and 7756 transitions. [2021-06-01 17:32:40,600 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:40,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 7756 transitions. [2021-06-01 17:32:40,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:40,603 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:40,603 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:40,603 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-06-01 17:32:40,603 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:40,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:40,603 INFO L82 PathProgramCache]: Analyzing trace with hash -417056835, now seen corresponding path program 29 times [2021-06-01 17:32:40,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:40,603 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237674805] [2021-06-01 17:32:40,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:40,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:40,710 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:40,710 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237674805] [2021-06-01 17:32:40,710 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237674805] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:40,710 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:40,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:40,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641707537] [2021-06-01 17:32:40,711 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:40,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:40,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:40,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:40,711 INFO L87 Difference]: Start difference. First operand 1905 states and 7756 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:40,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:40,794 INFO L93 Difference]: Finished difference Result 4342 states and 16593 transitions. [2021-06-01 17:32:40,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:40,795 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:40,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:40,805 INFO L225 Difference]: With dead ends: 4342 [2021-06-01 17:32:40,806 INFO L226 Difference]: Without dead ends: 4057 [2021-06-01 17:32:40,806 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:40,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4057 states. [2021-06-01 17:32:40,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4057 to 1984. [2021-06-01 17:32:40,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1984 states, 1983 states have (on average 4.045890065557236) internal successors, (8023), 1983 states have internal predecessors, (8023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:40,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1984 states to 1984 states and 8023 transitions. [2021-06-01 17:32:40,871 INFO L78 Accepts]: Start accepts. Automaton has 1984 states and 8023 transitions. Word has length 25 [2021-06-01 17:32:40,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:40,872 INFO L482 AbstractCegarLoop]: Abstraction has 1984 states and 8023 transitions. [2021-06-01 17:32:40,872 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:40,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1984 states and 8023 transitions. [2021-06-01 17:32:40,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:40,875 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:40,875 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:40,875 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-06-01 17:32:40,875 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:40,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:40,875 INFO L82 PathProgramCache]: Analyzing trace with hash -119003877, now seen corresponding path program 30 times [2021-06-01 17:32:40,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:40,876 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370959203] [2021-06-01 17:32:40,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:40,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:40,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:40,982 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:40,982 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370959203] [2021-06-01 17:32:40,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370959203] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:40,982 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:40,982 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:40,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228760494] [2021-06-01 17:32:40,983 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:40,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:40,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:40,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:40,983 INFO L87 Difference]: Start difference. First operand 1984 states and 8023 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:41,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:41,051 INFO L93 Difference]: Finished difference Result 4375 states and 16660 transitions. [2021-06-01 17:32:41,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:41,051 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:41,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:41,060 INFO L225 Difference]: With dead ends: 4375 [2021-06-01 17:32:41,060 INFO L226 Difference]: Without dead ends: 3948 [2021-06-01 17:32:41,060 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:41,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3948 states. [2021-06-01 17:32:41,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3948 to 1875. [2021-06-01 17:32:41,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1875 states, 1874 states have (on average 4.082710779082177) internal successors, (7651), 1874 states have internal predecessors, (7651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:41,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1875 states to 1875 states and 7651 transitions. [2021-06-01 17:32:41,116 INFO L78 Accepts]: Start accepts. Automaton has 1875 states and 7651 transitions. Word has length 25 [2021-06-01 17:32:41,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:41,116 INFO L482 AbstractCegarLoop]: Abstraction has 1875 states and 7651 transitions. [2021-06-01 17:32:41,117 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:41,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1875 states and 7651 transitions. [2021-06-01 17:32:41,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:41,121 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:41,121 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:41,121 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-06-01 17:32:41,121 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:41,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:41,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1865092601, now seen corresponding path program 31 times [2021-06-01 17:32:41,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:41,122 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946321862] [2021-06-01 17:32:41,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:41,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:41,261 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:41,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946321862] [2021-06-01 17:32:41,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946321862] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:41,261 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:41,261 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:41,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561735753] [2021-06-01 17:32:41,261 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:41,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:41,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:41,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:41,262 INFO L87 Difference]: Start difference. First operand 1875 states and 7651 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:41,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:41,338 INFO L93 Difference]: Finished difference Result 4132 states and 15781 transitions. [2021-06-01 17:32:41,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:41,339 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:41,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:41,347 INFO L225 Difference]: With dead ends: 4132 [2021-06-01 17:32:41,348 INFO L226 Difference]: Without dead ends: 3885 [2021-06-01 17:32:41,348 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 123.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:41,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3885 states. [2021-06-01 17:32:41,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3885 to 1935. [2021-06-01 17:32:41,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1935 states, 1934 states have (on average 4.07187176835574) internal successors, (7875), 1934 states have internal predecessors, (7875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:41,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1935 states to 1935 states and 7875 transitions. [2021-06-01 17:32:41,403 INFO L78 Accepts]: Start accepts. Automaton has 1935 states and 7875 transitions. Word has length 25 [2021-06-01 17:32:41,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:41,403 INFO L482 AbstractCegarLoop]: Abstraction has 1935 states and 7875 transitions. [2021-06-01 17:32:41,403 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:41,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1935 states and 7875 transitions. [2021-06-01 17:32:41,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:41,406 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:41,406 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:41,406 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-06-01 17:32:41,406 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:41,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:41,407 INFO L82 PathProgramCache]: Analyzing trace with hash 233145435, now seen corresponding path program 32 times [2021-06-01 17:32:41,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:41,407 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739470147] [2021-06-01 17:32:41,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:41,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:41,523 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:41,523 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739470147] [2021-06-01 17:32:41,523 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739470147] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:41,523 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:41,523 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:41,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566035768] [2021-06-01 17:32:41,524 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:41,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:41,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:41,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:41,524 INFO L87 Difference]: Start difference. First operand 1935 states and 7875 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:41,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:41,606 INFO L93 Difference]: Finished difference Result 4203 states and 16020 transitions. [2021-06-01 17:32:41,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:41,607 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:41,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:41,617 INFO L225 Difference]: With dead ends: 4203 [2021-06-01 17:32:41,617 INFO L226 Difference]: Without dead ends: 3841 [2021-06-01 17:32:41,617 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:41,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3841 states. [2021-06-01 17:32:41,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3841 to 1891. [2021-06-01 17:32:41,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1891 states, 1890 states have (on average 4.0777777777777775) internal successors, (7707), 1890 states have internal predecessors, (7707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:41,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 7707 transitions. [2021-06-01 17:32:41,686 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 7707 transitions. Word has length 25 [2021-06-01 17:32:41,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:41,687 INFO L482 AbstractCegarLoop]: Abstraction has 1891 states and 7707 transitions. [2021-06-01 17:32:41,687 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:41,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 7707 transitions. [2021-06-01 17:32:41,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:41,690 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:41,690 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:41,690 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-06-01 17:32:41,690 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:41,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:41,690 INFO L82 PathProgramCache]: Analyzing trace with hash -74705479, now seen corresponding path program 33 times [2021-06-01 17:32:41,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:41,690 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238180187] [2021-06-01 17:32:41,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:41,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:41,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:41,802 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:41,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238180187] [2021-06-01 17:32:41,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238180187] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:41,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:41,802 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:41,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138705240] [2021-06-01 17:32:41,802 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:41,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:41,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:41,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:41,803 INFO L87 Difference]: Start difference. First operand 1891 states and 7707 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:41,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:41,876 INFO L93 Difference]: Finished difference Result 4033 states and 15382 transitions. [2021-06-01 17:32:41,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:41,876 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:41,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:41,884 INFO L225 Difference]: With dead ends: 4033 [2021-06-01 17:32:41,884 INFO L226 Difference]: Without dead ends: 3786 [2021-06-01 17:32:41,885 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:41,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2021-06-01 17:32:41,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 1907. [2021-06-01 17:32:41,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1907 states, 1906 states have (on average 4.068730325288563) internal successors, (7755), 1906 states have internal predecessors, (7755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:41,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 7755 transitions. [2021-06-01 17:32:41,936 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 7755 transitions. Word has length 25 [2021-06-01 17:32:41,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:41,936 INFO L482 AbstractCegarLoop]: Abstraction has 1907 states and 7755 transitions. [2021-06-01 17:32:41,936 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:41,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 7755 transitions. [2021-06-01 17:32:41,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:41,939 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:41,939 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:41,939 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-06-01 17:32:41,939 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:41,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:41,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1622627813, now seen corresponding path program 34 times [2021-06-01 17:32:41,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:41,939 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479130273] [2021-06-01 17:32:41,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:42,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:42,036 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:42,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479130273] [2021-06-01 17:32:42,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479130273] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:42,036 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:42,036 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:42,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423642313] [2021-06-01 17:32:42,036 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:42,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:42,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:42,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:42,037 INFO L87 Difference]: Start difference. First operand 1907 states and 7755 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:42,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:42,116 INFO L93 Difference]: Finished difference Result 4033 states and 15366 transitions. [2021-06-01 17:32:42,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:42,117 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:42,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:42,125 INFO L225 Difference]: With dead ends: 4033 [2021-06-01 17:32:42,125 INFO L226 Difference]: Without dead ends: 3770 [2021-06-01 17:32:42,125 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:42,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3770 states. [2021-06-01 17:32:42,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3770 to 1891. [2021-06-01 17:32:42,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1891 states, 1890 states have (on average 4.073544973544974) internal successors, (7699), 1890 states have internal predecessors, (7699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:42,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 7699 transitions. [2021-06-01 17:32:42,174 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 7699 transitions. Word has length 25 [2021-06-01 17:32:42,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:42,174 INFO L482 AbstractCegarLoop]: Abstraction has 1891 states and 7699 transitions. [2021-06-01 17:32:42,174 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:42,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 7699 transitions. [2021-06-01 17:32:42,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:42,177 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:42,177 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:42,177 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-06-01 17:32:42,177 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:42,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:42,177 INFO L82 PathProgramCache]: Analyzing trace with hash 2034175997, now seen corresponding path program 35 times [2021-06-01 17:32:42,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:42,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371926699] [2021-06-01 17:32:42,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:42,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:42,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:42,327 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:42,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371926699] [2021-06-01 17:32:42,327 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371926699] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:42,327 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:42,328 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:42,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19432209] [2021-06-01 17:32:42,328 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:42,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:42,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:42,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:42,329 INFO L87 Difference]: Start difference. First operand 1891 states and 7699 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:42,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:42,413 INFO L93 Difference]: Finished difference Result 4132 states and 15757 transitions. [2021-06-01 17:32:42,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:42,414 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:42,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:42,424 INFO L225 Difference]: With dead ends: 4132 [2021-06-01 17:32:42,424 INFO L226 Difference]: Without dead ends: 3885 [2021-06-01 17:32:42,425 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 156.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:42,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3885 states. [2021-06-01 17:32:42,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3885 to 1935. [2021-06-01 17:32:42,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1935 states, 1934 states have (on average 4.0594622543950365) internal successors, (7851), 1934 states have internal predecessors, (7851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:42,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1935 states to 1935 states and 7851 transitions. [2021-06-01 17:32:42,475 INFO L78 Accepts]: Start accepts. Automaton has 1935 states and 7851 transitions. Word has length 25 [2021-06-01 17:32:42,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:42,475 INFO L482 AbstractCegarLoop]: Abstraction has 1935 states and 7851 transitions. [2021-06-01 17:32:42,476 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:42,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1935 states and 7851 transitions. [2021-06-01 17:32:42,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:42,478 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:42,478 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:42,479 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-06-01 17:32:42,479 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:42,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:42,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1029844059, now seen corresponding path program 36 times [2021-06-01 17:32:42,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:42,479 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378992924] [2021-06-01 17:32:42,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:42,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:42,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:42,594 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:42,594 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378992924] [2021-06-01 17:32:42,594 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378992924] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:42,595 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:42,595 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:42,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332007965] [2021-06-01 17:32:42,595 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:42,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:42,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:42,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:42,595 INFO L87 Difference]: Start difference. First operand 1935 states and 7851 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:42,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:42,652 INFO L93 Difference]: Finished difference Result 4203 states and 15996 transitions. [2021-06-01 17:32:42,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:42,653 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:42,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:42,661 INFO L225 Difference]: With dead ends: 4203 [2021-06-01 17:32:42,661 INFO L226 Difference]: Without dead ends: 3825 [2021-06-01 17:32:42,661 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:42,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3825 states. [2021-06-01 17:32:42,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3825 to 1875. [2021-06-01 17:32:42,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1875 states, 1874 states have (on average 4.078441835645678) internal successors, (7643), 1874 states have internal predecessors, (7643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:42,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1875 states to 1875 states and 7643 transitions. [2021-06-01 17:32:42,711 INFO L78 Accepts]: Start accepts. Automaton has 1875 states and 7643 transitions. Word has length 25 [2021-06-01 17:32:42,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:42,711 INFO L482 AbstractCegarLoop]: Abstraction has 1875 states and 7643 transitions. [2021-06-01 17:32:42,711 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:42,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1875 states and 7643 transitions. [2021-06-01 17:32:42,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:42,714 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:42,714 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:42,714 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-06-01 17:32:42,714 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:42,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:42,715 INFO L82 PathProgramCache]: Analyzing trace with hash -528757417, now seen corresponding path program 37 times [2021-06-01 17:32:42,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:42,715 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086109403] [2021-06-01 17:32:42,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:42,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:42,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:42,818 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:42,818 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086109403] [2021-06-01 17:32:42,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086109403] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:42,819 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:42,819 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:42,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547886971] [2021-06-01 17:32:42,819 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:42,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:42,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:42,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:42,820 INFO L87 Difference]: Start difference. First operand 1875 states and 7643 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:42,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:42,886 INFO L93 Difference]: Finished difference Result 4010 states and 15317 transitions. [2021-06-01 17:32:42,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:42,887 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:42,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:42,894 INFO L225 Difference]: With dead ends: 4010 [2021-06-01 17:32:42,894 INFO L226 Difference]: Without dead ends: 3763 [2021-06-01 17:32:42,895 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:42,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3763 states. [2021-06-01 17:32:42,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3763 to 1911. [2021-06-01 17:32:42,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1911 states, 1910 states have (on average 4.066492146596858) internal successors, (7767), 1910 states have internal predecessors, (7767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:42,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1911 states to 1911 states and 7767 transitions. [2021-06-01 17:32:42,942 INFO L78 Accepts]: Start accepts. Automaton has 1911 states and 7767 transitions. Word has length 25 [2021-06-01 17:32:42,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:42,942 INFO L482 AbstractCegarLoop]: Abstraction has 1911 states and 7767 transitions. [2021-06-01 17:32:42,942 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:42,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1911 states and 7767 transitions. [2021-06-01 17:32:42,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:42,945 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:42,945 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:42,945 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-06-01 17:32:42,945 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:42,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:42,945 INFO L82 PathProgramCache]: Analyzing trace with hash -2118692167, now seen corresponding path program 38 times [2021-06-01 17:32:42,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:42,946 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285140000] [2021-06-01 17:32:42,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:43,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:43,063 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:43,063 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285140000] [2021-06-01 17:32:43,063 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285140000] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:43,063 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:43,063 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:43,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897418159] [2021-06-01 17:32:43,063 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:43,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:43,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:43,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:43,064 INFO L87 Difference]: Start difference. First operand 1911 states and 7767 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:43,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:43,148 INFO L93 Difference]: Finished difference Result 4048 states and 15442 transitions. [2021-06-01 17:32:43,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:43,149 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:43,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:43,159 INFO L225 Difference]: With dead ends: 4048 [2021-06-01 17:32:43,159 INFO L226 Difference]: Without dead ends: 3735 [2021-06-01 17:32:43,159 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:43,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3735 states. [2021-06-01 17:32:43,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3735 to 1883. [2021-06-01 17:32:43,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1883 states, 1882 states have (on average 4.075982996811902) internal successors, (7671), 1882 states have internal predecessors, (7671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:43,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 7671 transitions. [2021-06-01 17:32:43,226 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 7671 transitions. Word has length 25 [2021-06-01 17:32:43,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:43,226 INFO L482 AbstractCegarLoop]: Abstraction has 1883 states and 7671 transitions. [2021-06-01 17:32:43,226 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:43,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 7671 transitions. [2021-06-01 17:32:43,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:43,230 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:43,230 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:43,230 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-06-01 17:32:43,230 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:43,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:43,230 INFO L82 PathProgramCache]: Analyzing trace with hash -735565383, now seen corresponding path program 39 times [2021-06-01 17:32:43,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:43,231 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186144627] [2021-06-01 17:32:43,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:43,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:43,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:43,317 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:43,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186144627] [2021-06-01 17:32:43,317 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186144627] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:43,317 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:43,317 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:43,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663245788] [2021-06-01 17:32:43,318 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:43,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:43,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:43,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:43,318 INFO L87 Difference]: Start difference. First operand 1883 states and 7671 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:43,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:43,375 INFO L93 Difference]: Finished difference Result 3960 states and 15104 transitions. [2021-06-01 17:32:43,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:43,375 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:43,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:43,383 INFO L225 Difference]: With dead ends: 3960 [2021-06-01 17:32:43,383 INFO L226 Difference]: Without dead ends: 3713 [2021-06-01 17:32:43,383 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 85.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:43,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3713 states. [2021-06-01 17:32:43,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3713 to 1899. [2021-06-01 17:32:43,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1899 states, 1898 states have (on average 4.066912539515279) internal successors, (7719), 1898 states have internal predecessors, (7719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:43,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1899 states to 1899 states and 7719 transitions. [2021-06-01 17:32:43,433 INFO L78 Accepts]: Start accepts. Automaton has 1899 states and 7719 transitions. Word has length 25 [2021-06-01 17:32:43,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:43,433 INFO L482 AbstractCegarLoop]: Abstraction has 1899 states and 7719 transitions. [2021-06-01 17:32:43,433 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:43,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1899 states and 7719 transitions. [2021-06-01 17:32:43,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:43,436 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:43,436 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:43,436 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-06-01 17:32:43,436 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:43,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:43,437 INFO L82 PathProgramCache]: Analyzing trace with hash 944931257, now seen corresponding path program 40 times [2021-06-01 17:32:43,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:43,437 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127978970] [2021-06-01 17:32:43,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:43,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:43,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:43,538 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:43,538 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127978970] [2021-06-01 17:32:43,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127978970] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:43,538 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:43,538 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:43,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414769266] [2021-06-01 17:32:43,538 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:43,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:43,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:43,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:43,539 INFO L87 Difference]: Start difference. First operand 1899 states and 7719 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:43,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:43,624 INFO L93 Difference]: Finished difference Result 3960 states and 15088 transitions. [2021-06-01 17:32:43,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:43,624 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:43,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:43,631 INFO L225 Difference]: With dead ends: 3960 [2021-06-01 17:32:43,632 INFO L226 Difference]: Without dead ends: 3697 [2021-06-01 17:32:43,632 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:43,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3697 states. [2021-06-01 17:32:43,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3697 to 1883. [2021-06-01 17:32:43,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1883 states, 1882 states have (on average 4.07173219978746) internal successors, (7663), 1882 states have internal predecessors, (7663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:43,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 7663 transitions. [2021-06-01 17:32:43,681 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 7663 transitions. Word has length 25 [2021-06-01 17:32:43,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:43,681 INFO L482 AbstractCegarLoop]: Abstraction has 1883 states and 7663 transitions. [2021-06-01 17:32:43,681 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:43,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 7663 transitions. [2021-06-01 17:32:43,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:43,683 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:43,684 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:43,684 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-06-01 17:32:43,684 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:43,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:43,684 INFO L82 PathProgramCache]: Analyzing trace with hash 681596571, now seen corresponding path program 41 times [2021-06-01 17:32:43,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:43,684 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778765853] [2021-06-01 17:32:43,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:43,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:43,777 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:43,777 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778765853] [2021-06-01 17:32:43,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778765853] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:43,777 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:43,777 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:43,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60457278] [2021-06-01 17:32:43,777 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:43,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:43,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:43,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:43,778 INFO L87 Difference]: Start difference. First operand 1883 states and 7663 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:43,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:43,847 INFO L93 Difference]: Finished difference Result 4048 states and 15454 transitions. [2021-06-01 17:32:43,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:43,848 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:43,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:43,855 INFO L225 Difference]: With dead ends: 4048 [2021-06-01 17:32:43,856 INFO L226 Difference]: Without dead ends: 3763 [2021-06-01 17:32:43,856 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:43,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3763 states. [2021-06-01 17:32:43,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3763 to 1911. [2021-06-01 17:32:43,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1911 states, 1910 states have (on average 4.058115183246073) internal successors, (7751), 1910 states have internal predecessors, (7751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:43,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1911 states to 1911 states and 7751 transitions. [2021-06-01 17:32:43,909 INFO L78 Accepts]: Start accepts. Automaton has 1911 states and 7751 transitions. Word has length 25 [2021-06-01 17:32:43,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:43,910 INFO L482 AbstractCegarLoop]: Abstraction has 1911 states and 7751 transitions. [2021-06-01 17:32:43,910 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:43,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1911 states and 7751 transitions. [2021-06-01 17:32:43,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:43,912 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:43,912 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:43,912 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-06-01 17:32:43,912 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:43,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:43,913 INFO L82 PathProgramCache]: Analyzing trace with hash -710547975, now seen corresponding path program 42 times [2021-06-01 17:32:43,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:43,913 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392090941] [2021-06-01 17:32:43,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:43,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:44,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:44,010 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:44,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392090941] [2021-06-01 17:32:44,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392090941] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:44,010 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:44,010 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:44,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681638736] [2021-06-01 17:32:44,010 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:44,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:44,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:44,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:44,011 INFO L87 Difference]: Start difference. First operand 1911 states and 7751 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:44,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:44,098 INFO L93 Difference]: Finished difference Result 4010 states and 15273 transitions. [2021-06-01 17:32:44,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:44,098 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:44,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:44,108 INFO L225 Difference]: With dead ends: 4010 [2021-06-01 17:32:44,108 INFO L226 Difference]: Without dead ends: 3727 [2021-06-01 17:32:44,108 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:44,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3727 states. [2021-06-01 17:32:44,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3727 to 1875. [2021-06-01 17:32:44,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1875 states, 1874 states have (on average 4.076307363927428) internal successors, (7639), 1874 states have internal predecessors, (7639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:44,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1875 states to 1875 states and 7639 transitions. [2021-06-01 17:32:44,174 INFO L78 Accepts]: Start accepts. Automaton has 1875 states and 7639 transitions. Word has length 25 [2021-06-01 17:32:44,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:44,174 INFO L482 AbstractCegarLoop]: Abstraction has 1875 states and 7639 transitions. [2021-06-01 17:32:44,174 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:44,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1875 states and 7639 transitions. [2021-06-01 17:32:44,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:44,178 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:44,178 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:44,178 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-06-01 17:32:44,178 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:44,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:44,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1586809853, now seen corresponding path program 43 times [2021-06-01 17:32:44,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:44,179 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218328193] [2021-06-01 17:32:44,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:44,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:44,278 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:44,278 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218328193] [2021-06-01 17:32:44,278 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218328193] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:44,278 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:44,278 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:44,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150031182] [2021-06-01 17:32:44,279 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:44,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:44,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:44,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:44,280 INFO L87 Difference]: Start difference. First operand 1875 states and 7639 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:44,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:44,368 INFO L93 Difference]: Finished difference Result 4220 states and 16140 transitions. [2021-06-01 17:32:44,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:44,369 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:44,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:44,379 INFO L225 Difference]: With dead ends: 4220 [2021-06-01 17:32:44,379 INFO L226 Difference]: Without dead ends: 3935 [2021-06-01 17:32:44,379 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:44,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3935 states. [2021-06-01 17:32:44,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3935 to 1933. [2021-06-01 17:32:44,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1933 states, 1932 states have (on average 4.066252587991719) internal successors, (7856), 1932 states have internal predecessors, (7856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:44,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 7856 transitions. [2021-06-01 17:32:44,434 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 7856 transitions. Word has length 25 [2021-06-01 17:32:44,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:44,434 INFO L482 AbstractCegarLoop]: Abstraction has 1933 states and 7856 transitions. [2021-06-01 17:32:44,434 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:44,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 7856 transitions. [2021-06-01 17:32:44,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:44,437 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:44,437 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:44,437 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-06-01 17:32:44,437 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:44,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:44,438 INFO L82 PathProgramCache]: Analyzing trace with hash 194665307, now seen corresponding path program 44 times [2021-06-01 17:32:44,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:44,438 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492731511] [2021-06-01 17:32:44,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:44,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:44,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:44,538 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:44,538 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492731511] [2021-06-01 17:32:44,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492731511] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:44,538 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:44,538 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:44,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046008993] [2021-06-01 17:32:44,539 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:44,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:44,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:44,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:44,539 INFO L87 Difference]: Start difference. First operand 1933 states and 7856 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:44,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:44,622 INFO L93 Difference]: Finished difference Result 4182 states and 15959 transitions. [2021-06-01 17:32:44,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:44,623 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:44,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:44,633 INFO L225 Difference]: With dead ends: 4182 [2021-06-01 17:32:44,633 INFO L226 Difference]: Without dead ends: 3907 [2021-06-01 17:32:44,633 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:44,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3907 states. [2021-06-01 17:32:44,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3907 to 1905. [2021-06-01 17:32:44,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1905 states, 1904 states have (on average 4.072478991596639) internal successors, (7754), 1904 states have internal predecessors, (7754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:44,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 7754 transitions. [2021-06-01 17:32:44,701 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 7754 transitions. Word has length 25 [2021-06-01 17:32:44,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:44,701 INFO L482 AbstractCegarLoop]: Abstraction has 1905 states and 7754 transitions. [2021-06-01 17:32:44,701 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:44,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 7754 transitions. [2021-06-01 17:32:44,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:44,705 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:44,705 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:44,705 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-06-01 17:32:44,705 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:44,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:44,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1503508261, now seen corresponding path program 45 times [2021-06-01 17:32:44,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:44,705 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003581110] [2021-06-01 17:32:44,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:44,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:44,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:44,806 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:44,806 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003581110] [2021-06-01 17:32:44,806 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003581110] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:44,806 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:44,806 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:44,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359707342] [2021-06-01 17:32:44,806 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:44,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:44,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:44,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:44,807 INFO L87 Difference]: Start difference. First operand 1905 states and 7754 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:44,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:44,886 INFO L93 Difference]: Finished difference Result 4342 states and 16591 transitions. [2021-06-01 17:32:44,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:44,886 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:44,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:44,894 INFO L225 Difference]: With dead ends: 4342 [2021-06-01 17:32:44,894 INFO L226 Difference]: Without dead ends: 4057 [2021-06-01 17:32:44,895 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 116.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:44,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4057 states. [2021-06-01 17:32:44,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4057 to 1984. [2021-06-01 17:32:44,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1984 states, 1983 states have (on average 4.044881492687847) internal successors, (8021), 1983 states have internal predecessors, (8021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:44,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1984 states to 1984 states and 8021 transitions. [2021-06-01 17:32:44,945 INFO L78 Accepts]: Start accepts. Automaton has 1984 states and 8021 transitions. Word has length 25 [2021-06-01 17:32:44,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:44,945 INFO L482 AbstractCegarLoop]: Abstraction has 1984 states and 8021 transitions. [2021-06-01 17:32:44,945 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:44,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1984 states and 8021 transitions. [2021-06-01 17:32:44,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:44,948 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:44,948 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:44,948 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-06-01 17:32:44,948 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:44,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:44,949 INFO L82 PathProgramCache]: Analyzing trace with hash -771425957, now seen corresponding path program 46 times [2021-06-01 17:32:44,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:44,949 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178379770] [2021-06-01 17:32:44,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:45,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:45,047 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:45,047 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178379770] [2021-06-01 17:32:45,047 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178379770] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:45,047 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:45,047 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:45,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815046330] [2021-06-01 17:32:45,047 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:45,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:45,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:45,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:45,048 INFO L87 Difference]: Start difference. First operand 1984 states and 8021 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:45,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:45,120 INFO L93 Difference]: Finished difference Result 4375 states and 16658 transitions. [2021-06-01 17:32:45,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:45,120 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:45,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:45,130 INFO L225 Difference]: With dead ends: 4375 [2021-06-01 17:32:45,130 INFO L226 Difference]: Without dead ends: 3978 [2021-06-01 17:32:45,130 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:45,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3978 states. [2021-06-01 17:32:45,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3978 to 1905. [2021-06-01 17:32:45,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1905 states, 1904 states have (on average 4.05672268907563) internal successors, (7724), 1904 states have internal predecessors, (7724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:45,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 7724 transitions. [2021-06-01 17:32:45,200 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 7724 transitions. Word has length 25 [2021-06-01 17:32:45,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:45,200 INFO L482 AbstractCegarLoop]: Abstraction has 1905 states and 7724 transitions. [2021-06-01 17:32:45,200 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:45,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 7724 transitions. [2021-06-01 17:32:45,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:45,204 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:45,204 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:45,204 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-06-01 17:32:45,204 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:45,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:45,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1139250887, now seen corresponding path program 47 times [2021-06-01 17:32:45,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:45,205 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25333970] [2021-06-01 17:32:45,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:45,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:45,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:45,311 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:45,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25333970] [2021-06-01 17:32:45,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25333970] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:45,311 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:45,311 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:45,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849806606] [2021-06-01 17:32:45,312 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:45,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:45,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:45,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:45,312 INFO L87 Difference]: Start difference. First operand 1905 states and 7724 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:45,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:45,400 INFO L93 Difference]: Finished difference Result 4231 states and 16121 transitions. [2021-06-01 17:32:45,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:45,401 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:45,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:45,411 INFO L225 Difference]: With dead ends: 4231 [2021-06-01 17:32:45,411 INFO L226 Difference]: Without dead ends: 3984 [2021-06-01 17:32:45,411 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 123.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:45,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3984 states. [2021-06-01 17:32:45,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3984 to 1949. [2021-06-01 17:32:45,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1949 states, 1948 states have (on average 4.04312114989733) internal successors, (7876), 1948 states have internal predecessors, (7876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:45,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1949 states to 1949 states and 7876 transitions. [2021-06-01 17:32:45,473 INFO L78 Accepts]: Start accepts. Automaton has 1949 states and 7876 transitions. Word has length 25 [2021-06-01 17:32:45,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:45,473 INFO L482 AbstractCegarLoop]: Abstraction has 1949 states and 7876 transitions. [2021-06-01 17:32:45,474 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:45,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1949 states and 7876 transitions. [2021-06-01 17:32:45,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:45,477 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:45,477 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:45,477 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-06-01 17:32:45,477 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:45,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:45,477 INFO L82 PathProgramCache]: Analyzing trace with hash 2086197403, now seen corresponding path program 48 times [2021-06-01 17:32:45,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:45,477 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679620633] [2021-06-01 17:32:45,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:45,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:45,585 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:45,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679620633] [2021-06-01 17:32:45,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679620633] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:45,586 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:45,586 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:45,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027797053] [2021-06-01 17:32:45,586 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:45,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:45,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:45,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:45,586 INFO L87 Difference]: Start difference. First operand 1949 states and 7876 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:45,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:45,641 INFO L93 Difference]: Finished difference Result 4302 states and 16360 transitions. [2021-06-01 17:32:45,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:45,641 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:45,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:45,649 INFO L225 Difference]: With dead ends: 4302 [2021-06-01 17:32:45,649 INFO L226 Difference]: Without dead ends: 3898 [2021-06-01 17:32:45,649 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:45,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3898 states. [2021-06-01 17:32:45,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3898 to 1863. [2021-06-01 17:32:45,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1862 states have (on average 4.082169709989259) internal successors, (7601), 1862 states have internal predecessors, (7601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:45,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 7601 transitions. [2021-06-01 17:32:45,702 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 7601 transitions. Word has length 25 [2021-06-01 17:32:45,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:45,702 INFO L482 AbstractCegarLoop]: Abstraction has 1863 states and 7601 transitions. [2021-06-01 17:32:45,702 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:45,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 7601 transitions. [2021-06-01 17:32:45,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:45,706 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:45,706 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:45,706 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-06-01 17:32:45,706 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:45,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:45,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1940815897, now seen corresponding path program 49 times [2021-06-01 17:32:45,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:45,706 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532658541] [2021-06-01 17:32:45,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:45,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:45,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:45,814 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:45,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532658541] [2021-06-01 17:32:45,814 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532658541] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:45,814 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:45,814 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:45,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128450273] [2021-06-01 17:32:45,814 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:45,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:45,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:45,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:45,815 INFO L87 Difference]: Start difference. First operand 1863 states and 7601 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:45,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:45,895 INFO L93 Difference]: Finished difference Result 4165 states and 15971 transitions. [2021-06-01 17:32:45,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:45,909 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:45,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:45,919 INFO L225 Difference]: With dead ends: 4165 [2021-06-01 17:32:45,919 INFO L226 Difference]: Without dead ends: 3918 [2021-06-01 17:32:45,920 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:45,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3918 states. [2021-06-01 17:32:45,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3918 to 1937. [2021-06-01 17:32:45,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1937 states, 1936 states have (on average 4.077479338842975) internal successors, (7894), 1936 states have internal predecessors, (7894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:45,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1937 states to 1937 states and 7894 transitions. [2021-06-01 17:32:45,983 INFO L78 Accepts]: Start accepts. Automaton has 1937 states and 7894 transitions. Word has length 25 [2021-06-01 17:32:45,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:45,984 INFO L482 AbstractCegarLoop]: Abstraction has 1937 states and 7894 transitions. [2021-06-01 17:32:45,984 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:45,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1937 states and 7894 transitions. [2021-06-01 17:32:45,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:45,987 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:45,987 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:45,987 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-06-01 17:32:45,987 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:45,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:45,988 INFO L82 PathProgramCache]: Analyzing trace with hash 308868731, now seen corresponding path program 50 times [2021-06-01 17:32:45,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:45,988 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913072738] [2021-06-01 17:32:45,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:45,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:46,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:46,100 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:46,100 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913072738] [2021-06-01 17:32:46,100 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913072738] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:46,100 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:46,100 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:46,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296460646] [2021-06-01 17:32:46,100 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:46,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:46,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:46,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:46,101 INFO L87 Difference]: Start difference. First operand 1937 states and 7894 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:46,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:46,164 INFO L93 Difference]: Finished difference Result 4236 states and 16210 transitions. [2021-06-01 17:32:46,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:46,165 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:46,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:46,172 INFO L225 Difference]: With dead ends: 4236 [2021-06-01 17:32:46,173 INFO L226 Difference]: Without dead ends: 3874 [2021-06-01 17:32:46,173 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:46,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3874 states. [2021-06-01 17:32:46,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3874 to 1893. [2021-06-01 17:32:46,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1893 states, 1892 states have (on average 4.080338266384778) internal successors, (7720), 1892 states have internal predecessors, (7720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:46,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 7720 transitions. [2021-06-01 17:32:46,221 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 7720 transitions. Word has length 25 [2021-06-01 17:32:46,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:46,222 INFO L482 AbstractCegarLoop]: Abstraction has 1893 states and 7720 transitions. [2021-06-01 17:32:46,222 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:46,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 7720 transitions. [2021-06-01 17:32:46,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:46,225 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:46,225 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:46,225 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-06-01 17:32:46,226 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:46,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:46,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1694930983, now seen corresponding path program 51 times [2021-06-01 17:32:46,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:46,226 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628976365] [2021-06-01 17:32:46,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:46,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:46,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:46,342 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:46,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628976365] [2021-06-01 17:32:46,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628976365] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:46,342 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:46,342 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:46,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486988887] [2021-06-01 17:32:46,343 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:46,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:46,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:46,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:46,343 INFO L87 Difference]: Start difference. First operand 1893 states and 7720 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:46,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:46,412 INFO L93 Difference]: Finished difference Result 4114 states and 15766 transitions. [2021-06-01 17:32:46,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:46,412 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:46,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:46,420 INFO L225 Difference]: With dead ends: 4114 [2021-06-01 17:32:46,420 INFO L226 Difference]: Without dead ends: 3867 [2021-06-01 17:32:46,420 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:46,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3867 states. [2021-06-01 17:32:46,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3867 to 1921. [2021-06-01 17:32:46,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1921 states, 1920 states have (on average 4.066666666666666) internal successors, (7808), 1920 states have internal predecessors, (7808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:46,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1921 states to 1921 states and 7808 transitions. [2021-06-01 17:32:46,470 INFO L78 Accepts]: Start accepts. Automaton has 1921 states and 7808 transitions. Word has length 25 [2021-06-01 17:32:46,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:46,470 INFO L482 AbstractCegarLoop]: Abstraction has 1921 states and 7808 transitions. [2021-06-01 17:32:46,470 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:46,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1921 states and 7808 transitions. [2021-06-01 17:32:46,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:46,473 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:46,473 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:46,474 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-06-01 17:32:46,474 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:46,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:46,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1031107771, now seen corresponding path program 52 times [2021-06-01 17:32:46,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:46,474 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438931427] [2021-06-01 17:32:46,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:46,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:46,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:46,594 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:46,594 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438931427] [2021-06-01 17:32:46,594 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438931427] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:46,594 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:46,595 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:46,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015492400] [2021-06-01 17:32:46,595 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:46,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:46,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:46,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:46,596 INFO L87 Difference]: Start difference. First operand 1921 states and 7808 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:46,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:46,675 INFO L93 Difference]: Finished difference Result 4150 states and 15886 transitions. [2021-06-01 17:32:46,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:46,675 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:46,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:46,683 INFO L225 Difference]: With dead ends: 4150 [2021-06-01 17:32:46,683 INFO L226 Difference]: Without dead ends: 3839 [2021-06-01 17:32:46,684 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 133.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:46,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3839 states. [2021-06-01 17:32:46,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3839 to 1893. [2021-06-01 17:32:46,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1893 states, 1892 states have (on average 4.072938689217759) internal successors, (7706), 1892 states have internal predecessors, (7706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:46,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 7706 transitions. [2021-06-01 17:32:46,735 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 7706 transitions. Word has length 25 [2021-06-01 17:32:46,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:46,735 INFO L482 AbstractCegarLoop]: Abstraction has 1893 states and 7706 transitions. [2021-06-01 17:32:46,735 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:46,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 7706 transitions. [2021-06-01 17:32:46,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:46,739 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:46,739 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:46,739 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-06-01 17:32:46,739 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:46,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:46,739 INFO L82 PathProgramCache]: Analyzing trace with hash 392944285, now seen corresponding path program 53 times [2021-06-01 17:32:46,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:46,739 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430095671] [2021-06-01 17:32:46,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:46,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:46,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:46,838 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:46,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430095671] [2021-06-01 17:32:46,838 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430095671] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:46,838 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:46,838 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:46,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211005929] [2021-06-01 17:32:46,839 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:46,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:46,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:46,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:46,839 INFO L87 Difference]: Start difference. First operand 1893 states and 7706 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:46,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:46,936 INFO L93 Difference]: Finished difference Result 4255 states and 16314 transitions. [2021-06-01 17:32:46,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:46,936 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:46,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:46,944 INFO L225 Difference]: With dead ends: 4255 [2021-06-01 17:32:46,944 INFO L226 Difference]: Without dead ends: 3972 [2021-06-01 17:32:46,945 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:46,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3972 states. [2021-06-01 17:32:46,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3972 to 1955. [2021-06-01 17:32:46,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1955 states, 1954 states have (on average 4.054759467758444) internal successors, (7923), 1954 states have internal predecessors, (7923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:47,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1955 states to 1955 states and 7923 transitions. [2021-06-01 17:32:47,003 INFO L78 Accepts]: Start accepts. Automaton has 1955 states and 7923 transitions. Word has length 25 [2021-06-01 17:32:47,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:47,003 INFO L482 AbstractCegarLoop]: Abstraction has 1955 states and 7923 transitions. [2021-06-01 17:32:47,004 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:47,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1955 states and 7923 transitions. [2021-06-01 17:32:47,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:47,006 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:47,006 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:47,006 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-06-01 17:32:47,006 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:47,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:47,007 INFO L82 PathProgramCache]: Analyzing trace with hash 39804795, now seen corresponding path program 54 times [2021-06-01 17:32:47,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:47,007 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762485031] [2021-06-01 17:32:47,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:47,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:47,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:47,121 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:47,121 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762485031] [2021-06-01 17:32:47,121 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762485031] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:47,121 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:47,121 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:47,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747768967] [2021-06-01 17:32:47,121 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:47,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:47,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:47,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:47,122 INFO L87 Difference]: Start difference. First operand 1955 states and 7923 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:47,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:47,212 INFO L93 Difference]: Finished difference Result 4290 states and 16387 transitions. [2021-06-01 17:32:47,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:47,212 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:47,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:47,222 INFO L225 Difference]: With dead ends: 4290 [2021-06-01 17:32:47,222 INFO L226 Difference]: Without dead ends: 3888 [2021-06-01 17:32:47,223 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 117.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:47,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3888 states. [2021-06-01 17:32:47,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3888 to 1871. [2021-06-01 17:32:47,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1871 states, 1870 states have (on average 4.081818181818182) internal successors, (7633), 1870 states have internal predecessors, (7633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:47,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1871 states to 1871 states and 7633 transitions. [2021-06-01 17:32:47,291 INFO L78 Accepts]: Start accepts. Automaton has 1871 states and 7633 transitions. Word has length 25 [2021-06-01 17:32:47,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:47,291 INFO L482 AbstractCegarLoop]: Abstraction has 1871 states and 7633 transitions. [2021-06-01 17:32:47,291 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:47,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1871 states and 7633 transitions. [2021-06-01 17:32:47,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:47,295 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:47,295 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:47,295 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-06-01 17:32:47,295 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:47,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:47,295 INFO L82 PathProgramCache]: Analyzing trace with hash -644549637, now seen corresponding path program 55 times [2021-06-01 17:32:47,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:47,296 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587674843] [2021-06-01 17:32:47,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:47,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:47,415 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:47,415 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587674843] [2021-06-01 17:32:47,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587674843] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:47,415 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:47,415 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:47,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497348866] [2021-06-01 17:32:47,416 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:47,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:47,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:47,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:47,416 INFO L87 Difference]: Start difference. First operand 1871 states and 7633 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:47,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:47,500 INFO L93 Difference]: Finished difference Result 4093 states and 15651 transitions. [2021-06-01 17:32:47,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:47,501 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:47,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:47,511 INFO L225 Difference]: With dead ends: 4093 [2021-06-01 17:32:47,511 INFO L226 Difference]: Without dead ends: 3846 [2021-06-01 17:32:47,511 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 120.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:47,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3846 states. [2021-06-01 17:32:47,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3846 to 1931. [2021-06-01 17:32:47,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1931 states, 1930 states have (on average 4.070984455958549) internal successors, (7857), 1930 states have internal predecessors, (7857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:47,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1931 states to 1931 states and 7857 transitions. [2021-06-01 17:32:47,578 INFO L78 Accepts]: Start accepts. Automaton has 1931 states and 7857 transitions. Word has length 25 [2021-06-01 17:32:47,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:47,578 INFO L482 AbstractCegarLoop]: Abstraction has 1931 states and 7857 transitions. [2021-06-01 17:32:47,578 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:47,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1931 states and 7857 transitions. [2021-06-01 17:32:47,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:47,581 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:47,581 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:47,581 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-06-01 17:32:47,581 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:47,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:47,581 INFO L82 PathProgramCache]: Analyzing trace with hash 2018470493, now seen corresponding path program 56 times [2021-06-01 17:32:47,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:47,581 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448165767] [2021-06-01 17:32:47,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:47,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:47,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:47,696 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:47,696 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448165767] [2021-06-01 17:32:47,696 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448165767] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:47,696 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:47,696 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:47,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276261190] [2021-06-01 17:32:47,697 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:47,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:47,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:47,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:47,697 INFO L87 Difference]: Start difference. First operand 1931 states and 7857 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:47,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:47,785 INFO L93 Difference]: Finished difference Result 4164 states and 15890 transitions. [2021-06-01 17:32:47,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:47,785 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:47,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:47,795 INFO L225 Difference]: With dead ends: 4164 [2021-06-01 17:32:47,795 INFO L226 Difference]: Without dead ends: 3802 [2021-06-01 17:32:47,795 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:47,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3802 states. [2021-06-01 17:32:47,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3802 to 1887. [2021-06-01 17:32:47,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1887 states, 1886 states have (on average 4.076882290562036) internal successors, (7689), 1886 states have internal predecessors, (7689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:47,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 7689 transitions. [2021-06-01 17:32:47,846 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 7689 transitions. Word has length 25 [2021-06-01 17:32:47,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:47,846 INFO L482 AbstractCegarLoop]: Abstraction has 1887 states and 7689 transitions. [2021-06-01 17:32:47,846 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:47,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 7689 transitions. [2021-06-01 17:32:47,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:47,848 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:47,848 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:47,848 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-06-01 17:32:47,848 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:47,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:47,849 INFO L82 PathProgramCache]: Analyzing trace with hash -317417511, now seen corresponding path program 57 times [2021-06-01 17:32:47,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:47,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122155227] [2021-06-01 17:32:47,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:47,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:47,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:47,956 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:47,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122155227] [2021-06-01 17:32:47,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122155227] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:47,956 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:47,956 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:47,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303328397] [2021-06-01 17:32:47,957 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:47,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:47,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:47,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:47,957 INFO L87 Difference]: Start difference. First operand 1887 states and 7689 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:48,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:48,028 INFO L93 Difference]: Finished difference Result 3994 states and 15252 transitions. [2021-06-01 17:32:48,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:48,028 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:48,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:48,038 INFO L225 Difference]: With dead ends: 3994 [2021-06-01 17:32:48,038 INFO L226 Difference]: Without dead ends: 3747 [2021-06-01 17:32:48,039 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:48,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3747 states. [2021-06-01 17:32:48,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3747 to 1903. [2021-06-01 17:32:48,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1903 states, 1902 states have (on average 4.0678233438485805) internal successors, (7737), 1902 states have internal predecessors, (7737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:48,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1903 states to 1903 states and 7737 transitions. [2021-06-01 17:32:48,106 INFO L78 Accepts]: Start accepts. Automaton has 1903 states and 7737 transitions. Word has length 25 [2021-06-01 17:32:48,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:48,106 INFO L482 AbstractCegarLoop]: Abstraction has 1903 states and 7737 transitions. [2021-06-01 17:32:48,106 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:48,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1903 states and 7737 transitions. [2021-06-01 17:32:48,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:48,110 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:48,110 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:48,110 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-06-01 17:32:48,110 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:48,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:48,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1865339845, now seen corresponding path program 58 times [2021-06-01 17:32:48,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:48,111 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276247233] [2021-06-01 17:32:48,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:48,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:48,217 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:48,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276247233] [2021-06-01 17:32:48,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276247233] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:48,217 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:48,217 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:48,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630561002] [2021-06-01 17:32:48,218 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:48,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:48,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:48,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:48,218 INFO L87 Difference]: Start difference. First operand 1903 states and 7737 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:48,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:48,330 INFO L93 Difference]: Finished difference Result 3994 states and 15236 transitions. [2021-06-01 17:32:48,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:48,330 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:48,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:48,340 INFO L225 Difference]: With dead ends: 3994 [2021-06-01 17:32:48,340 INFO L226 Difference]: Without dead ends: 3731 [2021-06-01 17:32:48,340 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:48,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3731 states. [2021-06-01 17:32:48,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3731 to 1887. [2021-06-01 17:32:48,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1887 states, 1886 states have (on average 4.072640509013786) internal successors, (7681), 1886 states have internal predecessors, (7681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:48,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 7681 transitions. [2021-06-01 17:32:48,411 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 7681 transitions. Word has length 25 [2021-06-01 17:32:48,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:48,411 INFO L482 AbstractCegarLoop]: Abstraction has 1887 states and 7681 transitions. [2021-06-01 17:32:48,411 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:48,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 7681 transitions. [2021-06-01 17:32:48,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:48,415 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:48,415 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:48,415 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-06-01 17:32:48,416 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:48,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:48,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1791463965, now seen corresponding path program 59 times [2021-06-01 17:32:48,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:48,416 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853815543] [2021-06-01 17:32:48,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:48,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:48,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:48,538 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:48,538 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853815543] [2021-06-01 17:32:48,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853815543] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:48,538 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:48,538 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:48,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13260630] [2021-06-01 17:32:48,538 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:48,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:48,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:48,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:48,539 INFO L87 Difference]: Start difference. First operand 1887 states and 7681 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:48,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:48,633 INFO L93 Difference]: Finished difference Result 4093 states and 15627 transitions. [2021-06-01 17:32:48,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:48,633 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:48,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:48,641 INFO L225 Difference]: With dead ends: 4093 [2021-06-01 17:32:48,641 INFO L226 Difference]: Without dead ends: 3846 [2021-06-01 17:32:48,642 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 132.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:48,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3846 states. [2021-06-01 17:32:48,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3846 to 1931. [2021-06-01 17:32:48,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1931 states, 1930 states have (on average 4.058549222797928) internal successors, (7833), 1930 states have internal predecessors, (7833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:48,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1931 states to 1931 states and 7833 transitions. [2021-06-01 17:32:48,694 INFO L78 Accepts]: Start accepts. Automaton has 1931 states and 7833 transitions. Word has length 25 [2021-06-01 17:32:48,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:48,694 INFO L482 AbstractCegarLoop]: Abstraction has 1931 states and 7833 transitions. [2021-06-01 17:32:48,694 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:48,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1931 states and 7833 transitions. [2021-06-01 17:32:48,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:48,697 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:48,697 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:48,697 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-06-01 17:32:48,697 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:48,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:48,697 INFO L82 PathProgramCache]: Analyzing trace with hash 787132027, now seen corresponding path program 60 times [2021-06-01 17:32:48,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:48,697 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509239888] [2021-06-01 17:32:48,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:48,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:48,820 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:48,820 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509239888] [2021-06-01 17:32:48,821 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509239888] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:48,821 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:48,821 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:48,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073247787] [2021-06-01 17:32:48,821 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:48,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:48,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:48,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:48,822 INFO L87 Difference]: Start difference. First operand 1931 states and 7833 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:48,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:48,907 INFO L93 Difference]: Finished difference Result 4164 states and 15866 transitions. [2021-06-01 17:32:48,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:48,908 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:48,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:48,918 INFO L225 Difference]: With dead ends: 4164 [2021-06-01 17:32:48,918 INFO L226 Difference]: Without dead ends: 3786 [2021-06-01 17:32:48,918 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 125.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:48,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2021-06-01 17:32:48,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 1871. [2021-06-01 17:32:48,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1871 states, 1870 states have (on average 4.077540106951871) internal successors, (7625), 1870 states have internal predecessors, (7625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:48,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1871 states to 1871 states and 7625 transitions. [2021-06-01 17:32:48,986 INFO L78 Accepts]: Start accepts. Automaton has 1871 states and 7625 transitions. Word has length 25 [2021-06-01 17:32:48,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:48,986 INFO L482 AbstractCegarLoop]: Abstraction has 1871 states and 7625 transitions. [2021-06-01 17:32:48,987 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:48,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1871 states and 7625 transitions. [2021-06-01 17:32:48,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:48,991 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:48,991 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:48,991 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-06-01 17:32:48,991 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:48,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:48,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1825079399, now seen corresponding path program 61 times [2021-06-01 17:32:48,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:48,992 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492525920] [2021-06-01 17:32:48,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:49,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:49,104 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:49,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492525920] [2021-06-01 17:32:49,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492525920] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:49,104 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:49,105 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:49,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78249225] [2021-06-01 17:32:49,105 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:49,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:49,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:49,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:49,105 INFO L87 Difference]: Start difference. First operand 1871 states and 7625 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:49,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:49,170 INFO L93 Difference]: Finished difference Result 3967 states and 15177 transitions. [2021-06-01 17:32:49,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:49,171 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:49,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:49,178 INFO L225 Difference]: With dead ends: 3967 [2021-06-01 17:32:49,178 INFO L226 Difference]: Without dead ends: 3720 [2021-06-01 17:32:49,178 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:49,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3720 states. [2021-06-01 17:32:49,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3720 to 1907. [2021-06-01 17:32:49,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1907 states, 1906 states have (on average 4.065582371458552) internal successors, (7749), 1906 states have internal predecessors, (7749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:49,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 7749 transitions. [2021-06-01 17:32:49,226 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 7749 transitions. Word has length 25 [2021-06-01 17:32:49,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:49,226 INFO L482 AbstractCegarLoop]: Abstraction has 1907 states and 7749 transitions. [2021-06-01 17:32:49,226 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:49,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 7749 transitions. [2021-06-01 17:32:49,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:49,229 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:49,229 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:49,229 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-06-01 17:32:49,229 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:49,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:49,229 INFO L82 PathProgramCache]: Analyzing trace with hash 900959355, now seen corresponding path program 62 times [2021-06-01 17:32:49,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:49,229 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873216776] [2021-06-01 17:32:49,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:49,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:49,326 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:49,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873216776] [2021-06-01 17:32:49,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873216776] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:49,326 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:49,326 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:49,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588902143] [2021-06-01 17:32:49,326 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:49,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:49,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:49,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:49,327 INFO L87 Difference]: Start difference. First operand 1907 states and 7749 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:49,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:49,394 INFO L93 Difference]: Finished difference Result 4003 states and 15297 transitions. [2021-06-01 17:32:49,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:49,394 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:49,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:49,402 INFO L225 Difference]: With dead ends: 4003 [2021-06-01 17:32:49,402 INFO L226 Difference]: Without dead ends: 3692 [2021-06-01 17:32:49,402 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:49,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3692 states. [2021-06-01 17:32:49,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3692 to 1879. [2021-06-01 17:32:49,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1879 states, 1878 states have (on average 4.075079872204473) internal successors, (7653), 1878 states have internal predecessors, (7653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:49,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1879 states to 1879 states and 7653 transitions. [2021-06-01 17:32:49,449 INFO L78 Accepts]: Start accepts. Automaton has 1879 states and 7653 transitions. Word has length 25 [2021-06-01 17:32:49,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:49,449 INFO L482 AbstractCegarLoop]: Abstraction has 1879 states and 7653 transitions. [2021-06-01 17:32:49,449 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:49,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1879 states and 7653 transitions. [2021-06-01 17:32:49,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:49,451 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:49,451 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:49,451 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-06-01 17:32:49,452 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:49,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:49,452 INFO L82 PathProgramCache]: Analyzing trace with hash -744016773, now seen corresponding path program 63 times [2021-06-01 17:32:49,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:49,452 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335636532] [2021-06-01 17:32:49,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:49,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:49,544 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:49,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335636532] [2021-06-01 17:32:49,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335636532] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:49,545 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:49,545 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:49,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322513410] [2021-06-01 17:32:49,545 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:49,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:49,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:49,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:49,546 INFO L87 Difference]: Start difference. First operand 1879 states and 7653 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:49,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:49,610 INFO L93 Difference]: Finished difference Result 3919 states and 14969 transitions. [2021-06-01 17:32:49,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:49,610 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:49,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:49,619 INFO L225 Difference]: With dead ends: 3919 [2021-06-01 17:32:49,619 INFO L226 Difference]: Without dead ends: 3672 [2021-06-01 17:32:49,620 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:49,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3672 states. [2021-06-01 17:32:49,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3672 to 1895. [2021-06-01 17:32:49,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1895 states, 1894 states have (on average 4.065997888067582) internal successors, (7701), 1894 states have internal predecessors, (7701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:49,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 7701 transitions. [2021-06-01 17:32:49,687 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 7701 transitions. Word has length 25 [2021-06-01 17:32:49,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:49,688 INFO L482 AbstractCegarLoop]: Abstraction has 1895 states and 7701 transitions. [2021-06-01 17:32:49,688 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:49,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 7701 transitions. [2021-06-01 17:32:49,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:49,692 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:49,692 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:49,692 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-06-01 17:32:49,692 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:49,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:49,692 INFO L82 PathProgramCache]: Analyzing trace with hash 285287419, now seen corresponding path program 64 times [2021-06-01 17:32:49,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:49,692 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167769788] [2021-06-01 17:32:49,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:49,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:49,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:49,786 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:49,786 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167769788] [2021-06-01 17:32:49,786 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167769788] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:49,786 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:49,786 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:49,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455953471] [2021-06-01 17:32:49,786 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:49,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:49,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:49,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:49,787 INFO L87 Difference]: Start difference. First operand 1895 states and 7701 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:49,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:49,860 INFO L93 Difference]: Finished difference Result 3919 states and 14953 transitions. [2021-06-01 17:32:49,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:49,861 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:49,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:49,869 INFO L225 Difference]: With dead ends: 3919 [2021-06-01 17:32:49,869 INFO L226 Difference]: Without dead ends: 3656 [2021-06-01 17:32:49,869 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:49,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3656 states. [2021-06-01 17:32:49,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3656 to 1879. [2021-06-01 17:32:49,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1879 states, 1878 states have (on average 4.070820021299254) internal successors, (7645), 1878 states have internal predecessors, (7645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:49,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1879 states to 1879 states and 7645 transitions. [2021-06-01 17:32:49,916 INFO L78 Accepts]: Start accepts. Automaton has 1879 states and 7645 transitions. Word has length 25 [2021-06-01 17:32:49,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:49,916 INFO L482 AbstractCegarLoop]: Abstraction has 1879 states and 7645 transitions. [2021-06-01 17:32:49,916 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:49,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1879 states and 7645 transitions. [2021-06-01 17:32:49,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:49,919 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:49,919 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:49,919 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-06-01 17:32:49,919 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:49,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:49,919 INFO L82 PathProgramCache]: Analyzing trace with hash -593719203, now seen corresponding path program 65 times [2021-06-01 17:32:49,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:49,919 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23690060] [2021-06-01 17:32:49,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:50,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:50,021 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:50,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23690060] [2021-06-01 17:32:50,021 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23690060] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:50,022 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:50,022 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:50,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977737291] [2021-06-01 17:32:50,022 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:50,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:50,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:50,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:50,022 INFO L87 Difference]: Start difference. First operand 1879 states and 7645 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:50,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:50,102 INFO L93 Difference]: Finished difference Result 4003 states and 15309 transitions. [2021-06-01 17:32:50,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:50,102 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:50,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:50,112 INFO L225 Difference]: With dead ends: 4003 [2021-06-01 17:32:50,112 INFO L226 Difference]: Without dead ends: 3720 [2021-06-01 17:32:50,112 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:50,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3720 states. [2021-06-01 17:32:50,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3720 to 1907. [2021-06-01 17:32:50,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1907 states, 1906 states have (on average 4.057187827911857) internal successors, (7733), 1906 states have internal predecessors, (7733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:50,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 7733 transitions. [2021-06-01 17:32:50,168 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 7733 transitions. Word has length 25 [2021-06-01 17:32:50,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:50,168 INFO L482 AbstractCegarLoop]: Abstraction has 1907 states and 7733 transitions. [2021-06-01 17:32:50,168 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:50,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 7733 transitions. [2021-06-01 17:32:50,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:50,171 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:50,171 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:50,171 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-06-01 17:32:50,171 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:50,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:50,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1657911099, now seen corresponding path program 66 times [2021-06-01 17:32:50,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:50,171 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796187821] [2021-06-01 17:32:50,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:50,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:50,266 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:50,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796187821] [2021-06-01 17:32:50,266 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796187821] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:50,266 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:50,266 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:50,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352906431] [2021-06-01 17:32:50,266 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:50,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:50,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:50,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:50,267 INFO L87 Difference]: Start difference. First operand 1907 states and 7733 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:50,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:50,349 INFO L93 Difference]: Finished difference Result 3967 states and 15133 transitions. [2021-06-01 17:32:50,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:50,349 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:50,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:50,359 INFO L225 Difference]: With dead ends: 3967 [2021-06-01 17:32:50,360 INFO L226 Difference]: Without dead ends: 3684 [2021-06-01 17:32:50,360 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:50,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3684 states. [2021-06-01 17:32:50,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3684 to 1871. [2021-06-01 17:32:50,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1871 states, 1870 states have (on average 4.075401069518716) internal successors, (7621), 1870 states have internal predecessors, (7621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:50,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1871 states to 1871 states and 7621 transitions. [2021-06-01 17:32:50,427 INFO L78 Accepts]: Start accepts. Automaton has 1871 states and 7621 transitions. Word has length 25 [2021-06-01 17:32:50,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:50,428 INFO L482 AbstractCegarLoop]: Abstraction has 1871 states and 7621 transitions. [2021-06-01 17:32:50,428 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:50,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1871 states and 7621 transitions. [2021-06-01 17:32:50,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:50,431 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:50,431 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:50,431 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-06-01 17:32:50,432 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:50,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:50,432 INFO L82 PathProgramCache]: Analyzing trace with hash 311494079, now seen corresponding path program 67 times [2021-06-01 17:32:50,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:50,432 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810758828] [2021-06-01 17:32:50,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:50,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:50,526 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:50,526 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810758828] [2021-06-01 17:32:50,526 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810758828] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:50,526 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:50,526 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:50,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8386293] [2021-06-01 17:32:50,526 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:50,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:50,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:50,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:50,527 INFO L87 Difference]: Start difference. First operand 1871 states and 7621 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:50,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:50,640 INFO L93 Difference]: Finished difference Result 4150 states and 15916 transitions. [2021-06-01 17:32:50,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:50,641 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:50,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:50,652 INFO L225 Difference]: With dead ends: 4150 [2021-06-01 17:32:50,652 INFO L226 Difference]: Without dead ends: 3867 [2021-06-01 17:32:50,652 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:50,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3867 states. [2021-06-01 17:32:50,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3867 to 1921. [2021-06-01 17:32:50,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1921 states, 1920 states have (on average 4.067708333333333) internal successors, (7810), 1920 states have internal predecessors, (7810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:50,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1921 states to 1921 states and 7810 transitions. [2021-06-01 17:32:50,718 INFO L78 Accepts]: Start accepts. Automaton has 1921 states and 7810 transitions. Word has length 25 [2021-06-01 17:32:50,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:50,718 INFO L482 AbstractCegarLoop]: Abstraction has 1921 states and 7810 transitions. [2021-06-01 17:32:50,718 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:50,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1921 states and 7810 transitions. [2021-06-01 17:32:50,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:50,722 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:50,722 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:50,722 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-06-01 17:32:50,722 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:50,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:50,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1731842915, now seen corresponding path program 68 times [2021-06-01 17:32:50,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:50,723 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640958989] [2021-06-01 17:32:50,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:50,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:50,822 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:50,822 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640958989] [2021-06-01 17:32:50,823 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640958989] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:50,823 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:50,823 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:50,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937150147] [2021-06-01 17:32:50,823 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:50,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:50,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:50,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:50,823 INFO L87 Difference]: Start difference. First operand 1921 states and 7810 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:50,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:50,901 INFO L93 Difference]: Finished difference Result 4114 states and 15740 transitions. [2021-06-01 17:32:50,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:50,901 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:50,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:50,909 INFO L225 Difference]: With dead ends: 4114 [2021-06-01 17:32:50,909 INFO L226 Difference]: Without dead ends: 3839 [2021-06-01 17:32:50,909 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 116.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:50,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3839 states. [2021-06-01 17:32:50,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3839 to 1893. [2021-06-01 17:32:50,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1893 states, 1892 states have (on average 4.07399577167019) internal successors, (7708), 1892 states have internal predecessors, (7708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:50,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 7708 transitions. [2021-06-01 17:32:50,957 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 7708 transitions. Word has length 25 [2021-06-01 17:32:50,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:50,957 INFO L482 AbstractCegarLoop]: Abstraction has 1893 states and 7708 transitions. [2021-06-01 17:32:50,957 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:50,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 7708 transitions. [2021-06-01 17:32:50,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:50,960 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:50,960 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:50,960 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-06-01 17:32:50,960 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:50,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:50,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1516143261, now seen corresponding path program 69 times [2021-06-01 17:32:50,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:50,964 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425283775] [2021-06-01 17:32:50,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:50,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:51,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:51,058 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:51,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425283775] [2021-06-01 17:32:51,058 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425283775] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:51,059 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:51,059 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:51,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145652438] [2021-06-01 17:32:51,059 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:51,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:51,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:51,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:51,059 INFO L87 Difference]: Start difference. First operand 1893 states and 7708 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:51,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:51,137 INFO L93 Difference]: Finished difference Result 4255 states and 16316 transitions. [2021-06-01 17:32:51,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:51,137 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:51,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:51,145 INFO L225 Difference]: With dead ends: 4255 [2021-06-01 17:32:51,145 INFO L226 Difference]: Without dead ends: 3972 [2021-06-01 17:32:51,146 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:51,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3972 states. [2021-06-01 17:32:51,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3972 to 1955. [2021-06-01 17:32:51,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1955 states, 1954 states have (on average 4.055783009211873) internal successors, (7925), 1954 states have internal predecessors, (7925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:51,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1955 states to 1955 states and 7925 transitions. [2021-06-01 17:32:51,195 INFO L78 Accepts]: Start accepts. Automaton has 1955 states and 7925 transitions. Word has length 25 [2021-06-01 17:32:51,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:51,195 INFO L482 AbstractCegarLoop]: Abstraction has 1955 states and 7925 transitions. [2021-06-01 17:32:51,195 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:51,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1955 states and 7925 transitions. [2021-06-01 17:32:51,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:51,198 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:51,198 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:51,198 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-06-01 17:32:51,198 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:51,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:51,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1597033117, now seen corresponding path program 70 times [2021-06-01 17:32:51,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:51,199 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740622885] [2021-06-01 17:32:51,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:51,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:51,292 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:51,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740622885] [2021-06-01 17:32:51,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740622885] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:51,293 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:51,293 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:51,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670159553] [2021-06-01 17:32:51,293 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:51,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:51,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:51,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:51,293 INFO L87 Difference]: Start difference. First operand 1955 states and 7925 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:51,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:51,349 INFO L93 Difference]: Finished difference Result 4290 states and 16389 transitions. [2021-06-01 17:32:51,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:51,349 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:51,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:51,357 INFO L225 Difference]: With dead ends: 4290 [2021-06-01 17:32:51,357 INFO L226 Difference]: Without dead ends: 3910 [2021-06-01 17:32:51,358 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:51,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3910 states. [2021-06-01 17:32:51,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3910 to 1893. [2021-06-01 17:32:51,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1893 states, 1892 states have (on average 4.062367864693446) internal successors, (7686), 1892 states have internal predecessors, (7686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:51,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 7686 transitions. [2021-06-01 17:32:51,406 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 7686 transitions. Word has length 25 [2021-06-01 17:32:51,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:51,406 INFO L482 AbstractCegarLoop]: Abstraction has 1893 states and 7686 transitions. [2021-06-01 17:32:51,406 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:51,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 7686 transitions. [2021-06-01 17:32:51,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:51,409 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:51,409 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:51,409 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-06-01 17:32:51,409 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:51,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:51,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1796476421, now seen corresponding path program 71 times [2021-06-01 17:32:51,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:51,409 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639098277] [2021-06-01 17:32:51,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:51,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:51,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:51,513 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:51,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639098277] [2021-06-01 17:32:51,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639098277] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:51,513 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:51,513 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:51,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690920970] [2021-06-01 17:32:51,513 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:51,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:51,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:51,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:51,514 INFO L87 Difference]: Start difference. First operand 1893 states and 7686 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:51,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:51,594 INFO L93 Difference]: Finished difference Result 4165 states and 15915 transitions. [2021-06-01 17:32:51,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:51,595 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:51,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:51,605 INFO L225 Difference]: With dead ends: 4165 [2021-06-01 17:32:51,605 INFO L226 Difference]: Without dead ends: 3918 [2021-06-01 17:32:51,605 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:51,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3918 states. [2021-06-01 17:32:51,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3918 to 1937. [2021-06-01 17:32:51,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1937 states, 1936 states have (on average 4.0485537190082646) internal successors, (7838), 1936 states have internal predecessors, (7838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:51,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1937 states to 1937 states and 7838 transitions. [2021-06-01 17:32:51,676 INFO L78 Accepts]: Start accepts. Automaton has 1937 states and 7838 transitions. Word has length 25 [2021-06-01 17:32:51,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:51,676 INFO L482 AbstractCegarLoop]: Abstraction has 1937 states and 7838 transitions. [2021-06-01 17:32:51,676 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:51,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1937 states and 7838 transitions. [2021-06-01 17:32:51,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:51,679 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:51,680 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:51,680 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-06-01 17:32:51,680 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:51,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:51,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1428971869, now seen corresponding path program 72 times [2021-06-01 17:32:51,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:51,680 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506249622] [2021-06-01 17:32:51,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:51,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:51,781 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:51,781 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506249622] [2021-06-01 17:32:51,781 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506249622] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:51,781 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:51,781 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:51,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974955458] [2021-06-01 17:32:51,781 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:51,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:51,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:51,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:51,782 INFO L87 Difference]: Start difference. First operand 1937 states and 7838 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:51,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:51,846 INFO L93 Difference]: Finished difference Result 4236 states and 16154 transitions. [2021-06-01 17:32:51,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:51,846 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:51,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:51,854 INFO L225 Difference]: With dead ends: 4236 [2021-06-01 17:32:51,854 INFO L226 Difference]: Without dead ends: 3844 [2021-06-01 17:32:51,854 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:51,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3844 states. [2021-06-01 17:32:51,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3844 to 1863. [2021-06-01 17:32:51,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1862 states have (on average 4.080021482277122) internal successors, (7597), 1862 states have internal predecessors, (7597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:51,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 7597 transitions. [2021-06-01 17:32:51,903 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 7597 transitions. Word has length 25 [2021-06-01 17:32:51,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:51,903 INFO L482 AbstractCegarLoop]: Abstraction has 1863 states and 7597 transitions. [2021-06-01 17:32:51,903 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:51,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 7597 transitions. [2021-06-01 17:32:51,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:51,906 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:51,906 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:51,906 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-06-01 17:32:51,906 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:51,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:51,906 INFO L82 PathProgramCache]: Analyzing trace with hash 554350519, now seen corresponding path program 73 times [2021-06-01 17:32:51,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:51,907 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528341034] [2021-06-01 17:32:51,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:51,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:52,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:52,025 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:52,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528341034] [2021-06-01 17:32:52,025 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528341034] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:52,025 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:52,025 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:52,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057067410] [2021-06-01 17:32:52,025 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:52,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:52,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:52,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:52,026 INFO L87 Difference]: Start difference. First operand 1863 states and 7597 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:52,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:52,100 INFO L93 Difference]: Finished difference Result 3934 states and 15077 transitions. [2021-06-01 17:32:52,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:52,101 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:52,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:52,110 INFO L225 Difference]: With dead ends: 3934 [2021-06-01 17:32:52,111 INFO L226 Difference]: Without dead ends: 3687 [2021-06-01 17:32:52,111 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 123.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:52,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3687 states. [2021-06-01 17:32:52,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3687 to 1909. [2021-06-01 17:32:52,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1909 states, 1908 states have (on average 4.072327044025157) internal successors, (7770), 1908 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:52,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1909 states to 1909 states and 7770 transitions. [2021-06-01 17:32:52,161 INFO L78 Accepts]: Start accepts. Automaton has 1909 states and 7770 transitions. Word has length 25 [2021-06-01 17:32:52,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:52,161 INFO L482 AbstractCegarLoop]: Abstraction has 1909 states and 7770 transitions. [2021-06-01 17:32:52,161 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:52,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1909 states and 7770 transitions. [2021-06-01 17:32:52,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:52,164 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:52,164 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:52,164 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-06-01 17:32:52,164 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:52,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:52,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1035584231, now seen corresponding path program 74 times [2021-06-01 17:32:52,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:52,165 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467484663] [2021-06-01 17:32:52,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:52,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:52,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:52,272 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:52,272 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467484663] [2021-06-01 17:32:52,272 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467484663] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:52,272 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:52,272 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:52,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038736153] [2021-06-01 17:32:52,273 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:52,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:52,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:52,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:52,273 INFO L87 Difference]: Start difference. First operand 1909 states and 7770 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:52,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:52,343 INFO L93 Difference]: Finished difference Result 3972 states and 15202 transitions. [2021-06-01 17:32:52,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:52,343 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:52,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:52,351 INFO L225 Difference]: With dead ends: 3972 [2021-06-01 17:32:52,351 INFO L226 Difference]: Without dead ends: 3659 [2021-06-01 17:32:52,351 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:52,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3659 states. [2021-06-01 17:32:52,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3659 to 1881. [2021-06-01 17:32:52,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1881 states, 1880 states have (on average 4.078723404255319) internal successors, (7668), 1880 states have internal predecessors, (7668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:52,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 7668 transitions. [2021-06-01 17:32:52,398 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 7668 transitions. Word has length 25 [2021-06-01 17:32:52,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:52,398 INFO L482 AbstractCegarLoop]: Abstraction has 1881 states and 7668 transitions. [2021-06-01 17:32:52,398 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:52,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 7668 transitions. [2021-06-01 17:32:52,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:52,401 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:52,401 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:52,401 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-06-01 17:32:52,401 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:52,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:52,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1635413145, now seen corresponding path program 75 times [2021-06-01 17:32:52,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:52,401 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758586190] [2021-06-01 17:32:52,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:52,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:52,505 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:52,505 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758586190] [2021-06-01 17:32:52,505 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758586190] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:52,505 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:52,505 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:52,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766543080] [2021-06-01 17:32:52,506 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:52,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:52,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:52,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:52,506 INFO L87 Difference]: Start difference. First operand 1881 states and 7668 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:52,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:52,566 INFO L93 Difference]: Finished difference Result 3932 states and 15058 transitions. [2021-06-01 17:32:52,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:52,567 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:52,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:52,576 INFO L225 Difference]: With dead ends: 3932 [2021-06-01 17:32:52,577 INFO L226 Difference]: Without dead ends: 3685 [2021-06-01 17:32:52,577 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:52,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3685 states. [2021-06-01 17:32:52,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3685 to 1909. [2021-06-01 17:32:52,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1909 states, 1908 states have (on average 4.064989517819707) internal successors, (7756), 1908 states have internal predecessors, (7756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:52,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1909 states to 1909 states and 7756 transitions. [2021-06-01 17:32:52,627 INFO L78 Accepts]: Start accepts. Automaton has 1909 states and 7756 transitions. Word has length 25 [2021-06-01 17:32:52,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:52,627 INFO L482 AbstractCegarLoop]: Abstraction has 1909 states and 7756 transitions. [2021-06-01 17:32:52,627 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:52,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1909 states and 7756 transitions. [2021-06-01 17:32:52,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:52,630 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:52,630 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:52,630 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-06-01 17:32:52,630 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:52,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:52,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1651256167, now seen corresponding path program 76 times [2021-06-01 17:32:52,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:52,630 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686198308] [2021-06-01 17:32:52,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:52,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:52,748 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:52,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686198308] [2021-06-01 17:32:52,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686198308] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:52,749 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:52,749 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:52,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916835099] [2021-06-01 17:32:52,749 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:52,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:52,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:52,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:52,749 INFO L87 Difference]: Start difference. First operand 1909 states and 7756 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:52,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:52,833 INFO L93 Difference]: Finished difference Result 3968 states and 15178 transitions. [2021-06-01 17:32:52,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:52,834 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:52,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:52,858 INFO L225 Difference]: With dead ends: 3968 [2021-06-01 17:32:52,858 INFO L226 Difference]: Without dead ends: 3657 [2021-06-01 17:32:52,858 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 127.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:52,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3657 states. [2021-06-01 17:32:52,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3657 to 1881. [2021-06-01 17:32:52,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1881 states, 1880 states have (on average 4.071276595744681) internal successors, (7654), 1880 states have internal predecessors, (7654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:52,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 7654 transitions. [2021-06-01 17:32:52,910 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 7654 transitions. Word has length 25 [2021-06-01 17:32:52,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:52,910 INFO L482 AbstractCegarLoop]: Abstraction has 1881 states and 7654 transitions. [2021-06-01 17:32:52,910 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:52,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 7654 transitions. [2021-06-01 17:32:52,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:52,913 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:52,913 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:52,913 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-06-01 17:32:52,913 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:52,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:52,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1242392197, now seen corresponding path program 77 times [2021-06-01 17:32:52,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:52,914 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291133263] [2021-06-01 17:32:52,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:52,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:53,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:53,016 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:53,016 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291133263] [2021-06-01 17:32:53,016 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291133263] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:53,017 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:53,017 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:53,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316839412] [2021-06-01 17:32:53,017 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:53,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:53,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:53,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:53,017 INFO L87 Difference]: Start difference. First operand 1881 states and 7654 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:53,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:53,115 INFO L93 Difference]: Finished difference Result 4026 states and 15433 transitions. [2021-06-01 17:32:53,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:53,116 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:53,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:53,124 INFO L225 Difference]: With dead ends: 4026 [2021-06-01 17:32:53,124 INFO L226 Difference]: Without dead ends: 3741 [2021-06-01 17:32:53,125 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 128.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:53,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3741 states. [2021-06-01 17:32:53,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3741 to 1927. [2021-06-01 17:32:53,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1927 states, 1926 states have (on average 4.053478712357217) internal successors, (7807), 1926 states have internal predecessors, (7807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:53,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1927 states to 1927 states and 7807 transitions. [2021-06-01 17:32:53,184 INFO L78 Accepts]: Start accepts. Automaton has 1927 states and 7807 transitions. Word has length 25 [2021-06-01 17:32:53,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:53,184 INFO L482 AbstractCegarLoop]: Abstraction has 1927 states and 7807 transitions. [2021-06-01 17:32:53,184 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:53,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1927 states and 7807 transitions. [2021-06-01 17:32:53,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:53,188 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:53,188 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:53,188 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-06-01 17:32:53,188 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:53,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:53,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1009238105, now seen corresponding path program 78 times [2021-06-01 17:32:53,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:53,189 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161250503] [2021-06-01 17:32:53,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:53,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:53,299 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:53,299 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161250503] [2021-06-01 17:32:53,299 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161250503] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:53,299 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:53,300 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:53,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071717678] [2021-06-01 17:32:53,300 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:53,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:53,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:53,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:53,300 INFO L87 Difference]: Start difference. First operand 1927 states and 7807 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:53,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:53,392 INFO L93 Difference]: Finished difference Result 4024 states and 15382 transitions. [2021-06-01 17:32:53,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:53,392 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:53,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:53,402 INFO L225 Difference]: With dead ends: 4024 [2021-06-01 17:32:53,402 INFO L226 Difference]: Without dead ends: 3681 [2021-06-01 17:32:53,402 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 127.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:53,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2021-06-01 17:32:53,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 1867. [2021-06-01 17:32:53,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1867 states, 1866 states have (on average 4.079849946409432) internal successors, (7613), 1866 states have internal predecessors, (7613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:53,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1867 states to 1867 states and 7613 transitions. [2021-06-01 17:32:53,480 INFO L78 Accepts]: Start accepts. Automaton has 1867 states and 7613 transitions. Word has length 25 [2021-06-01 17:32:53,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:53,480 INFO L482 AbstractCegarLoop]: Abstraction has 1867 states and 7613 transitions. [2021-06-01 17:32:53,481 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:53,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1867 states and 7613 transitions. [2021-06-01 17:32:53,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:53,484 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:53,484 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:53,484 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-06-01 17:32:53,485 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:53,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:53,485 INFO L82 PathProgramCache]: Analyzing trace with hash 73448473, now seen corresponding path program 79 times [2021-06-01 17:32:53,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:53,485 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451627204] [2021-06-01 17:32:53,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:53,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:53,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:53,614 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:53,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451627204] [2021-06-01 17:32:53,614 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451627204] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:53,614 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:53,614 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:53,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231251183] [2021-06-01 17:32:53,614 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:53,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:53,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:53,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:53,615 INFO L87 Difference]: Start difference. First operand 1867 states and 7613 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:53,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:53,688 INFO L93 Difference]: Finished difference Result 3862 states and 14761 transitions. [2021-06-01 17:32:53,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:53,688 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:53,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:53,696 INFO L225 Difference]: With dead ends: 3862 [2021-06-01 17:32:53,696 INFO L226 Difference]: Without dead ends: 3615 [2021-06-01 17:32:53,696 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:53,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3615 states. [2021-06-01 17:32:53,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3615 to 1903. [2021-06-01 17:32:53,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1903 states, 1902 states have (on average 4.0678233438485805) internal successors, (7737), 1902 states have internal predecessors, (7737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:53,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1903 states to 1903 states and 7737 transitions. [2021-06-01 17:32:53,745 INFO L78 Accepts]: Start accepts. Automaton has 1903 states and 7737 transitions. Word has length 25 [2021-06-01 17:32:53,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:53,745 INFO L482 AbstractCegarLoop]: Abstraction has 1903 states and 7737 transitions. [2021-06-01 17:32:53,745 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:53,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1903 states and 7737 transitions. [2021-06-01 17:32:53,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:53,748 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:53,748 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:53,748 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-06-01 17:32:53,748 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:53,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:53,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1516486277, now seen corresponding path program 80 times [2021-06-01 17:32:53,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:53,748 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212565762] [2021-06-01 17:32:53,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:53,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:53,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:53,851 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:53,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212565762] [2021-06-01 17:32:53,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212565762] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:53,851 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:53,851 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:53,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051666489] [2021-06-01 17:32:53,851 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:53,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:53,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:53,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:53,852 INFO L87 Difference]: Start difference. First operand 1903 states and 7737 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:53,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:53,925 INFO L93 Difference]: Finished difference Result 3900 states and 14886 transitions. [2021-06-01 17:32:53,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:53,925 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:53,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:53,933 INFO L225 Difference]: With dead ends: 3900 [2021-06-01 17:32:53,933 INFO L226 Difference]: Without dead ends: 3587 [2021-06-01 17:32:53,933 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:53,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3587 states. [2021-06-01 17:32:53,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3587 to 1875. [2021-06-01 17:32:53,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1875 states, 1874 states have (on average 4.077374599786553) internal successors, (7641), 1874 states have internal predecessors, (7641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:53,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1875 states to 1875 states and 7641 transitions. [2021-06-01 17:32:53,980 INFO L78 Accepts]: Start accepts. Automaton has 1875 states and 7641 transitions. Word has length 25 [2021-06-01 17:32:53,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:53,980 INFO L482 AbstractCegarLoop]: Abstraction has 1875 states and 7641 transitions. [2021-06-01 17:32:53,980 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:53,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1875 states and 7641 transitions. [2021-06-01 17:32:53,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:53,983 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:53,983 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:53,983 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-06-01 17:32:53,983 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:53,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:53,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1614797799, now seen corresponding path program 81 times [2021-06-01 17:32:53,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:53,983 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352794755] [2021-06-01 17:32:53,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:53,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:54,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:54,064 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:54,064 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352794755] [2021-06-01 17:32:54,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352794755] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:54,065 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:54,065 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:54,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049945797] [2021-06-01 17:32:54,065 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:54,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:54,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:54,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:54,065 INFO L87 Difference]: Start difference. First operand 1875 states and 7641 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:54,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:54,118 INFO L93 Difference]: Finished difference Result 3812 states and 14548 transitions. [2021-06-01 17:32:54,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:54,119 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:54,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:54,128 INFO L225 Difference]: With dead ends: 3812 [2021-06-01 17:32:54,128 INFO L226 Difference]: Without dead ends: 3565 [2021-06-01 17:32:54,128 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:54,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3565 states. [2021-06-01 17:32:54,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3565 to 1891. [2021-06-01 17:32:54,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1891 states, 1890 states have (on average 4.068253968253968) internal successors, (7689), 1890 states have internal predecessors, (7689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:54,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 7689 transitions. [2021-06-01 17:32:54,176 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 7689 transitions. Word has length 25 [2021-06-01 17:32:54,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:54,176 INFO L482 AbstractCegarLoop]: Abstraction has 1891 states and 7689 transitions. [2021-06-01 17:32:54,176 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:54,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 7689 transitions. [2021-06-01 17:32:54,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:54,179 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:54,179 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:54,179 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-06-01 17:32:54,179 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:54,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:54,179 INFO L82 PathProgramCache]: Analyzing trace with hash 65698841, now seen corresponding path program 82 times [2021-06-01 17:32:54,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:54,180 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846159748] [2021-06-01 17:32:54,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:54,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:54,266 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:54,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846159748] [2021-06-01 17:32:54,267 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846159748] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:54,268 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:54,268 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:54,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591935031] [2021-06-01 17:32:54,268 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:54,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:54,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:54,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:54,268 INFO L87 Difference]: Start difference. First operand 1891 states and 7689 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:54,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:54,337 INFO L93 Difference]: Finished difference Result 3812 states and 14532 transitions. [2021-06-01 17:32:54,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:54,337 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:54,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:54,344 INFO L225 Difference]: With dead ends: 3812 [2021-06-01 17:32:54,344 INFO L226 Difference]: Without dead ends: 3549 [2021-06-01 17:32:54,344 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:54,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3549 states. [2021-06-01 17:32:54,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3549 to 1875. [2021-06-01 17:32:54,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1875 states, 1874 states have (on average 4.073105656350053) internal successors, (7633), 1874 states have internal predecessors, (7633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:54,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1875 states to 1875 states and 7633 transitions. [2021-06-01 17:32:54,391 INFO L78 Accepts]: Start accepts. Automaton has 1875 states and 7633 transitions. Word has length 25 [2021-06-01 17:32:54,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:54,391 INFO L482 AbstractCegarLoop]: Abstraction has 1875 states and 7633 transitions. [2021-06-01 17:32:54,391 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:54,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1875 states and 7633 transitions. [2021-06-01 17:32:54,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:54,394 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:54,394 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:54,394 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-06-01 17:32:54,395 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:54,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:54,395 INFO L82 PathProgramCache]: Analyzing trace with hash -197635845, now seen corresponding path program 83 times [2021-06-01 17:32:54,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:54,395 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888468748] [2021-06-01 17:32:54,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:54,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:54,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:54,481 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:54,481 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888468748] [2021-06-01 17:32:54,481 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888468748] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:54,481 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:54,481 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:54,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698486056] [2021-06-01 17:32:54,481 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:54,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:54,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:54,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:54,482 INFO L87 Difference]: Start difference. First operand 1875 states and 7633 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:54,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:54,546 INFO L93 Difference]: Finished difference Result 3900 states and 14898 transitions. [2021-06-01 17:32:54,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:54,546 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:54,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:54,553 INFO L225 Difference]: With dead ends: 3900 [2021-06-01 17:32:54,554 INFO L226 Difference]: Without dead ends: 3615 [2021-06-01 17:32:54,554 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:54,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3615 states. [2021-06-01 17:32:54,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3615 to 1903. [2021-06-01 17:32:54,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1903 states, 1902 states have (on average 4.059411146161935) internal successors, (7721), 1902 states have internal predecessors, (7721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:54,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1903 states to 1903 states and 7721 transitions. [2021-06-01 17:32:54,602 INFO L78 Accepts]: Start accepts. Automaton has 1903 states and 7721 transitions. Word has length 25 [2021-06-01 17:32:54,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:54,602 INFO L482 AbstractCegarLoop]: Abstraction has 1903 states and 7721 transitions. [2021-06-01 17:32:54,602 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:54,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1903 states and 7721 transitions. [2021-06-01 17:32:54,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:54,605 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:54,605 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:54,605 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-06-01 17:32:54,605 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:54,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:54,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1589780391, now seen corresponding path program 84 times [2021-06-01 17:32:54,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:54,606 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993497592] [2021-06-01 17:32:54,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:54,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:54,688 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:54,688 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993497592] [2021-06-01 17:32:54,689 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993497592] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:54,689 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:54,689 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:54,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390829879] [2021-06-01 17:32:54,689 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:54,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:54,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:54,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:54,689 INFO L87 Difference]: Start difference. First operand 1903 states and 7721 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:54,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:54,759 INFO L93 Difference]: Finished difference Result 3862 states and 14717 transitions. [2021-06-01 17:32:54,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:54,759 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:54,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:54,766 INFO L225 Difference]: With dead ends: 3862 [2021-06-01 17:32:54,766 INFO L226 Difference]: Without dead ends: 3579 [2021-06-01 17:32:54,767 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:54,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3579 states. [2021-06-01 17:32:54,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3579 to 1867. [2021-06-01 17:32:54,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1867 states, 1866 states have (on average 4.077706323687031) internal successors, (7609), 1866 states have internal predecessors, (7609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:54,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1867 states to 1867 states and 7609 transitions. [2021-06-01 17:32:54,813 INFO L78 Accepts]: Start accepts. Automaton has 1867 states and 7609 transitions. Word has length 25 [2021-06-01 17:32:54,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:54,813 INFO L482 AbstractCegarLoop]: Abstraction has 1867 states and 7609 transitions. [2021-06-01 17:32:54,813 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:54,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1867 states and 7609 transitions. [2021-06-01 17:32:54,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:54,816 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:54,816 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:54,816 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-06-01 17:32:54,816 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:54,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:54,817 INFO L82 PathProgramCache]: Analyzing trace with hash 461453435, now seen corresponding path program 85 times [2021-06-01 17:32:54,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:54,817 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699953453] [2021-06-01 17:32:54,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:54,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:54,913 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:54,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699953453] [2021-06-01 17:32:54,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699953453] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:54,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:54,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:54,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888974489] [2021-06-01 17:32:54,913 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:54,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:54,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:54,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:54,914 INFO L87 Difference]: Start difference. First operand 1867 states and 7609 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:54,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:54,980 INFO L93 Difference]: Finished difference Result 3858 states and 14747 transitions. [2021-06-01 17:32:54,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:54,981 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:54,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:54,988 INFO L225 Difference]: With dead ends: 3858 [2021-06-01 17:32:54,988 INFO L226 Difference]: Without dead ends: 3611 [2021-06-01 17:32:54,988 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:55,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3611 states. [2021-06-01 17:32:55,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3611 to 1903. [2021-06-01 17:32:55,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1903 states, 1902 states have (on average 4.065720294426919) internal successors, (7733), 1902 states have internal predecessors, (7733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:55,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1903 states to 1903 states and 7733 transitions. [2021-06-01 17:32:55,035 INFO L78 Accepts]: Start accepts. Automaton has 1903 states and 7733 transitions. Word has length 25 [2021-06-01 17:32:55,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:55,036 INFO L482 AbstractCegarLoop]: Abstraction has 1903 states and 7733 transitions. [2021-06-01 17:32:55,036 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:55,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1903 states and 7733 transitions. [2021-06-01 17:32:55,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:55,038 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:55,038 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:55,038 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-06-01 17:32:55,038 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:55,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:55,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1469751419, now seen corresponding path program 86 times [2021-06-01 17:32:55,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:55,039 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285684357] [2021-06-01 17:32:55,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:55,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:55,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:55,133 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:55,133 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285684357] [2021-06-01 17:32:55,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285684357] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:55,133 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:55,133 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:55,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408953747] [2021-06-01 17:32:55,133 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:55,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:55,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:55,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:55,134 INFO L87 Difference]: Start difference. First operand 1903 states and 7733 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:55,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:55,203 INFO L93 Difference]: Finished difference Result 3894 states and 14867 transitions. [2021-06-01 17:32:55,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:55,203 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:55,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:55,210 INFO L225 Difference]: With dead ends: 3894 [2021-06-01 17:32:55,211 INFO L226 Difference]: Without dead ends: 3583 [2021-06-01 17:32:55,211 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:55,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3583 states. [2021-06-01 17:32:55,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3583 to 1875. [2021-06-01 17:32:55,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1875 states, 1874 states have (on average 4.0752401280683035) internal successors, (7637), 1874 states have internal predecessors, (7637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:55,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1875 states to 1875 states and 7637 transitions. [2021-06-01 17:32:55,257 INFO L78 Accepts]: Start accepts. Automaton has 1875 states and 7637 transitions. Word has length 25 [2021-06-01 17:32:55,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:55,257 INFO L482 AbstractCegarLoop]: Abstraction has 1875 states and 7637 transitions. [2021-06-01 17:32:55,257 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:55,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1875 states and 7637 transitions. [2021-06-01 17:32:55,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:55,259 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:55,259 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:55,259 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-06-01 17:32:55,259 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:55,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:55,260 INFO L82 PathProgramCache]: Analyzing trace with hash -385343527, now seen corresponding path program 87 times [2021-06-01 17:32:55,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:55,260 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871629410] [2021-06-01 17:32:55,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:55,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:55,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:55,344 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:55,344 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871629410] [2021-06-01 17:32:55,344 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871629410] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:55,344 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:55,344 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:55,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755715655] [2021-06-01 17:32:55,344 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:55,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:55,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:55,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:55,345 INFO L87 Difference]: Start difference. First operand 1875 states and 7637 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:55,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:55,414 INFO L93 Difference]: Finished difference Result 3810 states and 14539 transitions. [2021-06-01 17:32:55,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:55,415 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:55,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:55,422 INFO L225 Difference]: With dead ends: 3810 [2021-06-01 17:32:55,422 INFO L226 Difference]: Without dead ends: 3563 [2021-06-01 17:32:55,422 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 85.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:55,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3563 states. [2021-06-01 17:32:55,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3563 to 1891. [2021-06-01 17:32:55,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1891 states, 1890 states have (on average 4.0661375661375665) internal successors, (7685), 1890 states have internal predecessors, (7685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:55,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 7685 transitions. [2021-06-01 17:32:55,493 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 7685 transitions. Word has length 25 [2021-06-01 17:32:55,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:55,493 INFO L482 AbstractCegarLoop]: Abstraction has 1891 states and 7685 transitions. [2021-06-01 17:32:55,493 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:55,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 7685 transitions. [2021-06-01 17:32:55,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:55,496 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:55,496 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:55,496 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-06-01 17:32:55,496 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:55,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:55,496 INFO L82 PathProgramCache]: Analyzing trace with hash -415203205, now seen corresponding path program 88 times [2021-06-01 17:32:55,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:55,496 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612966638] [2021-06-01 17:32:55,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:55,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:55,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:55,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612966638] [2021-06-01 17:32:55,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612966638] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:55,585 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:55,585 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:55,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048244546] [2021-06-01 17:32:55,585 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:55,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:55,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:55,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:55,586 INFO L87 Difference]: Start difference. First operand 1891 states and 7685 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:55,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:55,668 INFO L93 Difference]: Finished difference Result 3810 states and 14523 transitions. [2021-06-01 17:32:55,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:55,668 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:55,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:55,677 INFO L225 Difference]: With dead ends: 3810 [2021-06-01 17:32:55,678 INFO L226 Difference]: Without dead ends: 3547 [2021-06-01 17:32:55,678 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:55,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3547 states. [2021-06-01 17:32:55,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3547 to 1875. [2021-06-01 17:32:55,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1875 states, 1874 states have (on average 4.070971184631803) internal successors, (7629), 1874 states have internal predecessors, (7629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:55,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1875 states to 1875 states and 7629 transitions. [2021-06-01 17:32:55,733 INFO L78 Accepts]: Start accepts. Automaton has 1875 states and 7629 transitions. Word has length 25 [2021-06-01 17:32:55,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:55,734 INFO L482 AbstractCegarLoop]: Abstraction has 1875 states and 7629 transitions. [2021-06-01 17:32:55,734 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:55,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1875 states and 7629 transitions. [2021-06-01 17:32:55,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:55,736 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:55,736 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:55,736 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-06-01 17:32:55,736 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:55,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:55,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1519319163, now seen corresponding path program 89 times [2021-06-01 17:32:55,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:55,737 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597819903] [2021-06-01 17:32:55,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:55,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:55,813 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:55,813 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597819903] [2021-06-01 17:32:55,813 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597819903] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:55,813 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:55,814 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:55,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872122448] [2021-06-01 17:32:55,814 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:55,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:55,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:55,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:55,814 INFO L87 Difference]: Start difference. First operand 1875 states and 7629 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:55,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:55,887 INFO L93 Difference]: Finished difference Result 3894 states and 14879 transitions. [2021-06-01 17:32:55,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:55,887 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:55,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:55,894 INFO L225 Difference]: With dead ends: 3894 [2021-06-01 17:32:55,894 INFO L226 Difference]: Without dead ends: 3611 [2021-06-01 17:32:55,895 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:55,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3611 states. [2021-06-01 17:32:55,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3611 to 1903. [2021-06-01 17:32:55,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1903 states, 1902 states have (on average 4.0573080967402735) internal successors, (7717), 1902 states have internal predecessors, (7717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:55,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1903 states to 1903 states and 7717 transitions. [2021-06-01 17:32:55,941 INFO L78 Accepts]: Start accepts. Automaton has 1903 states and 7717 transitions. Word has length 25 [2021-06-01 17:32:55,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:55,941 INFO L482 AbstractCegarLoop]: Abstraction has 1903 states and 7717 transitions. [2021-06-01 17:32:55,941 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:55,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1903 states and 7717 transitions. [2021-06-01 17:32:55,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:55,944 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:55,944 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:55,944 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-06-01 17:32:55,944 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:55,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:55,944 INFO L82 PathProgramCache]: Analyzing trace with hash -524017831, now seen corresponding path program 90 times [2021-06-01 17:32:55,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:55,944 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950024647] [2021-06-01 17:32:55,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:55,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:56,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:56,023 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:56,023 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950024647] [2021-06-01 17:32:56,023 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950024647] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:56,023 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:56,023 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:56,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391451006] [2021-06-01 17:32:56,023 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:56,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:56,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:56,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:56,024 INFO L87 Difference]: Start difference. First operand 1903 states and 7717 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:56,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:56,094 INFO L93 Difference]: Finished difference Result 3858 states and 14703 transitions. [2021-06-01 17:32:56,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:56,094 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:56,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:56,101 INFO L225 Difference]: With dead ends: 3858 [2021-06-01 17:32:56,101 INFO L226 Difference]: Without dead ends: 3575 [2021-06-01 17:32:56,102 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:56,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3575 states. [2021-06-01 17:32:56,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3575 to 1867. [2021-06-01 17:32:56,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1867 states, 1866 states have (on average 4.07556270096463) internal successors, (7605), 1866 states have internal predecessors, (7605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:56,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1867 states to 1867 states and 7605 transitions. [2021-06-01 17:32:56,148 INFO L78 Accepts]: Start accepts. Automaton has 1867 states and 7605 transitions. Word has length 25 [2021-06-01 17:32:56,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:56,148 INFO L482 AbstractCegarLoop]: Abstraction has 1867 states and 7605 transitions. [2021-06-01 17:32:56,148 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:56,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1867 states and 7605 transitions. [2021-06-01 17:32:56,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:56,151 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:56,151 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:56,151 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-06-01 17:32:56,151 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:56,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:56,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1185557725, now seen corresponding path program 91 times [2021-06-01 17:32:56,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:56,151 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555513122] [2021-06-01 17:32:56,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:56,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:56,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:56,234 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:56,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555513122] [2021-06-01 17:32:56,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555513122] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:56,235 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:56,235 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:56,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807437759] [2021-06-01 17:32:56,235 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:56,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:56,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:56,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:56,235 INFO L87 Difference]: Start difference. First operand 1867 states and 7605 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:56,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:56,313 INFO L93 Difference]: Finished difference Result 4026 states and 15449 transitions. [2021-06-01 17:32:56,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:56,314 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:56,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:56,321 INFO L225 Difference]: With dead ends: 4026 [2021-06-01 17:32:56,321 INFO L226 Difference]: Without dead ends: 3741 [2021-06-01 17:32:56,322 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:56,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3741 states. [2021-06-01 17:32:56,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3741 to 1927. [2021-06-01 17:32:56,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1927 states, 1926 states have (on average 4.061786085150571) internal successors, (7823), 1926 states have internal predecessors, (7823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:56,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1927 states to 1927 states and 7823 transitions. [2021-06-01 17:32:56,370 INFO L78 Accepts]: Start accepts. Automaton has 1927 states and 7823 transitions. Word has length 25 [2021-06-01 17:32:56,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:56,370 INFO L482 AbstractCegarLoop]: Abstraction has 1927 states and 7823 transitions. [2021-06-01 17:32:56,370 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:56,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1927 states and 7823 transitions. [2021-06-01 17:32:56,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:56,373 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:56,373 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:56,373 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-06-01 17:32:56,373 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:56,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:56,373 INFO L82 PathProgramCache]: Analyzing trace with hash -857779269, now seen corresponding path program 92 times [2021-06-01 17:32:56,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:56,374 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398645261] [2021-06-01 17:32:56,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:56,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:56,457 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:56,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398645261] [2021-06-01 17:32:56,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398645261] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:56,457 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:56,458 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:56,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616584987] [2021-06-01 17:32:56,458 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:56,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:56,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:56,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:56,458 INFO L87 Difference]: Start difference. First operand 1927 states and 7823 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:56,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:56,526 INFO L93 Difference]: Finished difference Result 4024 states and 15398 transitions. [2021-06-01 17:32:56,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:56,526 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:56,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:56,534 INFO L225 Difference]: With dead ends: 4024 [2021-06-01 17:32:56,534 INFO L226 Difference]: Without dead ends: 3695 [2021-06-01 17:32:56,534 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:56,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3695 states. [2021-06-01 17:32:56,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3695 to 1881. [2021-06-01 17:32:56,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1881 states, 1880 states have (on average 4.072340425531915) internal successors, (7656), 1880 states have internal predecessors, (7656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:56,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 7656 transitions. [2021-06-01 17:32:56,581 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 7656 transitions. Word has length 25 [2021-06-01 17:32:56,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:56,581 INFO L482 AbstractCegarLoop]: Abstraction has 1881 states and 7656 transitions. [2021-06-01 17:32:56,581 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:56,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 7656 transitions. [2021-06-01 17:32:56,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:56,584 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:56,584 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:56,584 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-06-01 17:32:56,584 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:56,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:56,585 INFO L82 PathProgramCache]: Analyzing trace with hash 338760763, now seen corresponding path program 93 times [2021-06-01 17:32:56,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:56,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683290599] [2021-06-01 17:32:56,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:56,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:56,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:56,673 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:56,673 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683290599] [2021-06-01 17:32:56,673 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683290599] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:56,673 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:56,673 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:56,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183055077] [2021-06-01 17:32:56,673 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:56,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:56,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:56,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:56,673 INFO L87 Difference]: Start difference. First operand 1881 states and 7656 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:56,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:56,750 INFO L93 Difference]: Finished difference Result 3972 states and 15204 transitions. [2021-06-01 17:32:56,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:56,750 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:56,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:56,758 INFO L225 Difference]: With dead ends: 3972 [2021-06-01 17:32:56,758 INFO L226 Difference]: Without dead ends: 3687 [2021-06-01 17:32:56,758 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:56,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3687 states. [2021-06-01 17:32:56,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3687 to 1909. [2021-06-01 17:32:56,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1909 states, 1908 states have (on average 4.058700209643606) internal successors, (7744), 1908 states have internal predecessors, (7744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:56,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1909 states to 1909 states and 7744 transitions. [2021-06-01 17:32:56,805 INFO L78 Accepts]: Start accepts. Automaton has 1909 states and 7744 transitions. Word has length 25 [2021-06-01 17:32:56,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:56,806 INFO L482 AbstractCegarLoop]: Abstraction has 1909 states and 7744 transitions. [2021-06-01 17:32:56,806 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:56,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1909 states and 7744 transitions. [2021-06-01 17:32:56,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:56,808 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:56,808 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:56,808 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-06-01 17:32:56,808 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:56,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:56,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1531227195, now seen corresponding path program 94 times [2021-06-01 17:32:56,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:56,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191151898] [2021-06-01 17:32:56,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:56,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:56,910 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:56,911 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191151898] [2021-06-01 17:32:56,911 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191151898] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:56,911 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:56,911 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:56,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563779864] [2021-06-01 17:32:56,911 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:56,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:56,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:56,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:56,912 INFO L87 Difference]: Start difference. First operand 1909 states and 7744 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:56,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:56,984 INFO L93 Difference]: Finished difference Result 3934 states and 15023 transitions. [2021-06-01 17:32:56,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:56,985 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:56,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:56,993 INFO L225 Difference]: With dead ends: 3934 [2021-06-01 17:32:56,994 INFO L226 Difference]: Without dead ends: 3659 [2021-06-01 17:32:56,994 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:57,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3659 states. [2021-06-01 17:32:57,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3659 to 1881. [2021-06-01 17:32:57,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1881 states, 1880 states have (on average 4.064893617021276) internal successors, (7642), 1880 states have internal predecessors, (7642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:57,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 7642 transitions. [2021-06-01 17:32:57,041 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 7642 transitions. Word has length 25 [2021-06-01 17:32:57,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:57,041 INFO L482 AbstractCegarLoop]: Abstraction has 1881 states and 7642 transitions. [2021-06-01 17:32:57,041 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:57,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 7642 transitions. [2021-06-01 17:32:57,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:57,044 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:57,044 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:57,044 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-06-01 17:32:57,044 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:57,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:57,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1321108377, now seen corresponding path program 95 times [2021-06-01 17:32:57,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:57,044 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274923568] [2021-06-01 17:32:57,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:57,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:57,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:57,127 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:57,127 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274923568] [2021-06-01 17:32:57,127 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274923568] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:57,127 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:57,127 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:57,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957537105] [2021-06-01 17:32:57,127 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:57,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:57,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:57,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:57,128 INFO L87 Difference]: Start difference. First operand 1881 states and 7642 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:57,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:57,203 INFO L93 Difference]: Finished difference Result 3968 states and 15180 transitions. [2021-06-01 17:32:57,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:57,204 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:57,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:57,212 INFO L225 Difference]: With dead ends: 3968 [2021-06-01 17:32:57,212 INFO L226 Difference]: Without dead ends: 3685 [2021-06-01 17:32:57,212 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:57,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3685 states. [2021-06-01 17:32:57,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3685 to 1909. [2021-06-01 17:32:57,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1909 states, 1908 states have (on average 4.051362683438155) internal successors, (7730), 1908 states have internal predecessors, (7730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:57,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1909 states to 1909 states and 7730 transitions. [2021-06-01 17:32:57,259 INFO L78 Accepts]: Start accepts. Automaton has 1909 states and 7730 transitions. Word has length 25 [2021-06-01 17:32:57,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:57,259 INFO L482 AbstractCegarLoop]: Abstraction has 1909 states and 7730 transitions. [2021-06-01 17:32:57,259 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:57,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1909 states and 7730 transitions. [2021-06-01 17:32:57,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:57,262 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:57,262 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:57,262 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-06-01 17:32:57,262 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:57,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:57,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1892796293, now seen corresponding path program 96 times [2021-06-01 17:32:57,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:57,262 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782037323] [2021-06-01 17:32:57,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:57,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:57,340 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:57,340 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782037323] [2021-06-01 17:32:57,340 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782037323] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:57,340 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:57,340 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:57,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003832633] [2021-06-01 17:32:57,340 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:57,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:57,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:57,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:57,341 INFO L87 Difference]: Start difference. First operand 1909 states and 7730 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:57,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:57,431 INFO L93 Difference]: Finished difference Result 3932 states and 15004 transitions. [2021-06-01 17:32:57,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:57,431 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:57,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:57,439 INFO L225 Difference]: With dead ends: 3932 [2021-06-01 17:32:57,439 INFO L226 Difference]: Without dead ends: 3639 [2021-06-01 17:32:57,439 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:57,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3639 states. [2021-06-01 17:32:57,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3639 to 1863. [2021-06-01 17:32:57,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1862 states have (on average 4.078947368421052) internal successors, (7595), 1862 states have internal predecessors, (7595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:57,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 7595 transitions. [2021-06-01 17:32:57,488 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 7595 transitions. Word has length 25 [2021-06-01 17:32:57,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:57,488 INFO L482 AbstractCegarLoop]: Abstraction has 1863 states and 7595 transitions. [2021-06-01 17:32:57,488 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:57,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 7595 transitions. [2021-06-01 17:32:57,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:57,490 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:57,490 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:57,491 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-06-01 17:32:57,491 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:57,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:57,491 INFO L82 PathProgramCache]: Analyzing trace with hash -782839361, now seen corresponding path program 97 times [2021-06-01 17:32:57,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:57,491 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707642889] [2021-06-01 17:32:57,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:57,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:57,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:57,573 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:57,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707642889] [2021-06-01 17:32:57,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707642889] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:57,573 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:57,573 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:57,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547509708] [2021-06-01 17:32:57,573 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:57,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:57,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:57,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:57,574 INFO L87 Difference]: Start difference. First operand 1863 states and 7595 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:57,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:57,639 INFO L93 Difference]: Finished difference Result 4298 states and 16547 transitions. [2021-06-01 17:32:57,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:57,640 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:57,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:57,648 INFO L225 Difference]: With dead ends: 4298 [2021-06-01 17:32:57,648 INFO L226 Difference]: Without dead ends: 4013 [2021-06-01 17:32:57,648 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:57,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4013 states. [2021-06-01 17:32:57,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4013 to 1946. [2021-06-01 17:32:57,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1946 states, 1945 states have (on average 4.06426735218509) internal successors, (7905), 1945 states have internal predecessors, (7905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:57,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1946 states to 1946 states and 7905 transitions. [2021-06-01 17:32:57,698 INFO L78 Accepts]: Start accepts. Automaton has 1946 states and 7905 transitions. Word has length 25 [2021-06-01 17:32:57,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:57,698 INFO L482 AbstractCegarLoop]: Abstraction has 1946 states and 7905 transitions. [2021-06-01 17:32:57,698 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:57,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1946 states and 7905 transitions. [2021-06-01 17:32:57,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:57,701 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:57,701 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:57,701 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-06-01 17:32:57,701 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:57,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:57,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1468790941, now seen corresponding path program 98 times [2021-06-01 17:32:57,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:57,702 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921420175] [2021-06-01 17:32:57,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:57,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:57,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:57,808 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:57,808 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921420175] [2021-06-01 17:32:57,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921420175] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:57,809 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:57,809 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:57,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440318048] [2021-06-01 17:32:57,809 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:57,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:57,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:57,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:57,809 INFO L87 Difference]: Start difference. First operand 1946 states and 7905 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:57,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:57,882 INFO L93 Difference]: Finished difference Result 4296 states and 16496 transitions. [2021-06-01 17:32:57,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:57,882 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:57,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:57,890 INFO L225 Difference]: With dead ends: 4296 [2021-06-01 17:32:57,890 INFO L226 Difference]: Without dead ends: 3967 [2021-06-01 17:32:57,891 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:57,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3967 states. [2021-06-01 17:32:57,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3967 to 1900. [2021-06-01 17:32:57,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1900 states, 1899 states have (on average 4.074776197998947) internal successors, (7738), 1899 states have internal predecessors, (7738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:57,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1900 states to 1900 states and 7738 transitions. [2021-06-01 17:32:57,964 INFO L78 Accepts]: Start accepts. Automaton has 1900 states and 7738 transitions. Word has length 25 [2021-06-01 17:32:57,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:57,964 INFO L482 AbstractCegarLoop]: Abstraction has 1900 states and 7738 transitions. [2021-06-01 17:32:57,964 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:57,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1900 states and 7738 transitions. [2021-06-01 17:32:57,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:57,967 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:57,967 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:57,967 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-06-01 17:32:57,967 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:57,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:57,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1629636323, now seen corresponding path program 99 times [2021-06-01 17:32:57,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:57,968 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604306187] [2021-06-01 17:32:57,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:58,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:58,056 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:58,056 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604306187] [2021-06-01 17:32:58,056 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604306187] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:58,056 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:58,056 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:58,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044714498] [2021-06-01 17:32:58,056 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:58,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:58,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:58,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:58,057 INFO L87 Difference]: Start difference. First operand 1900 states and 7738 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:58,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:58,122 INFO L93 Difference]: Finished difference Result 4244 states and 16302 transitions. [2021-06-01 17:32:58,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:58,123 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:58,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:58,131 INFO L225 Difference]: With dead ends: 4244 [2021-06-01 17:32:58,131 INFO L226 Difference]: Without dead ends: 3959 [2021-06-01 17:32:58,131 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:58,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3959 states. [2021-06-01 17:32:58,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3959 to 1928. [2021-06-01 17:32:58,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1928 states, 1927 states have (on average 4.06123508043591) internal successors, (7826), 1927 states have internal predecessors, (7826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:58,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1928 states to 1928 states and 7826 transitions. [2021-06-01 17:32:58,180 INFO L78 Accepts]: Start accepts. Automaton has 1928 states and 7826 transitions. Word has length 25 [2021-06-01 17:32:58,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:58,181 INFO L482 AbstractCegarLoop]: Abstraction has 1928 states and 7826 transitions. [2021-06-01 17:32:58,181 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:58,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1928 states and 7826 transitions. [2021-06-01 17:32:58,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:58,183 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:58,183 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:58,183 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-06-01 17:32:58,183 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:58,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:58,184 INFO L82 PathProgramCache]: Analyzing trace with hash -437169891, now seen corresponding path program 100 times [2021-06-01 17:32:58,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:58,184 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14235600] [2021-06-01 17:32:58,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:58,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:58,288 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:58,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14235600] [2021-06-01 17:32:58,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14235600] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:58,288 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:58,288 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:58,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271336020] [2021-06-01 17:32:58,289 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:58,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:58,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:58,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:58,289 INFO L87 Difference]: Start difference. First operand 1928 states and 7826 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:58,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:58,356 INFO L93 Difference]: Finished difference Result 4206 states and 16121 transitions. [2021-06-01 17:32:58,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:58,356 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:58,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:58,364 INFO L225 Difference]: With dead ends: 4206 [2021-06-01 17:32:58,364 INFO L226 Difference]: Without dead ends: 3931 [2021-06-01 17:32:58,364 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:58,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2021-06-01 17:32:58,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 1900. [2021-06-01 17:32:58,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1900 states, 1899 states have (on average 4.067403896787783) internal successors, (7724), 1899 states have internal predecessors, (7724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:58,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1900 states to 1900 states and 7724 transitions. [2021-06-01 17:32:58,414 INFO L78 Accepts]: Start accepts. Automaton has 1900 states and 7724 transitions. Word has length 25 [2021-06-01 17:32:58,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:58,415 INFO L482 AbstractCegarLoop]: Abstraction has 1900 states and 7724 transitions. [2021-06-01 17:32:58,415 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:58,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1900 states and 7724 transitions. [2021-06-01 17:32:58,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:58,417 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:58,417 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:58,417 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-06-01 17:32:58,418 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:58,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:58,418 INFO L82 PathProgramCache]: Analyzing trace with hash -647288709, now seen corresponding path program 101 times [2021-06-01 17:32:58,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:58,418 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921315325] [2021-06-01 17:32:58,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:58,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:58,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:58,495 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:58,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921315325] [2021-06-01 17:32:58,496 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921315325] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:58,496 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:58,496 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:58,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830076738] [2021-06-01 17:32:58,496 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:58,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:58,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:58,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:58,496 INFO L87 Difference]: Start difference. First operand 1900 states and 7724 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:58,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:58,558 INFO L93 Difference]: Finished difference Result 4240 states and 16278 transitions. [2021-06-01 17:32:58,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:58,558 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:58,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:58,566 INFO L225 Difference]: With dead ends: 4240 [2021-06-01 17:32:58,567 INFO L226 Difference]: Without dead ends: 3957 [2021-06-01 17:32:58,567 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:58,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3957 states. [2021-06-01 17:32:58,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3957 to 1928. [2021-06-01 17:32:58,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1928 states, 1927 states have (on average 4.053969901401142) internal successors, (7812), 1927 states have internal predecessors, (7812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:58,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1928 states to 1928 states and 7812 transitions. [2021-06-01 17:32:58,617 INFO L78 Accepts]: Start accepts. Automaton has 1928 states and 7812 transitions. Word has length 25 [2021-06-01 17:32:58,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:58,617 INFO L482 AbstractCegarLoop]: Abstraction has 1928 states and 7812 transitions. [2021-06-01 17:32:58,617 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:58,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1928 states and 7812 transitions. [2021-06-01 17:32:58,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:58,619 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:58,619 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:58,619 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-06-01 17:32:58,619 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:58,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:58,620 INFO L82 PathProgramCache]: Analyzing trace with hash 433773917, now seen corresponding path program 102 times [2021-06-01 17:32:58,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:58,620 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906989781] [2021-06-01 17:32:58,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:58,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:58,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:58,702 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:58,702 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906989781] [2021-06-01 17:32:58,702 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906989781] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:58,702 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:58,702 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:58,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951877522] [2021-06-01 17:32:58,702 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:58,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:58,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:58,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:58,702 INFO L87 Difference]: Start difference. First operand 1928 states and 7812 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:58,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:58,768 INFO L93 Difference]: Finished difference Result 4204 states and 16102 transitions. [2021-06-01 17:32:58,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:58,768 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:58,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:58,776 INFO L225 Difference]: With dead ends: 4204 [2021-06-01 17:32:58,777 INFO L226 Difference]: Without dead ends: 3915 [2021-06-01 17:32:58,777 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:58,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3915 states. [2021-06-01 17:32:58,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3915 to 1886. [2021-06-01 17:32:58,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1886 states, 1885 states have (on average 4.074270557029178) internal successors, (7680), 1885 states have internal predecessors, (7680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:58,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 7680 transitions. [2021-06-01 17:32:58,826 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 7680 transitions. Word has length 25 [2021-06-01 17:32:58,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:58,826 INFO L482 AbstractCegarLoop]: Abstraction has 1886 states and 7680 transitions. [2021-06-01 17:32:58,826 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:58,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 7680 transitions. [2021-06-01 17:32:58,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:58,829 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:58,829 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:58,829 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-06-01 17:32:58,829 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:58,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:58,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1538821917, now seen corresponding path program 103 times [2021-06-01 17:32:58,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:58,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486314198] [2021-06-01 17:32:58,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:58,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:58,919 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:58,920 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486314198] [2021-06-01 17:32:58,920 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486314198] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:58,920 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:58,920 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:58,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503964358] [2021-06-01 17:32:58,920 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:58,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:58,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:58,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:58,920 INFO L87 Difference]: Start difference. First operand 1886 states and 7680 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:58,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:58,988 INFO L93 Difference]: Finished difference Result 4487 states and 17282 transitions. [2021-06-01 17:32:58,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:58,988 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:58,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:58,997 INFO L225 Difference]: With dead ends: 4487 [2021-06-01 17:32:58,997 INFO L226 Difference]: Without dead ends: 4202 [2021-06-01 17:32:58,998 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:59,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4202 states. [2021-06-01 17:32:59,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4202 to 1979. [2021-06-01 17:32:59,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1979 states, 1978 states have (on average 4.0586450960566225) internal successors, (8028), 1978 states have internal predecessors, (8028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:59,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1979 states to 1979 states and 8028 transitions. [2021-06-01 17:32:59,050 INFO L78 Accepts]: Start accepts. Automaton has 1979 states and 8028 transitions. Word has length 25 [2021-06-01 17:32:59,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:59,051 INFO L482 AbstractCegarLoop]: Abstraction has 1979 states and 8028 transitions. [2021-06-01 17:32:59,051 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:59,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1979 states and 8028 transitions. [2021-06-01 17:32:59,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:59,053 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:59,053 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:59,053 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-06-01 17:32:59,053 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:59,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:59,054 INFO L82 PathProgramCache]: Analyzing trace with hash -504515077, now seen corresponding path program 104 times [2021-06-01 17:32:59,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:59,054 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610975835] [2021-06-01 17:32:59,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:59,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:59,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:59,133 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:59,133 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610975835] [2021-06-01 17:32:59,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610975835] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:59,133 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:59,133 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:59,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070912851] [2021-06-01 17:32:59,133 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:59,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:59,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:59,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:59,134 INFO L87 Difference]: Start difference. First operand 1979 states and 8028 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:59,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:59,220 INFO L93 Difference]: Finished difference Result 4485 states and 17231 transitions. [2021-06-01 17:32:59,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:59,220 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:59,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:59,229 INFO L225 Difference]: With dead ends: 4485 [2021-06-01 17:32:59,229 INFO L226 Difference]: Without dead ends: 4156 [2021-06-01 17:32:59,229 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:59,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4156 states. [2021-06-01 17:32:59,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4156 to 1933. [2021-06-01 17:32:59,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1933 states, 1932 states have (on average 4.064182194616977) internal successors, (7852), 1932 states have internal predecessors, (7852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:59,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 7852 transitions. [2021-06-01 17:32:59,279 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 7852 transitions. Word has length 25 [2021-06-01 17:32:59,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:59,279 INFO L482 AbstractCegarLoop]: Abstraction has 1933 states and 7852 transitions. [2021-06-01 17:32:59,279 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:59,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 7852 transitions. [2021-06-01 17:32:59,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:59,282 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:59,282 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:59,282 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-06-01 17:32:59,282 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:59,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:59,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1964562205, now seen corresponding path program 105 times [2021-06-01 17:32:59,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:59,283 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213278748] [2021-06-01 17:32:59,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:59,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:59,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:59,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213278748] [2021-06-01 17:32:59,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213278748] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:59,363 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:59,363 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:59,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564944042] [2021-06-01 17:32:59,363 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:59,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:59,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:59,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:59,363 INFO L87 Difference]: Start difference. First operand 1933 states and 7852 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:59,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:59,431 INFO L93 Difference]: Finished difference Result 4555 states and 17493 transitions. [2021-06-01 17:32:59,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:59,431 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:59,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:59,440 INFO L225 Difference]: With dead ends: 4555 [2021-06-01 17:32:59,440 INFO L226 Difference]: Without dead ends: 4270 [2021-06-01 17:32:59,440 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:59,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4270 states. [2021-06-01 17:32:59,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4270 to 2012. [2021-06-01 17:32:59,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2012 states, 2011 states have (on average 4.037294878170065) internal successors, (8119), 2011 states have internal predecessors, (8119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:59,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2012 states to 2012 states and 8119 transitions. [2021-06-01 17:32:59,492 INFO L78 Accepts]: Start accepts. Automaton has 2012 states and 8119 transitions. Word has length 25 [2021-06-01 17:32:59,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:59,492 INFO L482 AbstractCegarLoop]: Abstraction has 2012 states and 8119 transitions. [2021-06-01 17:32:59,492 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:59,492 INFO L276 IsEmpty]: Start isEmpty. Operand 2012 states and 8119 transitions. [2021-06-01 17:32:59,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:59,495 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:59,495 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:59,495 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-06-01 17:32:59,495 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:59,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:59,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1408773917, now seen corresponding path program 106 times [2021-06-01 17:32:59,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:59,496 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809077490] [2021-06-01 17:32:59,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:59,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:59,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:59,587 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:59,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809077490] [2021-06-01 17:32:59,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809077490] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:59,587 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:59,587 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:59,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960096488] [2021-06-01 17:32:59,587 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:59,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:59,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:59,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:59,588 INFO L87 Difference]: Start difference. First operand 2012 states and 8119 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:59,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:59,647 INFO L93 Difference]: Finished difference Result 4588 states and 17560 transitions. [2021-06-01 17:32:59,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:59,647 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:59,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:59,656 INFO L225 Difference]: With dead ends: 4588 [2021-06-01 17:32:59,656 INFO L226 Difference]: Without dead ends: 4191 [2021-06-01 17:32:59,656 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:59,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4191 states. [2021-06-01 17:32:59,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4191 to 1933. [2021-06-01 17:32:59,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1933 states, 1932 states have (on average 4.0439958592132506) internal successors, (7813), 1932 states have internal predecessors, (7813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:59,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 7813 transitions. [2021-06-01 17:32:59,708 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 7813 transitions. Word has length 25 [2021-06-01 17:32:59,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:59,709 INFO L482 AbstractCegarLoop]: Abstraction has 1933 states and 7813 transitions. [2021-06-01 17:32:59,709 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:59,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 7813 transitions. [2021-06-01 17:32:59,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:59,711 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:59,711 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:59,711 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-06-01 17:32:59,711 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:59,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:59,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1348057477, now seen corresponding path program 107 times [2021-06-01 17:32:59,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:59,712 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929524684] [2021-06-01 17:32:59,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:32:59,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:32:59,795 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:32:59,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929524684] [2021-06-01 17:32:59,795 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929524684] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:32:59,795 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:32:59,795 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:32:59,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997538691] [2021-06-01 17:32:59,796 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:32:59,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:32:59,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:32:59,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:32:59,796 INFO L87 Difference]: Start difference. First operand 1933 states and 7813 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:59,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:32:59,865 INFO L93 Difference]: Finished difference Result 4534 states and 17393 transitions. [2021-06-01 17:32:59,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:32:59,866 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:32:59,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:32:59,874 INFO L225 Difference]: With dead ends: 4534 [2021-06-01 17:32:59,874 INFO L226 Difference]: Without dead ends: 4251 [2021-06-01 17:32:59,875 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:32:59,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4251 states. [2021-06-01 17:32:59,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4251 to 1995. [2021-06-01 17:32:59,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1995 states, 1994 states have (on average 4.027081243731193) internal successors, (8030), 1994 states have internal predecessors, (8030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:59,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 8030 transitions. [2021-06-01 17:32:59,934 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 8030 transitions. Word has length 25 [2021-06-01 17:32:59,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:32:59,934 INFO L482 AbstractCegarLoop]: Abstraction has 1995 states and 8030 transitions. [2021-06-01 17:32:59,934 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:32:59,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 8030 transitions. [2021-06-01 17:32:59,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:32:59,936 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:32:59,936 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:32:59,937 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-06-01 17:32:59,937 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:32:59,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:32:59,937 INFO L82 PathProgramCache]: Analyzing trace with hash 589520221, now seen corresponding path program 108 times [2021-06-01 17:32:59,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:32:59,937 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925971817] [2021-06-01 17:32:59,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:32:59,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:00,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:00,025 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:00,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925971817] [2021-06-01 17:33:00,025 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925971817] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:00,025 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:00,025 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:00,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267479438] [2021-06-01 17:33:00,025 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:00,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:00,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:00,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:00,025 INFO L87 Difference]: Start difference. First operand 1995 states and 8030 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:00,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:00,079 INFO L93 Difference]: Finished difference Result 4569 states and 17466 transitions. [2021-06-01 17:33:00,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:00,079 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:00,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:00,087 INFO L225 Difference]: With dead ends: 4569 [2021-06-01 17:33:00,088 INFO L226 Difference]: Without dead ends: 4142 [2021-06-01 17:33:00,088 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 88.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:00,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4142 states. [2021-06-01 17:33:00,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4142 to 1886. [2021-06-01 17:33:00,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1886 states, 1885 states have (on average 4.064190981432361) internal successors, (7661), 1885 states have internal predecessors, (7661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:00,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 7661 transitions. [2021-06-01 17:33:00,137 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 7661 transitions. Word has length 25 [2021-06-01 17:33:00,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:00,138 INFO L482 AbstractCegarLoop]: Abstraction has 1886 states and 7661 transitions. [2021-06-01 17:33:00,138 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:00,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 7661 transitions. [2021-06-01 17:33:00,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:00,140 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:00,140 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:00,140 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-06-01 17:33:00,140 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:00,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:00,141 INFO L82 PathProgramCache]: Analyzing trace with hash 682073851, now seen corresponding path program 109 times [2021-06-01 17:33:00,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:00,141 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005878717] [2021-06-01 17:33:00,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:00,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:00,224 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:00,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005878717] [2021-06-01 17:33:00,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005878717] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:00,224 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:00,225 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:00,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985348219] [2021-06-01 17:33:00,225 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:00,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:00,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:00,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:00,225 INFO L87 Difference]: Start difference. First operand 1886 states and 7661 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:00,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:00,291 INFO L93 Difference]: Finished difference Result 4344 states and 16652 transitions. [2021-06-01 17:33:00,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:00,291 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:00,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:00,299 INFO L225 Difference]: With dead ends: 4344 [2021-06-01 17:33:00,300 INFO L226 Difference]: Without dead ends: 4059 [2021-06-01 17:33:00,300 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:00,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4059 states. [2021-06-01 17:33:00,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4059 to 1944. [2021-06-01 17:33:00,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1944 states, 1943 states have (on average 4.054554812146166) internal successors, (7878), 1943 states have internal predecessors, (7878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:00,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1944 states to 1944 states and 7878 transitions. [2021-06-01 17:33:00,365 INFO L78 Accepts]: Start accepts. Automaton has 1944 states and 7878 transitions. Word has length 25 [2021-06-01 17:33:00,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:00,365 INFO L482 AbstractCegarLoop]: Abstraction has 1944 states and 7878 transitions. [2021-06-01 17:33:00,365 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:00,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1944 states and 7878 transitions. [2021-06-01 17:33:00,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:00,368 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:00,368 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:00,368 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-06-01 17:33:00,368 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:00,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:00,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1874540283, now seen corresponding path program 110 times [2021-06-01 17:33:00,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:00,368 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530077436] [2021-06-01 17:33:00,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:00,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:00,455 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:00,455 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530077436] [2021-06-01 17:33:00,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530077436] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:00,455 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:00,455 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:00,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332906987] [2021-06-01 17:33:00,456 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:00,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:00,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:00,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:00,456 INFO L87 Difference]: Start difference. First operand 1944 states and 7878 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:00,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:00,522 INFO L93 Difference]: Finished difference Result 4306 states and 16471 transitions. [2021-06-01 17:33:00,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:00,522 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:00,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:00,531 INFO L225 Difference]: With dead ends: 4306 [2021-06-01 17:33:00,531 INFO L226 Difference]: Without dead ends: 4031 [2021-06-01 17:33:00,531 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:00,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4031 states. [2021-06-01 17:33:00,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4031 to 1916. [2021-06-01 17:33:00,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1916 states, 1915 states have (on average 4.060574412532637) internal successors, (7776), 1915 states have internal predecessors, (7776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:00,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 7776 transitions. [2021-06-01 17:33:00,582 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 7776 transitions. Word has length 25 [2021-06-01 17:33:00,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:00,582 INFO L482 AbstractCegarLoop]: Abstraction has 1916 states and 7776 transitions. [2021-06-01 17:33:00,582 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:00,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 7776 transitions. [2021-06-01 17:33:00,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:00,584 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:00,585 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:00,585 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-06-01 17:33:00,585 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:00,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:00,585 INFO L82 PathProgramCache]: Analyzing trace with hash -628507171, now seen corresponding path program 111 times [2021-06-01 17:33:00,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:00,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854587104] [2021-06-01 17:33:00,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:00,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:00,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:00,690 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:00,690 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854587104] [2021-06-01 17:33:00,691 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854587104] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:00,691 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:00,691 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:00,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55950445] [2021-06-01 17:33:00,691 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:00,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:00,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:00,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:00,691 INFO L87 Difference]: Start difference. First operand 1916 states and 7776 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:00,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:00,760 INFO L93 Difference]: Finished difference Result 4466 states and 17103 transitions. [2021-06-01 17:33:00,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:00,761 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:00,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:00,769 INFO L225 Difference]: With dead ends: 4466 [2021-06-01 17:33:00,769 INFO L226 Difference]: Without dead ends: 4181 [2021-06-01 17:33:00,770 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:00,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4181 states. [2021-06-01 17:33:00,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4181 to 1995. [2021-06-01 17:33:00,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1995 states, 1994 states have (on average 4.033600802407221) internal successors, (8043), 1994 states have internal predecessors, (8043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:00,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 8043 transitions. [2021-06-01 17:33:00,821 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 8043 transitions. Word has length 25 [2021-06-01 17:33:00,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:00,821 INFO L482 AbstractCegarLoop]: Abstraction has 1995 states and 8043 transitions. [2021-06-01 17:33:00,821 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:00,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 8043 transitions. [2021-06-01 17:33:00,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:00,824 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:00,824 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:00,824 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-06-01 17:33:00,824 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:00,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:00,825 INFO L82 PathProgramCache]: Analyzing trace with hash -614287621, now seen corresponding path program 112 times [2021-06-01 17:33:00,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:00,825 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090250829] [2021-06-01 17:33:00,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:00,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:00,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:00,905 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:00,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090250829] [2021-06-01 17:33:00,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090250829] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:00,905 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:00,906 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:00,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552823721] [2021-06-01 17:33:00,906 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:00,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:00,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:00,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:00,906 INFO L87 Difference]: Start difference. First operand 1995 states and 8043 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:00,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:00,962 INFO L93 Difference]: Finished difference Result 4499 states and 17170 transitions. [2021-06-01 17:33:00,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:00,963 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:00,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:00,971 INFO L225 Difference]: With dead ends: 4499 [2021-06-01 17:33:00,971 INFO L226 Difference]: Without dead ends: 4102 [2021-06-01 17:33:00,971 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:00,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4102 states. [2021-06-01 17:33:01,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4102 to 1916. [2021-06-01 17:33:01,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1916 states, 1915 states have (on average 4.04490861618799) internal successors, (7746), 1915 states have internal predecessors, (7746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:01,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 7746 transitions. [2021-06-01 17:33:01,022 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 7746 transitions. Word has length 25 [2021-06-01 17:33:01,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:01,022 INFO L482 AbstractCegarLoop]: Abstraction has 1916 states and 7746 transitions. [2021-06-01 17:33:01,022 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:01,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 7746 transitions. [2021-06-01 17:33:01,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:01,025 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:01,025 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:01,025 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-06-01 17:33:01,025 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:01,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:01,025 INFO L82 PathProgramCache]: Analyzing trace with hash 337940219, now seen corresponding path program 113 times [2021-06-01 17:33:01,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:01,026 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497189070] [2021-06-01 17:33:01,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:01,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:01,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:01,128 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:01,128 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497189070] [2021-06-01 17:33:01,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497189070] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:01,128 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:01,128 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:01,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596288990] [2021-06-01 17:33:01,128 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:01,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:01,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:01,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:01,129 INFO L87 Difference]: Start difference. First operand 1916 states and 7746 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:01,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:01,199 INFO L93 Difference]: Finished difference Result 4355 states and 16633 transitions. [2021-06-01 17:33:01,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:01,199 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:01,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:01,208 INFO L225 Difference]: With dead ends: 4355 [2021-06-01 17:33:01,208 INFO L226 Difference]: Without dead ends: 4108 [2021-06-01 17:33:01,208 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:01,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4108 states. [2021-06-01 17:33:01,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4108 to 1960. [2021-06-01 17:33:01,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1960 states, 1959 states have (on average 4.031648800408371) internal successors, (7898), 1959 states have internal predecessors, (7898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:01,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1960 states to 1960 states and 7898 transitions. [2021-06-01 17:33:01,258 INFO L78 Accepts]: Start accepts. Automaton has 1960 states and 7898 transitions. Word has length 25 [2021-06-01 17:33:01,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:01,258 INFO L482 AbstractCegarLoop]: Abstraction has 1960 states and 7898 transitions. [2021-06-01 17:33:01,258 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:01,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1960 states and 7898 transitions. [2021-06-01 17:33:01,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:01,261 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:01,261 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:01,261 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-06-01 17:33:01,261 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:01,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:01,261 INFO L82 PathProgramCache]: Analyzing trace with hash -731578787, now seen corresponding path program 114 times [2021-06-01 17:33:01,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:01,262 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404020044] [2021-06-01 17:33:01,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:01,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:01,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:01,372 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:01,372 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404020044] [2021-06-01 17:33:01,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404020044] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:01,373 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:01,373 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:01,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777101014] [2021-06-01 17:33:01,373 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:01,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:01,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:01,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:01,373 INFO L87 Difference]: Start difference. First operand 1960 states and 7898 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:01,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:01,442 INFO L93 Difference]: Finished difference Result 4426 states and 16872 transitions. [2021-06-01 17:33:01,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:01,442 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:01,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:01,453 INFO L225 Difference]: With dead ends: 4426 [2021-06-01 17:33:01,453 INFO L226 Difference]: Without dead ends: 4034 [2021-06-01 17:33:01,453 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:01,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4034 states. [2021-06-01 17:33:01,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4034 to 1886. [2021-06-01 17:33:01,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1886 states, 1885 states have (on average 4.0562334217506635) internal successors, (7646), 1885 states have internal predecessors, (7646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:01,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 7646 transitions. [2021-06-01 17:33:01,507 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 7646 transitions. Word has length 25 [2021-06-01 17:33:01,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:01,507 INFO L482 AbstractCegarLoop]: Abstraction has 1886 states and 7646 transitions. [2021-06-01 17:33:01,507 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:01,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 7646 transitions. [2021-06-01 17:33:01,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:01,510 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:01,510 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:01,510 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-06-01 17:33:01,510 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:01,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:01,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1654470361, now seen corresponding path program 115 times [2021-06-01 17:33:01,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:01,510 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286360916] [2021-06-01 17:33:01,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:01,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:01,590 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:01,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286360916] [2021-06-01 17:33:01,590 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286360916] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:01,590 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:01,590 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:01,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410198750] [2021-06-01 17:33:01,590 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:01,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:01,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:01,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:01,591 INFO L87 Difference]: Start difference. First operand 1886 states and 7646 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:01,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:01,663 INFO L93 Difference]: Finished difference Result 4313 states and 16543 transitions. [2021-06-01 17:33:01,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:01,664 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:01,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:01,672 INFO L225 Difference]: With dead ends: 4313 [2021-06-01 17:33:01,672 INFO L226 Difference]: Without dead ends: 4030 [2021-06-01 17:33:01,672 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:01,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4030 states. [2021-06-01 17:33:01,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4030 to 1936. [2021-06-01 17:33:01,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1936 states, 1935 states have (on average 4.0490956072351425) internal successors, (7835), 1935 states have internal predecessors, (7835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:01,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1936 states to 1936 states and 7835 transitions. [2021-06-01 17:33:01,722 INFO L78 Accepts]: Start accepts. Automaton has 1936 states and 7835 transitions. Word has length 25 [2021-06-01 17:33:01,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:01,722 INFO L482 AbstractCegarLoop]: Abstraction has 1936 states and 7835 transitions. [2021-06-01 17:33:01,722 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:01,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1936 states and 7835 transitions. [2021-06-01 17:33:01,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:01,725 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:01,725 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:01,725 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-06-01 17:33:01,725 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:01,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:01,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1559434309, now seen corresponding path program 116 times [2021-06-01 17:33:01,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:01,725 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112701895] [2021-06-01 17:33:01,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:01,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:01,821 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:01,821 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112701895] [2021-06-01 17:33:01,821 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112701895] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:01,821 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:01,821 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:01,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778141991] [2021-06-01 17:33:01,821 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:01,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:01,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:01,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:01,822 INFO L87 Difference]: Start difference. First operand 1936 states and 7835 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:01,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:01,894 INFO L93 Difference]: Finished difference Result 4277 states and 16367 transitions. [2021-06-01 17:33:01,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:01,894 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:01,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:01,902 INFO L225 Difference]: With dead ends: 4277 [2021-06-01 17:33:01,902 INFO L226 Difference]: Without dead ends: 4002 [2021-06-01 17:33:01,903 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:01,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4002 states. [2021-06-01 17:33:01,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4002 to 1908. [2021-06-01 17:33:01,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1908 states, 1907 states have (on average 4.055060304142632) internal successors, (7733), 1907 states have internal predecessors, (7733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:01,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1908 states to 1908 states and 7733 transitions. [2021-06-01 17:33:01,952 INFO L78 Accepts]: Start accepts. Automaton has 1908 states and 7733 transitions. Word has length 25 [2021-06-01 17:33:01,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:01,952 INFO L482 AbstractCegarLoop]: Abstraction has 1908 states and 7733 transitions. [2021-06-01 17:33:01,952 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:01,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1908 states and 7733 transitions. [2021-06-01 17:33:01,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:01,955 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:01,955 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:01,955 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-06-01 17:33:01,955 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:01,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:01,955 INFO L82 PathProgramCache]: Analyzing trace with hash 343889339, now seen corresponding path program 117 times [2021-06-01 17:33:01,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:01,955 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146980841] [2021-06-01 17:33:01,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:01,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:02,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:02,040 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:02,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146980841] [2021-06-01 17:33:02,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146980841] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:02,040 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:02,040 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:02,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564356331] [2021-06-01 17:33:02,040 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:02,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:02,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:02,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:02,041 INFO L87 Difference]: Start difference. First operand 1908 states and 7733 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:02,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:02,111 INFO L93 Difference]: Finished difference Result 4418 states and 16943 transitions. [2021-06-01 17:33:02,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:02,111 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:02,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:02,120 INFO L225 Difference]: With dead ends: 4418 [2021-06-01 17:33:02,120 INFO L226 Difference]: Without dead ends: 4135 [2021-06-01 17:33:02,120 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:02,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4135 states. [2021-06-01 17:33:02,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4135 to 1970. [2021-06-01 17:33:02,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1970 states, 1969 states have (on average 4.037582529202641) internal successors, (7950), 1969 states have internal predecessors, (7950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:02,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1970 states to 1970 states and 7950 transitions. [2021-06-01 17:33:02,173 INFO L78 Accepts]: Start accepts. Automaton has 1970 states and 7950 transitions. Word has length 25 [2021-06-01 17:33:02,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:02,173 INFO L482 AbstractCegarLoop]: Abstraction has 1970 states and 7950 transitions. [2021-06-01 17:33:02,173 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:02,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1970 states and 7950 transitions. [2021-06-01 17:33:02,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:02,176 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:02,176 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:02,176 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-06-01 17:33:02,176 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:02,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:02,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1443492421, now seen corresponding path program 118 times [2021-06-01 17:33:02,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:02,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231426456] [2021-06-01 17:33:02,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:02,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:02,276 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:02,276 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231426456] [2021-06-01 17:33:02,276 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231426456] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:02,276 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:02,276 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:02,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775378877] [2021-06-01 17:33:02,276 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:02,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:02,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:02,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:02,277 INFO L87 Difference]: Start difference. First operand 1970 states and 7950 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:02,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:02,338 INFO L93 Difference]: Finished difference Result 4453 states and 17016 transitions. [2021-06-01 17:33:02,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:02,338 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:02,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:02,346 INFO L225 Difference]: With dead ends: 4453 [2021-06-01 17:33:02,346 INFO L226 Difference]: Without dead ends: 4073 [2021-06-01 17:33:02,347 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:02,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4073 states. [2021-06-01 17:33:02,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4073 to 1908. [2021-06-01 17:33:02,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1908 states, 1907 states have (on average 4.043523859465129) internal successors, (7711), 1907 states have internal predecessors, (7711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:02,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1908 states to 1908 states and 7711 transitions. [2021-06-01 17:33:02,397 INFO L78 Accepts]: Start accepts. Automaton has 1908 states and 7711 transitions. Word has length 25 [2021-06-01 17:33:02,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:02,397 INFO L482 AbstractCegarLoop]: Abstraction has 1908 states and 7711 transitions. [2021-06-01 17:33:02,397 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:02,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1908 states and 7711 transitions. [2021-06-01 17:33:02,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:02,400 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:02,400 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:02,400 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-06-01 17:33:02,400 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:02,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:02,400 INFO L82 PathProgramCache]: Analyzing trace with hash 731894301, now seen corresponding path program 119 times [2021-06-01 17:33:02,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:02,400 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038127868] [2021-06-01 17:33:02,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:02,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:02,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:02,495 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:02,495 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038127868] [2021-06-01 17:33:02,495 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038127868] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:02,495 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:02,495 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:02,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037348678] [2021-06-01 17:33:02,495 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:02,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:02,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:02,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:02,496 INFO L87 Difference]: Start difference. First operand 1908 states and 7711 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:02,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:02,601 INFO L93 Difference]: Finished difference Result 4328 states and 16542 transitions. [2021-06-01 17:33:02,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:02,601 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:02,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:02,612 INFO L225 Difference]: With dead ends: 4328 [2021-06-01 17:33:02,612 INFO L226 Difference]: Without dead ends: 4081 [2021-06-01 17:33:02,612 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:02,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4081 states. [2021-06-01 17:33:02,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4081 to 1952. [2021-06-01 17:33:02,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1952 states, 1951 states have (on average 4.030240902101486) internal successors, (7863), 1951 states have internal predecessors, (7863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:02,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 7863 transitions. [2021-06-01 17:33:02,672 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 7863 transitions. Word has length 25 [2021-06-01 17:33:02,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:02,672 INFO L482 AbstractCegarLoop]: Abstraction has 1952 states and 7863 transitions. [2021-06-01 17:33:02,672 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:02,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 7863 transitions. [2021-06-01 17:33:02,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:02,674 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:02,675 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:02,675 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-06-01 17:33:02,675 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:02,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:02,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1936543483, now seen corresponding path program 120 times [2021-06-01 17:33:02,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:02,675 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002205891] [2021-06-01 17:33:02,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:02,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:02,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:02,769 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:02,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002205891] [2021-06-01 17:33:02,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002205891] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:02,769 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:02,769 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:02,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188778418] [2021-06-01 17:33:02,770 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:02,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:02,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:02,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:02,770 INFO L87 Difference]: Start difference. First operand 1952 states and 7863 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:02,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:02,849 INFO L93 Difference]: Finished difference Result 4399 states and 16781 transitions. [2021-06-01 17:33:02,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:02,849 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:02,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:02,857 INFO L225 Difference]: With dead ends: 4399 [2021-06-01 17:33:02,857 INFO L226 Difference]: Without dead ends: 3982 [2021-06-01 17:33:02,858 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:02,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3982 states. [2021-06-01 17:33:02,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3982 to 1853. [2021-06-01 17:33:02,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1853 states, 1852 states have (on average 4.08585313174946) internal successors, (7567), 1852 states have internal predecessors, (7567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:02,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1853 states to 1853 states and 7567 transitions. [2021-06-01 17:33:02,907 INFO L78 Accepts]: Start accepts. Automaton has 1853 states and 7567 transitions. Word has length 25 [2021-06-01 17:33:02,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:02,907 INFO L482 AbstractCegarLoop]: Abstraction has 1853 states and 7567 transitions. [2021-06-01 17:33:02,907 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:02,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1853 states and 7567 transitions. [2021-06-01 17:33:02,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:02,909 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:02,909 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:02,909 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-06-01 17:33:02,909 INFO L430 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:02,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:02,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1743117179, now seen corresponding path program 121 times [2021-06-01 17:33:02,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:02,910 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436964985] [2021-06-01 17:33:02,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:02,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:03,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:03,015 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:03,015 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436964985] [2021-06-01 17:33:03,015 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436964985] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:03,015 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:03,015 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:03,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257447412] [2021-06-01 17:33:03,016 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:03,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:03,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:03,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:03,016 INFO L87 Difference]: Start difference. First operand 1853 states and 7567 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:03,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:03,073 INFO L93 Difference]: Finished difference Result 4322 states and 16583 transitions. [2021-06-01 17:33:03,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:03,073 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:03,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:03,081 INFO L225 Difference]: With dead ends: 4322 [2021-06-01 17:33:03,081 INFO L226 Difference]: Without dead ends: 4075 [2021-06-01 17:33:03,082 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:03,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4075 states. [2021-06-01 17:33:03,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4075 to 1927. [2021-06-01 17:33:03,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1927 states, 1926 states have (on average 4.074766355140187) internal successors, (7848), 1926 states have internal predecessors, (7848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:03,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1927 states to 1927 states and 7848 transitions. [2021-06-01 17:33:03,132 INFO L78 Accepts]: Start accepts. Automaton has 1927 states and 7848 transitions. Word has length 25 [2021-06-01 17:33:03,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:03,132 INFO L482 AbstractCegarLoop]: Abstraction has 1927 states and 7848 transitions. [2021-06-01 17:33:03,132 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:03,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1927 states and 7848 transitions. [2021-06-01 17:33:03,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:03,135 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:03,135 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:03,135 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-06-01 17:33:03,135 INFO L430 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:03,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:03,135 INFO L82 PathProgramCache]: Analyzing trace with hash 111170013, now seen corresponding path program 122 times [2021-06-01 17:33:03,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:03,135 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001729288] [2021-06-01 17:33:03,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:03,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:03,232 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:03,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001729288] [2021-06-01 17:33:03,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001729288] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:03,232 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:03,232 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:03,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854897837] [2021-06-01 17:33:03,233 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:03,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:03,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:03,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:03,233 INFO L87 Difference]: Start difference. First operand 1927 states and 7848 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:03,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:03,300 INFO L93 Difference]: Finished difference Result 4393 states and 16822 transitions. [2021-06-01 17:33:03,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:03,300 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:03,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:03,308 INFO L225 Difference]: With dead ends: 4393 [2021-06-01 17:33:03,308 INFO L226 Difference]: Without dead ends: 4031 [2021-06-01 17:33:03,308 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:03,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4031 states. [2021-06-01 17:33:03,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4031 to 1883. [2021-06-01 17:33:03,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1883 states, 1882 states have (on average 4.077577045696068) internal successors, (7674), 1882 states have internal predecessors, (7674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:03,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 7674 transitions. [2021-06-01 17:33:03,368 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 7674 transitions. Word has length 25 [2021-06-01 17:33:03,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:03,368 INFO L482 AbstractCegarLoop]: Abstraction has 1883 states and 7674 transitions. [2021-06-01 17:33:03,368 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:03,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 7674 transitions. [2021-06-01 17:33:03,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:03,371 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:03,371 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:03,371 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-06-01 17:33:03,372 INFO L430 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:03,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:03,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1306721639, now seen corresponding path program 123 times [2021-06-01 17:33:03,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:03,372 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529086680] [2021-06-01 17:33:03,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:03,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:03,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:03,473 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:03,473 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529086680] [2021-06-01 17:33:03,473 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529086680] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:03,473 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:03,473 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:03,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452697886] [2021-06-01 17:33:03,473 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:03,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:03,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:03,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:03,474 INFO L87 Difference]: Start difference. First operand 1883 states and 7674 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:03,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:03,538 INFO L93 Difference]: Finished difference Result 4273 states and 16383 transitions. [2021-06-01 17:33:03,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:03,539 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:03,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:03,547 INFO L225 Difference]: With dead ends: 4273 [2021-06-01 17:33:03,547 INFO L226 Difference]: Without dead ends: 4026 [2021-06-01 17:33:03,547 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:03,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4026 states. [2021-06-01 17:33:03,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 1911. [2021-06-01 17:33:03,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1911 states, 1910 states have (on average 4.063874345549738) internal successors, (7762), 1910 states have internal predecessors, (7762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:03,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1911 states to 1911 states and 7762 transitions. [2021-06-01 17:33:03,598 INFO L78 Accepts]: Start accepts. Automaton has 1911 states and 7762 transitions. Word has length 25 [2021-06-01 17:33:03,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:03,598 INFO L482 AbstractCegarLoop]: Abstraction has 1911 states and 7762 transitions. [2021-06-01 17:33:03,598 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:03,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1911 states and 7762 transitions. [2021-06-01 17:33:03,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:03,601 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:03,601 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:03,601 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-06-01 17:33:03,601 INFO L430 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:03,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:03,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1398310907, now seen corresponding path program 124 times [2021-06-01 17:33:03,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:03,602 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638669182] [2021-06-01 17:33:03,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:03,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:03,712 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:03,712 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638669182] [2021-06-01 17:33:03,712 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638669182] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:03,712 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:03,712 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:03,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180742107] [2021-06-01 17:33:03,712 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:03,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:03,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:03,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:03,713 INFO L87 Difference]: Start difference. First operand 1911 states and 7762 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:03,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:03,792 INFO L93 Difference]: Finished difference Result 4311 states and 16508 transitions. [2021-06-01 17:33:03,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:03,792 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:03,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:03,801 INFO L225 Difference]: With dead ends: 4311 [2021-06-01 17:33:03,801 INFO L226 Difference]: Without dead ends: 3998 [2021-06-01 17:33:03,801 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:03,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3998 states. [2021-06-01 17:33:03,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3998 to 1883. [2021-06-01 17:33:03,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1883 states, 1882 states have (on average 4.070138150903294) internal successors, (7660), 1882 states have internal predecessors, (7660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:03,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 7660 transitions. [2021-06-01 17:33:03,852 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 7660 transitions. Word has length 25 [2021-06-01 17:33:03,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:03,852 INFO L482 AbstractCegarLoop]: Abstraction has 1883 states and 7660 transitions. [2021-06-01 17:33:03,852 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:03,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 7660 transitions. [2021-06-01 17:33:03,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:03,855 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:03,855 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:03,855 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-06-01 17:33:03,855 INFO L430 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:03,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:03,855 INFO L82 PathProgramCache]: Analyzing trace with hash 760147421, now seen corresponding path program 125 times [2021-06-01 17:33:03,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:03,856 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071368982] [2021-06-01 17:33:03,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:03,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:03,943 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:03,943 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071368982] [2021-06-01 17:33:03,943 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071368982] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:03,943 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:03,943 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:03,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635369595] [2021-06-01 17:33:03,944 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:03,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:03,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:03,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:03,944 INFO L87 Difference]: Start difference. First operand 1883 states and 7660 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:04,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:04,022 INFO L93 Difference]: Finished difference Result 4433 states and 16987 transitions. [2021-06-01 17:33:04,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:04,022 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:04,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:04,031 INFO L225 Difference]: With dead ends: 4433 [2021-06-01 17:33:04,031 INFO L226 Difference]: Without dead ends: 4148 [2021-06-01 17:33:04,031 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:04,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2021-06-01 17:33:04,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 1962. [2021-06-01 17:33:04,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1962 states, 1961 states have (on average 4.042325344212137) internal successors, (7927), 1961 states have internal predecessors, (7927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:04,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 7927 transitions. [2021-06-01 17:33:04,085 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 7927 transitions. Word has length 25 [2021-06-01 17:33:04,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:04,085 INFO L482 AbstractCegarLoop]: Abstraction has 1962 states and 7927 transitions. [2021-06-01 17:33:04,085 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:04,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 7927 transitions. [2021-06-01 17:33:04,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:04,088 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:04,088 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:04,088 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-06-01 17:33:04,088 INFO L430 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:04,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:04,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1058200379, now seen corresponding path program 126 times [2021-06-01 17:33:04,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:04,089 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810749966] [2021-06-01 17:33:04,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:04,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:04,177 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:04,177 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810749966] [2021-06-01 17:33:04,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810749966] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:04,178 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:04,178 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:04,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818591860] [2021-06-01 17:33:04,178 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:04,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:04,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:04,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:04,178 INFO L87 Difference]: Start difference. First operand 1962 states and 7927 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:04,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:04,240 INFO L93 Difference]: Finished difference Result 4466 states and 17054 transitions. [2021-06-01 17:33:04,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:04,240 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:04,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:04,249 INFO L225 Difference]: With dead ends: 4466 [2021-06-01 17:33:04,249 INFO L226 Difference]: Without dead ends: 4039 [2021-06-01 17:33:04,249 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:04,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4039 states. [2021-06-01 17:33:04,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4039 to 1853. [2021-06-01 17:33:04,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1853 states, 1852 states have (on average 4.077753779697624) internal successors, (7552), 1852 states have internal predecessors, (7552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:04,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1853 states to 1853 states and 7552 transitions. [2021-06-01 17:33:04,299 INFO L78 Accepts]: Start accepts. Automaton has 1853 states and 7552 transitions. Word has length 25 [2021-06-01 17:33:04,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:04,300 INFO L482 AbstractCegarLoop]: Abstraction has 1853 states and 7552 transitions. [2021-06-01 17:33:04,300 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:04,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1853 states and 7552 transitions. [2021-06-01 17:33:04,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:04,302 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:04,302 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:04,302 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-06-01 17:33:04,302 INFO L430 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:04,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:04,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1340630427, now seen corresponding path program 127 times [2021-06-01 17:33:04,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:04,303 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913686713] [2021-06-01 17:33:04,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:04,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:04,400 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:04,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913686713] [2021-06-01 17:33:04,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913686713] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:04,401 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:04,401 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:04,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658261742] [2021-06-01 17:33:04,401 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:04,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:04,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:04,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:04,401 INFO L87 Difference]: Start difference. First operand 1853 states and 7552 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:04,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:04,455 INFO L93 Difference]: Finished difference Result 4295 states and 16484 transitions. [2021-06-01 17:33:04,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:04,455 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:04,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:04,464 INFO L225 Difference]: With dead ends: 4295 [2021-06-01 17:33:04,464 INFO L226 Difference]: Without dead ends: 4048 [2021-06-01 17:33:04,464 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:04,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4048 states. [2021-06-01 17:33:04,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4048 to 1919. [2021-06-01 17:33:04,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1919 states, 1918 states have (on average 4.069343065693431) internal successors, (7805), 1918 states have internal predecessors, (7805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:04,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1919 states to 1919 states and 7805 transitions. [2021-06-01 17:33:04,515 INFO L78 Accepts]: Start accepts. Automaton has 1919 states and 7805 transitions. Word has length 25 [2021-06-01 17:33:04,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:04,516 INFO L482 AbstractCegarLoop]: Abstraction has 1919 states and 7805 transitions. [2021-06-01 17:33:04,516 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:04,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1919 states and 7805 transitions. [2021-06-01 17:33:04,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:04,518 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:04,518 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:04,518 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-06-01 17:33:04,519 INFO L430 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:04,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:04,519 INFO L82 PathProgramCache]: Analyzing trace with hash -291316739, now seen corresponding path program 128 times [2021-06-01 17:33:04,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:04,519 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720811021] [2021-06-01 17:33:04,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:04,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:04,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:04,618 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:04,618 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720811021] [2021-06-01 17:33:04,618 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720811021] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:04,618 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:04,618 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:04,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782683446] [2021-06-01 17:33:04,618 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:04,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:04,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:04,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:04,619 INFO L87 Difference]: Start difference. First operand 1919 states and 7805 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:04,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:04,673 INFO L93 Difference]: Finished difference Result 4366 states and 16723 transitions. [2021-06-01 17:33:04,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:04,673 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:04,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:04,682 INFO L225 Difference]: With dead ends: 4366 [2021-06-01 17:33:04,682 INFO L226 Difference]: Without dead ends: 4004 [2021-06-01 17:33:04,682 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:04,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4004 states. [2021-06-01 17:33:04,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4004 to 1875. [2021-06-01 17:33:04,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1875 states, 1874 states have (on average 4.072038420490928) internal successors, (7631), 1874 states have internal predecessors, (7631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:04,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1875 states to 1875 states and 7631 transitions. [2021-06-01 17:33:04,732 INFO L78 Accepts]: Start accepts. Automaton has 1875 states and 7631 transitions. Word has length 25 [2021-06-01 17:33:04,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:04,732 INFO L482 AbstractCegarLoop]: Abstraction has 1875 states and 7631 transitions. [2021-06-01 17:33:04,732 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:04,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1875 states and 7631 transitions. [2021-06-01 17:33:04,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:04,735 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:04,735 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:04,735 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-06-01 17:33:04,735 INFO L430 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:04,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:04,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1999850843, now seen corresponding path program 129 times [2021-06-01 17:33:04,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:04,735 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533982293] [2021-06-01 17:33:04,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:04,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:04,837 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:04,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533982293] [2021-06-01 17:33:04,837 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533982293] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:04,837 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:04,837 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:04,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121501458] [2021-06-01 17:33:04,838 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:04,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:04,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:04,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:04,838 INFO L87 Difference]: Start difference. First operand 1875 states and 7631 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:04,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:04,892 INFO L93 Difference]: Finished difference Result 4244 states and 16279 transitions. [2021-06-01 17:33:04,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:04,892 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:04,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:04,900 INFO L225 Difference]: With dead ends: 4244 [2021-06-01 17:33:04,900 INFO L226 Difference]: Without dead ends: 3997 [2021-06-01 17:33:04,900 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:04,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3997 states. [2021-06-01 17:33:04,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3997 to 1903. [2021-06-01 17:33:04,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1903 states, 1902 states have (on average 4.058359621451104) internal successors, (7719), 1902 states have internal predecessors, (7719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:04,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1903 states to 1903 states and 7719 transitions. [2021-06-01 17:33:04,950 INFO L78 Accepts]: Start accepts. Automaton has 1903 states and 7719 transitions. Word has length 25 [2021-06-01 17:33:04,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:04,950 INFO L482 AbstractCegarLoop]: Abstraction has 1903 states and 7719 transitions. [2021-06-01 17:33:04,950 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:04,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1903 states and 7719 transitions. [2021-06-01 17:33:04,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:04,953 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:04,953 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:04,953 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-06-01 17:33:04,953 INFO L430 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:04,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:04,954 INFO L82 PathProgramCache]: Analyzing trace with hash 430922301, now seen corresponding path program 130 times [2021-06-01 17:33:04,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:04,954 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679697354] [2021-06-01 17:33:04,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:05,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:05,055 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:05,055 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679697354] [2021-06-01 17:33:05,055 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679697354] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:05,055 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:05,055 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:05,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477709770] [2021-06-01 17:33:05,056 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:05,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:05,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:05,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:05,056 INFO L87 Difference]: Start difference. First operand 1903 states and 7719 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:05,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:05,144 INFO L93 Difference]: Finished difference Result 4280 states and 16399 transitions. [2021-06-01 17:33:05,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:05,145 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:05,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:05,153 INFO L225 Difference]: With dead ends: 4280 [2021-06-01 17:33:05,153 INFO L226 Difference]: Without dead ends: 3969 [2021-06-01 17:33:05,153 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 129.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:05,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3969 states. [2021-06-01 17:33:05,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3969 to 1875. [2021-06-01 17:33:05,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1875 states, 1874 states have (on average 4.064567769477055) internal successors, (7617), 1874 states have internal predecessors, (7617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:05,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1875 states to 1875 states and 7617 transitions. [2021-06-01 17:33:05,248 INFO L78 Accepts]: Start accepts. Automaton has 1875 states and 7617 transitions. Word has length 25 [2021-06-01 17:33:05,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:05,248 INFO L482 AbstractCegarLoop]: Abstraction has 1875 states and 7617 transitions. [2021-06-01 17:33:05,248 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:05,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1875 states and 7617 transitions. [2021-06-01 17:33:05,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:05,252 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:05,252 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:05,252 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-06-01 17:33:05,252 INFO L430 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:05,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:05,252 INFO L82 PathProgramCache]: Analyzing trace with hash -207241185, now seen corresponding path program 131 times [2021-06-01 17:33:05,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:05,252 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418746660] [2021-06-01 17:33:05,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:05,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:05,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:05,354 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:05,354 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418746660] [2021-06-01 17:33:05,354 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418746660] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:05,354 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:05,354 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:05,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036887049] [2021-06-01 17:33:05,354 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:05,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:05,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:05,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:05,355 INFO L87 Difference]: Start difference. First operand 1875 states and 7617 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:05,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:05,430 INFO L93 Difference]: Finished difference Result 4385 states and 16827 transitions. [2021-06-01 17:33:05,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:05,430 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:05,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:05,439 INFO L225 Difference]: With dead ends: 4385 [2021-06-01 17:33:05,439 INFO L226 Difference]: Without dead ends: 4102 [2021-06-01 17:33:05,439 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:05,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4102 states. [2021-06-01 17:33:05,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4102 to 1937. [2021-06-01 17:33:05,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1937 states, 1936 states have (on average 4.046487603305785) internal successors, (7834), 1936 states have internal predecessors, (7834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:05,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1937 states to 1937 states and 7834 transitions. [2021-06-01 17:33:05,493 INFO L78 Accepts]: Start accepts. Automaton has 1937 states and 7834 transitions. Word has length 25 [2021-06-01 17:33:05,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:05,493 INFO L482 AbstractCegarLoop]: Abstraction has 1937 states and 7834 transitions. [2021-06-01 17:33:05,493 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:05,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1937 states and 7834 transitions. [2021-06-01 17:33:05,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:05,496 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:05,496 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:05,496 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-06-01 17:33:05,496 INFO L430 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:05,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:05,496 INFO L82 PathProgramCache]: Analyzing trace with hash -560380675, now seen corresponding path program 132 times [2021-06-01 17:33:05,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:05,496 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854001856] [2021-06-01 17:33:05,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:05,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:05,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:05,605 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:05,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854001856] [2021-06-01 17:33:05,605 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854001856] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:05,605 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:05,605 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:05,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111191441] [2021-06-01 17:33:05,606 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:05,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:05,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:05,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:05,606 INFO L87 Difference]: Start difference. First operand 1937 states and 7834 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:05,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:05,660 INFO L93 Difference]: Finished difference Result 4420 states and 16900 transitions. [2021-06-01 17:33:05,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:05,661 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:05,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:05,669 INFO L225 Difference]: With dead ends: 4420 [2021-06-01 17:33:05,669 INFO L226 Difference]: Without dead ends: 4018 [2021-06-01 17:33:05,669 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:05,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4018 states. [2021-06-01 17:33:05,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4018 to 1853. [2021-06-01 17:33:05,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1853 states, 1852 states have (on average 4.0718142548596115) internal successors, (7541), 1852 states have internal predecessors, (7541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:05,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1853 states to 1853 states and 7541 transitions. [2021-06-01 17:33:05,717 INFO L78 Accepts]: Start accepts. Automaton has 1853 states and 7541 transitions. Word has length 25 [2021-06-01 17:33:05,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:05,718 INFO L482 AbstractCegarLoop]: Abstraction has 1853 states and 7541 transitions. [2021-06-01 17:33:05,718 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:05,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1853 states and 7541 transitions. [2021-06-01 17:33:05,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:05,724 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:05,725 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:05,725 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-06-01 17:33:05,725 INFO L430 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:05,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:05,725 INFO L82 PathProgramCache]: Analyzing trace with hash 909120761, now seen corresponding path program 133 times [2021-06-01 17:33:05,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:05,725 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739658047] [2021-06-01 17:33:05,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:05,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:05,843 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:05,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739658047] [2021-06-01 17:33:05,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739658047] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:05,844 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:05,844 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:05,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659531628] [2021-06-01 17:33:05,844 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:05,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:05,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:05,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:05,844 INFO L87 Difference]: Start difference. First operand 1853 states and 7541 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:05,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:05,905 INFO L93 Difference]: Finished difference Result 4173 states and 16017 transitions. [2021-06-01 17:33:05,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:05,905 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:05,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:05,913 INFO L225 Difference]: With dead ends: 4173 [2021-06-01 17:33:05,913 INFO L226 Difference]: Without dead ends: 3926 [2021-06-01 17:33:05,913 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:05,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3926 states. [2021-06-01 17:33:05,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3926 to 1895. [2021-06-01 17:33:05,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1895 states, 1894 states have (on average 4.0623020063357975) internal successors, (7694), 1894 states have internal predecessors, (7694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:05,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 7694 transitions. [2021-06-01 17:33:05,963 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 7694 transitions. Word has length 25 [2021-06-01 17:33:05,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:05,963 INFO L482 AbstractCegarLoop]: Abstraction has 1895 states and 7694 transitions. [2021-06-01 17:33:05,963 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:05,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 7694 transitions. [2021-06-01 17:33:05,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:05,968 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:05,968 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:05,968 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-06-01 17:33:05,969 INFO L430 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:05,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:05,969 INFO L82 PathProgramCache]: Analyzing trace with hash -680813989, now seen corresponding path program 134 times [2021-06-01 17:33:05,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:05,969 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209880063] [2021-06-01 17:33:05,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:05,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:06,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:06,063 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:06,063 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209880063] [2021-06-01 17:33:06,064 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209880063] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:06,064 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:06,064 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:06,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344788632] [2021-06-01 17:33:06,064 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:06,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:06,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:06,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:06,064 INFO L87 Difference]: Start difference. First operand 1895 states and 7694 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:06,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:06,131 INFO L93 Difference]: Finished difference Result 4211 states and 16142 transitions. [2021-06-01 17:33:06,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:06,131 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:06,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:06,139 INFO L225 Difference]: With dead ends: 4211 [2021-06-01 17:33:06,140 INFO L226 Difference]: Without dead ends: 3898 [2021-06-01 17:33:06,140 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:06,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3898 states. [2021-06-01 17:33:06,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3898 to 1867. [2021-06-01 17:33:06,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1867 states, 1866 states have (on average 4.068595927116827) internal successors, (7592), 1866 states have internal predecessors, (7592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:06,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1867 states to 1867 states and 7592 transitions. [2021-06-01 17:33:06,189 INFO L78 Accepts]: Start accepts. Automaton has 1867 states and 7592 transitions. Word has length 25 [2021-06-01 17:33:06,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:06,189 INFO L482 AbstractCegarLoop]: Abstraction has 1867 states and 7592 transitions. [2021-06-01 17:33:06,189 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:06,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1867 states and 7592 transitions. [2021-06-01 17:33:06,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:06,192 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:06,192 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:06,192 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-06-01 17:33:06,192 INFO L430 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:06,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:06,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1990183387, now seen corresponding path program 135 times [2021-06-01 17:33:06,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:06,192 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072631092] [2021-06-01 17:33:06,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:06,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:06,311 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:06,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072631092] [2021-06-01 17:33:06,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072631092] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:06,311 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:06,311 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:06,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338067305] [2021-06-01 17:33:06,311 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:06,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:06,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:06,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:06,311 INFO L87 Difference]: Start difference. First operand 1867 states and 7592 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:06,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:06,381 INFO L93 Difference]: Finished difference Result 4171 states and 15998 transitions. [2021-06-01 17:33:06,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:06,381 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:06,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:06,391 INFO L225 Difference]: With dead ends: 4171 [2021-06-01 17:33:06,391 INFO L226 Difference]: Without dead ends: 3924 [2021-06-01 17:33:06,391 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 120.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:06,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3924 states. [2021-06-01 17:33:06,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3924 to 1895. [2021-06-01 17:33:06,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1895 states, 1894 states have (on average 4.054910242872228) internal successors, (7680), 1894 states have internal predecessors, (7680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:06,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 7680 transitions. [2021-06-01 17:33:06,440 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 7680 transitions. Word has length 25 [2021-06-01 17:33:06,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:06,441 INFO L482 AbstractCegarLoop]: Abstraction has 1895 states and 7680 transitions. [2021-06-01 17:33:06,441 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:06,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 7680 transitions. [2021-06-01 17:33:06,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:06,443 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:06,443 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:06,443 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-06-01 17:33:06,443 INFO L430 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:06,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:06,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1296485925, now seen corresponding path program 136 times [2021-06-01 17:33:06,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:06,444 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291442638] [2021-06-01 17:33:06,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:06,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:06,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:06,551 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:06,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291442638] [2021-06-01 17:33:06,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291442638] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:06,551 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:06,551 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:06,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083003087] [2021-06-01 17:33:06,551 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:06,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:06,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:06,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:06,552 INFO L87 Difference]: Start difference. First operand 1895 states and 7680 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:06,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:06,619 INFO L93 Difference]: Finished difference Result 4207 states and 16118 transitions. [2021-06-01 17:33:06,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:06,619 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:06,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:06,627 INFO L225 Difference]: With dead ends: 4207 [2021-06-01 17:33:06,627 INFO L226 Difference]: Without dead ends: 3896 [2021-06-01 17:33:06,628 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:06,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3896 states. [2021-06-01 17:33:06,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3896 to 1867. [2021-06-01 17:33:06,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1867 states, 1866 states have (on average 4.061093247588424) internal successors, (7578), 1866 states have internal predecessors, (7578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:06,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1867 states to 1867 states and 7578 transitions. [2021-06-01 17:33:06,676 INFO L78 Accepts]: Start accepts. Automaton has 1867 states and 7578 transitions. Word has length 25 [2021-06-01 17:33:06,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:06,676 INFO L482 AbstractCegarLoop]: Abstraction has 1867 states and 7578 transitions. [2021-06-01 17:33:06,676 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:06,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1867 states and 7578 transitions. [2021-06-01 17:33:06,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:06,679 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:06,679 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:06,679 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-06-01 17:33:06,679 INFO L430 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:06,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:06,679 INFO L82 PathProgramCache]: Analyzing trace with hash -887621955, now seen corresponding path program 137 times [2021-06-01 17:33:06,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:06,679 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474641650] [2021-06-01 17:33:06,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:06,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:06,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:06,775 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:06,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474641650] [2021-06-01 17:33:06,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474641650] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:06,775 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:06,775 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:06,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77231787] [2021-06-01 17:33:06,775 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:06,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:06,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:06,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:06,776 INFO L87 Difference]: Start difference. First operand 1867 states and 7578 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:06,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:06,843 INFO L93 Difference]: Finished difference Result 4265 states and 16373 transitions. [2021-06-01 17:33:06,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:06,843 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:06,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:06,852 INFO L225 Difference]: With dead ends: 4265 [2021-06-01 17:33:06,852 INFO L226 Difference]: Without dead ends: 3980 [2021-06-01 17:33:06,852 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:06,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3980 states. [2021-06-01 17:33:06,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3980 to 1913. [2021-06-01 17:33:06,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1913 states, 1912 states have (on average 4.043410041841004) internal successors, (7731), 1912 states have internal predecessors, (7731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:06,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1913 states to 1913 states and 7731 transitions. [2021-06-01 17:33:06,902 INFO L78 Accepts]: Start accepts. Automaton has 1913 states and 7731 transitions. Word has length 25 [2021-06-01 17:33:06,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:06,902 INFO L482 AbstractCegarLoop]: Abstraction has 1913 states and 7731 transitions. [2021-06-01 17:33:06,902 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:06,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1913 states and 7731 transitions. [2021-06-01 17:33:06,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:06,905 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:06,905 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:06,905 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-06-01 17:33:06,905 INFO L430 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:06,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:06,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1364008347, now seen corresponding path program 138 times [2021-06-01 17:33:06,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:06,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206712819] [2021-06-01 17:33:06,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:06,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:06,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:06,996 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:06,996 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206712819] [2021-06-01 17:33:06,996 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206712819] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:06,996 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:06,996 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:06,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031822741] [2021-06-01 17:33:06,996 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:06,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:06,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:06,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:06,997 INFO L87 Difference]: Start difference. First operand 1913 states and 7731 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:07,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:07,072 INFO L93 Difference]: Finished difference Result 4263 states and 16322 transitions. [2021-06-01 17:33:07,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:07,073 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:07,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:07,081 INFO L225 Difference]: With dead ends: 4263 [2021-06-01 17:33:07,081 INFO L226 Difference]: Without dead ends: 3920 [2021-06-01 17:33:07,081 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:07,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3920 states. [2021-06-01 17:33:07,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3920 to 1853. [2021-06-01 17:33:07,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1853 states, 1852 states have (on average 4.068034557235421) internal successors, (7534), 1852 states have internal predecessors, (7534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:07,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1853 states to 1853 states and 7534 transitions. [2021-06-01 17:33:07,130 INFO L78 Accepts]: Start accepts. Automaton has 1853 states and 7534 transitions. Word has length 25 [2021-06-01 17:33:07,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:07,130 INFO L482 AbstractCegarLoop]: Abstraction has 1853 states and 7534 transitions. [2021-06-01 17:33:07,130 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:07,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1853 states and 7534 transitions. [2021-06-01 17:33:07,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:07,133 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:07,133 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:07,133 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-06-01 17:33:07,133 INFO L430 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:07,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:07,133 INFO L82 PathProgramCache]: Analyzing trace with hash 17591327, now seen corresponding path program 139 times [2021-06-01 17:33:07,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:07,134 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934601498] [2021-06-01 17:33:07,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:07,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:07,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:07,219 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:07,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934601498] [2021-06-01 17:33:07,220 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934601498] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:07,220 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:07,220 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:07,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823707167] [2021-06-01 17:33:07,220 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:07,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:07,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:07,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:07,220 INFO L87 Difference]: Start difference. First operand 1853 states and 7534 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:07,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:07,288 INFO L93 Difference]: Finished difference Result 4454 states and 17136 transitions. [2021-06-01 17:33:07,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:07,288 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:07,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:07,297 INFO L225 Difference]: With dead ends: 4454 [2021-06-01 17:33:07,297 INFO L226 Difference]: Without dead ends: 4169 [2021-06-01 17:33:07,297 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:07,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4169 states. [2021-06-01 17:33:07,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4169 to 1946. [2021-06-01 17:33:07,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1946 states, 1945 states have (on average 4.052442159383033) internal successors, (7882), 1945 states have internal predecessors, (7882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:07,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1946 states to 1946 states and 7882 transitions. [2021-06-01 17:33:07,350 INFO L78 Accepts]: Start accepts. Automaton has 1946 states and 7882 transitions. Word has length 25 [2021-06-01 17:33:07,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:07,350 INFO L482 AbstractCegarLoop]: Abstraction has 1946 states and 7882 transitions. [2021-06-01 17:33:07,350 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:07,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1946 states and 7882 transitions. [2021-06-01 17:33:07,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:07,353 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:07,353 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:07,353 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-06-01 17:33:07,353 INFO L430 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:07,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:07,353 INFO L82 PathProgramCache]: Analyzing trace with hash -2025745667, now seen corresponding path program 140 times [2021-06-01 17:33:07,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:07,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171311458] [2021-06-01 17:33:07,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:07,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:07,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:07,438 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:07,438 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171311458] [2021-06-01 17:33:07,438 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171311458] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:07,438 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:07,438 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:07,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444492760] [2021-06-01 17:33:07,438 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:07,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:07,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:07,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:07,439 INFO L87 Difference]: Start difference. First operand 1946 states and 7882 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:07,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:07,506 INFO L93 Difference]: Finished difference Result 4452 states and 17085 transitions. [2021-06-01 17:33:07,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:07,506 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:07,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:07,514 INFO L225 Difference]: With dead ends: 4452 [2021-06-01 17:33:07,514 INFO L226 Difference]: Without dead ends: 4123 [2021-06-01 17:33:07,515 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:07,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4123 states. [2021-06-01 17:33:07,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4123 to 1900. [2021-06-01 17:33:07,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1900 states, 1899 states have (on average 4.057925223802001) internal successors, (7706), 1899 states have internal predecessors, (7706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:07,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1900 states to 1900 states and 7706 transitions. [2021-06-01 17:33:07,565 INFO L78 Accepts]: Start accepts. Automaton has 1900 states and 7706 transitions. Word has length 25 [2021-06-01 17:33:07,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:07,565 INFO L482 AbstractCegarLoop]: Abstraction has 1900 states and 7706 transitions. [2021-06-01 17:33:07,565 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:07,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1900 states and 7706 transitions. [2021-06-01 17:33:07,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:07,567 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:07,567 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:07,567 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-06-01 17:33:07,567 INFO L430 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:07,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:07,568 INFO L82 PathProgramCache]: Analyzing trace with hash -47042179, now seen corresponding path program 141 times [2021-06-01 17:33:07,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:07,568 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699609045] [2021-06-01 17:33:07,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:07,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:07,658 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:07,658 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699609045] [2021-06-01 17:33:07,658 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699609045] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:07,658 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:07,658 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:07,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152969838] [2021-06-01 17:33:07,658 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:07,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:07,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:07,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:07,659 INFO L87 Difference]: Start difference. First operand 1900 states and 7706 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:07,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:07,738 INFO L93 Difference]: Finished difference Result 4522 states and 17347 transitions. [2021-06-01 17:33:07,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:07,738 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:07,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:07,749 INFO L225 Difference]: With dead ends: 4522 [2021-06-01 17:33:07,749 INFO L226 Difference]: Without dead ends: 4237 [2021-06-01 17:33:07,749 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:07,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4237 states. [2021-06-01 17:33:07,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4237 to 1979. [2021-06-01 17:33:07,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1979 states, 1978 states have (on average 4.030839231547017) internal successors, (7973), 1978 states have internal predecessors, (7973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:07,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1979 states to 1979 states and 7973 transitions. [2021-06-01 17:33:07,819 INFO L78 Accepts]: Start accepts. Automaton has 1979 states and 7973 transitions. Word has length 25 [2021-06-01 17:33:07,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:07,820 INFO L482 AbstractCegarLoop]: Abstraction has 1979 states and 7973 transitions. [2021-06-01 17:33:07,820 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:07,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1979 states and 7973 transitions. [2021-06-01 17:33:07,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:07,823 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:07,823 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:07,823 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-06-01 17:33:07,824 INFO L430 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:07,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:07,824 INFO L82 PathProgramCache]: Analyzing trace with hash -602830467, now seen corresponding path program 142 times [2021-06-01 17:33:07,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:07,824 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743259579] [2021-06-01 17:33:07,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:07,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:07,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:07,911 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:07,911 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743259579] [2021-06-01 17:33:07,911 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743259579] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:07,911 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:07,911 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:07,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412337998] [2021-06-01 17:33:07,911 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:07,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:07,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:07,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:07,912 INFO L87 Difference]: Start difference. First operand 1979 states and 7973 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:07,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:07,966 INFO L93 Difference]: Finished difference Result 4555 states and 17414 transitions. [2021-06-01 17:33:07,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:07,966 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:07,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:07,975 INFO L225 Difference]: With dead ends: 4555 [2021-06-01 17:33:07,975 INFO L226 Difference]: Without dead ends: 4158 [2021-06-01 17:33:07,975 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 88.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:07,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4158 states. [2021-06-01 17:33:08,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4158 to 1900. [2021-06-01 17:33:08,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1900 states, 1899 states have (on average 4.0373880989994735) internal successors, (7667), 1899 states have internal predecessors, (7667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:08,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1900 states to 1900 states and 7667 transitions. [2021-06-01 17:33:08,025 INFO L78 Accepts]: Start accepts. Automaton has 1900 states and 7667 transitions. Word has length 25 [2021-06-01 17:33:08,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:08,025 INFO L482 AbstractCegarLoop]: Abstraction has 1900 states and 7667 transitions. [2021-06-01 17:33:08,025 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:08,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1900 states and 7667 transitions. [2021-06-01 17:33:08,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:08,028 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:08,028 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:08,028 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-06-01 17:33:08,028 INFO L430 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:08,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:08,028 INFO L82 PathProgramCache]: Analyzing trace with hash 935305435, now seen corresponding path program 143 times [2021-06-01 17:33:08,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:08,029 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036328892] [2021-06-01 17:33:08,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:08,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:08,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:08,109 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:08,109 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036328892] [2021-06-01 17:33:08,109 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036328892] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:08,109 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:08,109 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:08,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093238441] [2021-06-01 17:33:08,109 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:08,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:08,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:08,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:08,110 INFO L87 Difference]: Start difference. First operand 1900 states and 7667 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:08,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:08,200 INFO L93 Difference]: Finished difference Result 4501 states and 17247 transitions. [2021-06-01 17:33:08,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:08,201 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:08,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:08,212 INFO L225 Difference]: With dead ends: 4501 [2021-06-01 17:33:08,212 INFO L226 Difference]: Without dead ends: 4218 [2021-06-01 17:33:08,212 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:08,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4218 states. [2021-06-01 17:33:08,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4218 to 1962. [2021-06-01 17:33:08,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1962 states, 1961 states have (on average 4.020397756246813) internal successors, (7884), 1961 states have internal predecessors, (7884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:08,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 7884 transitions. [2021-06-01 17:33:08,285 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 7884 transitions. Word has length 25 [2021-06-01 17:33:08,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:08,285 INFO L482 AbstractCegarLoop]: Abstraction has 1962 states and 7884 transitions. [2021-06-01 17:33:08,285 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:08,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 7884 transitions. [2021-06-01 17:33:08,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:08,289 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:08,289 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:08,289 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-06-01 17:33:08,289 INFO L430 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:08,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:08,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1422084163, now seen corresponding path program 144 times [2021-06-01 17:33:08,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:08,290 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093603218] [2021-06-01 17:33:08,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:08,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:08,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:08,397 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:08,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093603218] [2021-06-01 17:33:08,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093603218] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:08,397 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:08,397 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:08,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466490914] [2021-06-01 17:33:08,397 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:08,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:08,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:08,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:08,398 INFO L87 Difference]: Start difference. First operand 1962 states and 7884 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:08,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:08,465 INFO L93 Difference]: Finished difference Result 4536 states and 17320 transitions. [2021-06-01 17:33:08,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:08,465 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:08,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:08,476 INFO L225 Difference]: With dead ends: 4536 [2021-06-01 17:33:08,477 INFO L226 Difference]: Without dead ends: 4090 [2021-06-01 17:33:08,477 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:08,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4090 states. [2021-06-01 17:33:08,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4090 to 1834. [2021-06-01 17:33:08,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1833 states have (on average 4.07746863066012) internal successors, (7474), 1833 states have internal predecessors, (7474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:08,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 7474 transitions. [2021-06-01 17:33:08,545 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 7474 transitions. Word has length 25 [2021-06-01 17:33:08,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:08,546 INFO L482 AbstractCegarLoop]: Abstraction has 1834 states and 7474 transitions. [2021-06-01 17:33:08,546 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:08,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 7474 transitions. [2021-06-01 17:33:08,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:08,549 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:08,549 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:08,549 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-06-01 17:33:08,549 INFO L430 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:08,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:08,550 INFO L82 PathProgramCache]: Analyzing trace with hash 468373021, now seen corresponding path program 145 times [2021-06-01 17:33:08,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:08,550 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615028657] [2021-06-01 17:33:08,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:08,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:08,671 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:08,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615028657] [2021-06-01 17:33:08,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615028657] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:08,671 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:08,671 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:08,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30525798] [2021-06-01 17:33:08,671 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:08,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:08,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:08,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:08,671 INFO L87 Difference]: Start difference. First operand 1834 states and 7474 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:08,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:08,729 INFO L93 Difference]: Finished difference Result 4226 states and 16188 transitions. [2021-06-01 17:33:08,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:08,729 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:08,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:08,738 INFO L225 Difference]: With dead ends: 4226 [2021-06-01 17:33:08,738 INFO L226 Difference]: Without dead ends: 3979 [2021-06-01 17:33:08,738 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:08,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3979 states. [2021-06-01 17:33:08,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3979 to 1922. [2021-06-01 17:33:08,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1922 states, 1921 states have (on average 4.071837584591359) internal successors, (7822), 1921 states have internal predecessors, (7822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:08,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1922 states to 1922 states and 7822 transitions. [2021-06-01 17:33:08,787 INFO L78 Accepts]: Start accepts. Automaton has 1922 states and 7822 transitions. Word has length 25 [2021-06-01 17:33:08,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:08,788 INFO L482 AbstractCegarLoop]: Abstraction has 1922 states and 7822 transitions. [2021-06-01 17:33:08,788 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:08,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1922 states and 7822 transitions. [2021-06-01 17:33:08,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:08,790 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:08,790 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:08,790 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-06-01 17:33:08,790 INFO L430 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:08,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:08,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1163574145, now seen corresponding path program 146 times [2021-06-01 17:33:08,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:08,791 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553760182] [2021-06-01 17:33:08,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:08,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:08,885 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:08,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553760182] [2021-06-01 17:33:08,885 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553760182] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:08,885 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:08,885 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:08,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061231006] [2021-06-01 17:33:08,886 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:08,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:08,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:08,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:08,886 INFO L87 Difference]: Start difference. First operand 1922 states and 7822 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:08,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:08,943 INFO L93 Difference]: Finished difference Result 4297 states and 16427 transitions. [2021-06-01 17:33:08,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:08,944 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:08,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:08,952 INFO L225 Difference]: With dead ends: 4297 [2021-06-01 17:33:08,952 INFO L226 Difference]: Without dead ends: 3935 [2021-06-01 17:33:08,952 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:08,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3935 states. [2021-06-01 17:33:08,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3935 to 1878. [2021-06-01 17:33:08,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1877 states have (on average 4.074587107085775) internal successors, (7648), 1877 states have internal predecessors, (7648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:09,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 7648 transitions. [2021-06-01 17:33:09,002 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 7648 transitions. Word has length 25 [2021-06-01 17:33:09,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:09,002 INFO L482 AbstractCegarLoop]: Abstraction has 1878 states and 7648 transitions. [2021-06-01 17:33:09,002 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:09,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 7648 transitions. [2021-06-01 17:33:09,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:09,005 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:09,005 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:09,005 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-06-01 17:33:09,005 INFO L430 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:09,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:09,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1713501499, now seen corresponding path program 147 times [2021-06-01 17:33:09,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:09,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499481229] [2021-06-01 17:33:09,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:09,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:09,110 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:09,110 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499481229] [2021-06-01 17:33:09,110 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499481229] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:09,110 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:09,110 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:09,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781839389] [2021-06-01 17:33:09,110 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:09,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:09,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:09,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:09,111 INFO L87 Difference]: Start difference. First operand 1878 states and 7648 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:09,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:09,172 INFO L93 Difference]: Finished difference Result 4177 states and 15988 transitions. [2021-06-01 17:33:09,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:09,172 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:09,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:09,180 INFO L225 Difference]: With dead ends: 4177 [2021-06-01 17:33:09,180 INFO L226 Difference]: Without dead ends: 3930 [2021-06-01 17:33:09,180 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:09,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3930 states. [2021-06-01 17:33:09,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3930 to 1906. [2021-06-01 17:33:09,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1906 states, 1905 states have (on average 4.060892388451443) internal successors, (7736), 1905 states have internal predecessors, (7736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:09,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 7736 transitions. [2021-06-01 17:33:09,230 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 7736 transitions. Word has length 25 [2021-06-01 17:33:09,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:09,230 INFO L482 AbstractCegarLoop]: Abstraction has 1906 states and 7736 transitions. [2021-06-01 17:33:09,230 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:09,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 7736 transitions. [2021-06-01 17:33:09,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:09,232 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:09,232 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:09,232 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-06-01 17:33:09,233 INFO L430 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:09,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:09,233 INFO L82 PathProgramCache]: Analyzing trace with hash 123566749, now seen corresponding path program 148 times [2021-06-01 17:33:09,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:09,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398656870] [2021-06-01 17:33:09,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:09,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:09,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:09,338 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:09,338 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398656870] [2021-06-01 17:33:09,338 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398656870] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:09,338 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:09,338 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:09,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208079566] [2021-06-01 17:33:09,338 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:09,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:09,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:09,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:09,338 INFO L87 Difference]: Start difference. First operand 1906 states and 7736 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:09,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:09,409 INFO L93 Difference]: Finished difference Result 4215 states and 16113 transitions. [2021-06-01 17:33:09,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:09,410 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:09,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:09,418 INFO L225 Difference]: With dead ends: 4215 [2021-06-01 17:33:09,418 INFO L226 Difference]: Without dead ends: 3902 [2021-06-01 17:33:09,418 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:09,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3902 states. [2021-06-01 17:33:09,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3902 to 1878. [2021-06-01 17:33:09,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1877 states have (on average 4.067128396377198) internal successors, (7634), 1877 states have internal predecessors, (7634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:09,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 7634 transitions. [2021-06-01 17:33:09,467 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 7634 transitions. Word has length 25 [2021-06-01 17:33:09,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:09,467 INFO L482 AbstractCegarLoop]: Abstraction has 1878 states and 7634 transitions. [2021-06-01 17:33:09,467 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:09,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 7634 transitions. [2021-06-01 17:33:09,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:09,470 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:09,470 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:09,470 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-06-01 17:33:09,470 INFO L430 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:09,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:09,470 INFO L82 PathProgramCache]: Analyzing trace with hash -514596737, now seen corresponding path program 149 times [2021-06-01 17:33:09,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:09,470 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924369866] [2021-06-01 17:33:09,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:09,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:09,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:09,573 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:09,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924369866] [2021-06-01 17:33:09,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924369866] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:09,574 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:09,574 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:09,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864454876] [2021-06-01 17:33:09,574 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:09,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:09,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:09,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:09,574 INFO L87 Difference]: Start difference. First operand 1878 states and 7634 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:09,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:09,645 INFO L93 Difference]: Finished difference Result 4337 states and 16592 transitions. [2021-06-01 17:33:09,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:09,646 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:09,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:09,654 INFO L225 Difference]: With dead ends: 4337 [2021-06-01 17:33:09,654 INFO L226 Difference]: Without dead ends: 4052 [2021-06-01 17:33:09,654 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 118.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:09,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4052 states. [2021-06-01 17:33:09,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4052 to 1957. [2021-06-01 17:33:09,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1957 states, 1956 states have (on average 4.039366053169734) internal successors, (7901), 1956 states have internal predecessors, (7901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:09,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 7901 transitions. [2021-06-01 17:33:09,706 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 7901 transitions. Word has length 25 [2021-06-01 17:33:09,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:09,706 INFO L482 AbstractCegarLoop]: Abstraction has 1957 states and 7901 transitions. [2021-06-01 17:33:09,706 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:09,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 7901 transitions. [2021-06-01 17:33:09,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:09,709 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:09,709 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:09,709 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-06-01 17:33:09,709 INFO L430 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:09,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:09,710 INFO L82 PathProgramCache]: Analyzing trace with hash -216543779, now seen corresponding path program 150 times [2021-06-01 17:33:09,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:09,710 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867664450] [2021-06-01 17:33:09,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:09,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:09,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:09,800 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:09,800 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867664450] [2021-06-01 17:33:09,800 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867664450] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:09,800 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:09,800 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:09,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651154718] [2021-06-01 17:33:09,800 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:09,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:09,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:09,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:09,801 INFO L87 Difference]: Start difference. First operand 1957 states and 7901 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:09,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:09,858 INFO L93 Difference]: Finished difference Result 4370 states and 16659 transitions. [2021-06-01 17:33:09,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:09,859 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:09,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:09,867 INFO L225 Difference]: With dead ends: 4370 [2021-06-01 17:33:09,867 INFO L226 Difference]: Without dead ends: 3943 [2021-06-01 17:33:09,867 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:09,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3943 states. [2021-06-01 17:33:09,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3943 to 1848. [2021-06-01 17:33:09,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1848 states, 1847 states have (on average 4.075257173795344) internal successors, (7527), 1847 states have internal predecessors, (7527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:09,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1848 states to 1848 states and 7527 transitions. [2021-06-01 17:33:09,916 INFO L78 Accepts]: Start accepts. Automaton has 1848 states and 7527 transitions. Word has length 25 [2021-06-01 17:33:09,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:09,916 INFO L482 AbstractCegarLoop]: Abstraction has 1848 states and 7527 transitions. [2021-06-01 17:33:09,916 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:09,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1848 states and 7527 transitions. [2021-06-01 17:33:09,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:09,919 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:09,919 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:09,919 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-06-01 17:33:09,919 INFO L430 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:09,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:09,919 INFO L82 PathProgramCache]: Analyzing trace with hash 476041019, now seen corresponding path program 151 times [2021-06-01 17:33:09,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:09,919 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804753949] [2021-06-01 17:33:09,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:09,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:10,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:10,015 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:10,015 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804753949] [2021-06-01 17:33:10,015 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804753949] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:10,015 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:10,016 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:10,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579361802] [2021-06-01 17:33:10,016 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:10,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:10,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:10,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:10,016 INFO L87 Difference]: Start difference. First operand 1848 states and 7527 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:10,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:10,076 INFO L93 Difference]: Finished difference Result 4119 states and 15766 transitions. [2021-06-01 17:33:10,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:10,077 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:10,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:10,085 INFO L225 Difference]: With dead ends: 4119 [2021-06-01 17:33:10,085 INFO L226 Difference]: Without dead ends: 3872 [2021-06-01 17:33:10,085 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:10,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3872 states. [2021-06-01 17:33:10,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3872 to 1912. [2021-06-01 17:33:10,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1912 states, 1911 states have (on average 4.066457352171638) internal successors, (7771), 1911 states have internal predecessors, (7771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:10,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1912 states to 1912 states and 7771 transitions. [2021-06-01 17:33:10,134 INFO L78 Accepts]: Start accepts. Automaton has 1912 states and 7771 transitions. Word has length 25 [2021-06-01 17:33:10,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:10,135 INFO L482 AbstractCegarLoop]: Abstraction has 1912 states and 7771 transitions. [2021-06-01 17:33:10,135 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:10,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1912 states and 7771 transitions. [2021-06-01 17:33:10,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:10,137 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:10,137 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:10,137 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-06-01 17:33:10,137 INFO L430 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:10,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:10,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1155906147, now seen corresponding path program 152 times [2021-06-01 17:33:10,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:10,138 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989704535] [2021-06-01 17:33:10,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:10,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:10,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:10,248 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:10,248 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989704535] [2021-06-01 17:33:10,248 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989704535] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:10,248 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:10,248 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:10,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535212069] [2021-06-01 17:33:10,248 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:10,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:10,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:10,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:10,249 INFO L87 Difference]: Start difference. First operand 1912 states and 7771 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:10,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:10,315 INFO L93 Difference]: Finished difference Result 4190 states and 16005 transitions. [2021-06-01 17:33:10,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:10,315 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:10,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:10,323 INFO L225 Difference]: With dead ends: 4190 [2021-06-01 17:33:10,323 INFO L226 Difference]: Without dead ends: 3828 [2021-06-01 17:33:10,324 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:10,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3828 states. [2021-06-01 17:33:10,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3828 to 1868. [2021-06-01 17:33:10,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1868 states, 1867 states have (on average 4.070166041778254) internal successors, (7599), 1867 states have internal predecessors, (7599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:10,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1868 states to 1868 states and 7599 transitions. [2021-06-01 17:33:10,374 INFO L78 Accepts]: Start accepts. Automaton has 1868 states and 7599 transitions. Word has length 25 [2021-06-01 17:33:10,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:10,374 INFO L482 AbstractCegarLoop]: Abstraction has 1868 states and 7599 transitions. [2021-06-01 17:33:10,374 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:10,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 7599 transitions. [2021-06-01 17:33:10,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:10,377 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:10,377 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:10,377 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-06-01 17:33:10,377 INFO L430 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:10,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:10,377 INFO L82 PathProgramCache]: Analyzing trace with hash 232191739, now seen corresponding path program 153 times [2021-06-01 17:33:10,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:10,377 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506490113] [2021-06-01 17:33:10,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:10,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:10,485 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:10,485 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506490113] [2021-06-01 17:33:10,485 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506490113] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:10,485 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:10,485 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:10,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796194926] [2021-06-01 17:33:10,485 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:10,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:10,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:10,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:10,486 INFO L87 Difference]: Start difference. First operand 1868 states and 7599 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:10,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:10,573 INFO L93 Difference]: Finished difference Result 3988 states and 15267 transitions. [2021-06-01 17:33:10,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:10,574 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:10,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:10,583 INFO L225 Difference]: With dead ends: 3988 [2021-06-01 17:33:10,583 INFO L226 Difference]: Without dead ends: 3741 [2021-06-01 17:33:10,584 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:10,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3741 states. [2021-06-01 17:33:10,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3741 to 1892. [2021-06-01 17:33:10,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1892 states, 1891 states have (on average 4.058699101004759) internal successors, (7675), 1891 states have internal predecessors, (7675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:10,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 7675 transitions. [2021-06-01 17:33:10,650 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 7675 transitions. Word has length 25 [2021-06-01 17:33:10,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:10,650 INFO L482 AbstractCegarLoop]: Abstraction has 1892 states and 7675 transitions. [2021-06-01 17:33:10,650 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:10,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 7675 transitions. [2021-06-01 17:33:10,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:10,654 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:10,654 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:10,654 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-06-01 17:33:10,654 INFO L430 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:10,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:10,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1294724387, now seen corresponding path program 154 times [2021-06-01 17:33:10,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:10,655 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944412572] [2021-06-01 17:33:10,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:10,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:10,761 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:10,761 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944412572] [2021-06-01 17:33:10,761 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944412572] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:10,761 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:10,761 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:10,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305435993] [2021-06-01 17:33:10,761 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:10,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:10,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:10,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:10,762 INFO L87 Difference]: Start difference. First operand 1892 states and 7675 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:10,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:10,848 INFO L93 Difference]: Finished difference Result 3812 states and 14690 transitions. [2021-06-01 17:33:10,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:10,849 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:10,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:10,856 INFO L225 Difference]: With dead ends: 3812 [2021-06-01 17:33:10,856 INFO L226 Difference]: Without dead ends: 3525 [2021-06-01 17:33:10,856 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 137.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:10,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3525 states. [2021-06-01 17:33:10,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3525 to 1868. [2021-06-01 17:33:10,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1868 states, 1867 states have (on average 4.06373861810391) internal successors, (7587), 1867 states have internal predecessors, (7587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:10,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1868 states to 1868 states and 7587 transitions. [2021-06-01 17:33:10,903 INFO L78 Accepts]: Start accepts. Automaton has 1868 states and 7587 transitions. Word has length 25 [2021-06-01 17:33:10,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:10,903 INFO L482 AbstractCegarLoop]: Abstraction has 1868 states and 7587 transitions. [2021-06-01 17:33:10,903 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:10,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 7587 transitions. [2021-06-01 17:33:10,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:10,905 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:10,905 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:10,905 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-06-01 17:33:10,906 INFO L430 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:10,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:10,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1932887873, now seen corresponding path program 155 times [2021-06-01 17:33:10,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:10,906 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383764164] [2021-06-01 17:33:10,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:10,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:10,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:10,999 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:10,999 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383764164] [2021-06-01 17:33:10,999 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383764164] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:10,999 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:10,999 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:10,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293888950] [2021-06-01 17:33:10,999 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:10,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:11,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:11,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:11,000 INFO L87 Difference]: Start difference. First operand 1868 states and 7587 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:11,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:11,078 INFO L93 Difference]: Finished difference Result 4159 states and 15918 transitions. [2021-06-01 17:33:11,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:11,079 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:11,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:11,086 INFO L225 Difference]: With dead ends: 4159 [2021-06-01 17:33:11,087 INFO L226 Difference]: Without dead ends: 3896 [2021-06-01 17:33:11,087 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:11,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3896 states. [2021-06-01 17:33:11,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3896 to 1920. [2021-06-01 17:33:11,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1920 states, 1919 states have (on average 4.0495049504950495) internal successors, (7771), 1919 states have internal predecessors, (7771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:11,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 7771 transitions. [2021-06-01 17:33:11,137 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 7771 transitions. Word has length 25 [2021-06-01 17:33:11,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:11,137 INFO L482 AbstractCegarLoop]: Abstraction has 1920 states and 7771 transitions. [2021-06-01 17:33:11,137 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:11,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 7771 transitions. [2021-06-01 17:33:11,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:11,139 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:11,140 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:11,140 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-06-01 17:33:11,140 INFO L430 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:11,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:11,140 INFO L82 PathProgramCache]: Analyzing trace with hash 706555037, now seen corresponding path program 156 times [2021-06-01 17:33:11,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:11,140 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572012133] [2021-06-01 17:33:11,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:11,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:11,247 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:11,248 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572012133] [2021-06-01 17:33:11,248 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572012133] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:11,248 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:11,248 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:11,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187939014] [2021-06-01 17:33:11,248 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:11,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:11,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:11,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:11,249 INFO L87 Difference]: Start difference. First operand 1920 states and 7771 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:11,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:11,305 INFO L93 Difference]: Finished difference Result 4087 states and 15606 transitions. [2021-06-01 17:33:11,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:11,305 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:11,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:11,313 INFO L225 Difference]: With dead ends: 4087 [2021-06-01 17:33:11,313 INFO L226 Difference]: Without dead ends: 3697 [2021-06-01 17:33:11,313 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:11,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3697 states. [2021-06-01 17:33:11,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3697 to 1848. [2021-06-01 17:33:11,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1848 states, 1847 states have (on average 4.069842988630211) internal successors, (7517), 1847 states have internal predecessors, (7517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:11,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1848 states to 1848 states and 7517 transitions. [2021-06-01 17:33:11,363 INFO L78 Accepts]: Start accepts. Automaton has 1848 states and 7517 transitions. Word has length 25 [2021-06-01 17:33:11,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:11,363 INFO L482 AbstractCegarLoop]: Abstraction has 1848 states and 7517 transitions. [2021-06-01 17:33:11,363 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:11,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1848 states and 7517 transitions. [2021-06-01 17:33:11,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:11,367 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:11,367 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:11,367 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-06-01 17:33:11,367 INFO L430 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:11,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:11,368 INFO L82 PathProgramCache]: Analyzing trace with hash 414817945, now seen corresponding path program 157 times [2021-06-01 17:33:11,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:11,368 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897530192] [2021-06-01 17:33:11,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:11,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:11,466 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:11,466 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897530192] [2021-06-01 17:33:11,466 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897530192] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:11,466 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:11,467 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:11,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926474358] [2021-06-01 17:33:11,467 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:11,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:11,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:11,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:11,467 INFO L87 Difference]: Start difference. First operand 1848 states and 7517 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:11,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:11,524 INFO L93 Difference]: Finished difference Result 4013 states and 15364 transitions. [2021-06-01 17:33:11,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:11,524 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:11,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:11,532 INFO L225 Difference]: With dead ends: 4013 [2021-06-01 17:33:11,532 INFO L226 Difference]: Without dead ends: 3766 [2021-06-01 17:33:11,532 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:11,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3766 states. [2021-06-01 17:33:11,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3766 to 1888. [2021-06-01 17:33:11,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1887 states have (on average 4.059883412824589) internal successors, (7661), 1887 states have internal predecessors, (7661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:11,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 7661 transitions. [2021-06-01 17:33:11,581 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 7661 transitions. Word has length 25 [2021-06-01 17:33:11,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:11,581 INFO L482 AbstractCegarLoop]: Abstraction has 1888 states and 7661 transitions. [2021-06-01 17:33:11,581 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:11,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 7661 transitions. [2021-06-01 17:33:11,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:11,584 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:11,584 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:11,584 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-06-01 17:33:11,584 INFO L430 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:11,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:11,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1175116805, now seen corresponding path program 158 times [2021-06-01 17:33:11,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:11,584 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255273373] [2021-06-01 17:33:11,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:11,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:11,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:11,681 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:11,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255273373] [2021-06-01 17:33:11,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255273373] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:11,682 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:11,682 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:11,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513426654] [2021-06-01 17:33:11,682 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:11,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:11,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:11,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:11,682 INFO L87 Difference]: Start difference. First operand 1888 states and 7661 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:11,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:11,751 INFO L93 Difference]: Finished difference Result 4051 states and 15489 transitions. [2021-06-01 17:33:11,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:11,752 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:11,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:11,759 INFO L225 Difference]: With dead ends: 4051 [2021-06-01 17:33:11,760 INFO L226 Difference]: Without dead ends: 3738 [2021-06-01 17:33:11,760 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:11,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3738 states. [2021-06-01 17:33:11,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3738 to 1860. [2021-06-01 17:33:11,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1860 states, 1859 states have (on average 4.067240451855836) internal successors, (7561), 1859 states have internal predecessors, (7561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:11,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1860 states to 1860 states and 7561 transitions. [2021-06-01 17:33:11,807 INFO L78 Accepts]: Start accepts. Automaton has 1860 states and 7561 transitions. Word has length 25 [2021-06-01 17:33:11,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:11,807 INFO L482 AbstractCegarLoop]: Abstraction has 1860 states and 7561 transitions. [2021-06-01 17:33:11,807 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:11,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1860 states and 7561 transitions. [2021-06-01 17:33:11,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:11,810 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:11,810 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:11,810 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-06-01 17:33:11,810 INFO L430 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:11,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:11,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1079860613, now seen corresponding path program 159 times [2021-06-01 17:33:11,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:11,810 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989634673] [2021-06-01 17:33:11,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:11,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:11,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:11,913 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:11,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989634673] [2021-06-01 17:33:11,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989634673] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:11,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:11,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:11,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095087052] [2021-06-01 17:33:11,913 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:11,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:11,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:11,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:11,914 INFO L87 Difference]: Start difference. First operand 1860 states and 7561 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:11,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:11,977 INFO L93 Difference]: Finished difference Result 3931 states and 15051 transitions. [2021-06-01 17:33:11,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:11,977 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:11,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:11,985 INFO L225 Difference]: With dead ends: 3931 [2021-06-01 17:33:11,985 INFO L226 Difference]: Without dead ends: 3684 [2021-06-01 17:33:11,985 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:12,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3684 states. [2021-06-01 17:33:12,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3684 to 1884. [2021-06-01 17:33:12,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1884 states, 1883 states have (on average 4.055762081784387) internal successors, (7637), 1883 states have internal predecessors, (7637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:12,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 7637 transitions. [2021-06-01 17:33:12,031 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 7637 transitions. Word has length 25 [2021-06-01 17:33:12,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:12,031 INFO L482 AbstractCegarLoop]: Abstraction has 1884 states and 7637 transitions. [2021-06-01 17:33:12,031 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:12,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 7637 transitions. [2021-06-01 17:33:12,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:12,034 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:12,034 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:12,034 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-06-01 17:33:12,034 INFO L430 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:12,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:12,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1272834683, now seen corresponding path program 160 times [2021-06-01 17:33:12,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:12,034 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428897480] [2021-06-01 17:33:12,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:12,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:12,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:12,125 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:12,126 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428897480] [2021-06-01 17:33:12,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428897480] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:12,126 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:12,126 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:12,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425422189] [2021-06-01 17:33:12,126 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:12,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:12,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:12,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:12,126 INFO L87 Difference]: Start difference. First operand 1884 states and 7637 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:12,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:12,193 INFO L93 Difference]: Finished difference Result 3755 states and 14474 transitions. [2021-06-01 17:33:12,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:12,193 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:12,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:12,200 INFO L225 Difference]: With dead ends: 3755 [2021-06-01 17:33:12,200 INFO L226 Difference]: Without dead ends: 3468 [2021-06-01 17:33:12,200 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:12,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3468 states. [2021-06-01 17:33:12,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3468 to 1860. [2021-06-01 17:33:12,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1860 states, 1859 states have (on average 4.060785368477676) internal successors, (7549), 1859 states have internal predecessors, (7549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:12,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1860 states to 1860 states and 7549 transitions. [2021-06-01 17:33:12,245 INFO L78 Accepts]: Start accepts. Automaton has 1860 states and 7549 transitions. Word has length 25 [2021-06-01 17:33:12,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:12,245 INFO L482 AbstractCegarLoop]: Abstraction has 1860 states and 7549 transitions. [2021-06-01 17:33:12,245 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:12,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1860 states and 7549 transitions. [2021-06-01 17:33:12,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:12,248 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:12,248 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:12,248 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-06-01 17:33:12,248 INFO L430 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:12,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:12,248 INFO L82 PathProgramCache]: Analyzing trace with hash 337301341, now seen corresponding path program 161 times [2021-06-01 17:33:12,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:12,248 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785794265] [2021-06-01 17:33:12,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:12,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:12,355 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:12,355 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785794265] [2021-06-01 17:33:12,355 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785794265] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:12,355 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:12,355 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:12,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111183699] [2021-06-01 17:33:12,355 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:12,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:12,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:12,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:12,355 INFO L87 Difference]: Start difference. First operand 1860 states and 7549 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:12,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:12,427 INFO L93 Difference]: Finished difference Result 3981 states and 15248 transitions. [2021-06-01 17:33:12,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:12,427 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:12,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:12,434 INFO L225 Difference]: With dead ends: 3981 [2021-06-01 17:33:12,435 INFO L226 Difference]: Without dead ends: 3696 [2021-06-01 17:33:12,435 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 122.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:12,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3696 states. [2021-06-01 17:33:12,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3696 to 1896. [2021-06-01 17:33:12,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1896 states, 1895 states have (on average 4.046965699208443) internal successors, (7669), 1895 states have internal predecessors, (7669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:12,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 7669 transitions. [2021-06-01 17:33:12,481 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 7669 transitions. Word has length 25 [2021-06-01 17:33:12,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:12,481 INFO L482 AbstractCegarLoop]: Abstraction has 1896 states and 7669 transitions. [2021-06-01 17:33:12,481 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:12,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 7669 transitions. [2021-06-01 17:33:12,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:12,484 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:12,484 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:12,484 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-06-01 17:33:12,484 INFO L430 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:12,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:12,484 INFO L82 PathProgramCache]: Analyzing trace with hash -403650757, now seen corresponding path program 162 times [2021-06-01 17:33:12,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:12,484 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118328288] [2021-06-01 17:33:12,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:12,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:12,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:12,593 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:12,593 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118328288] [2021-06-01 17:33:12,593 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118328288] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:12,593 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:12,593 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:12,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65420453] [2021-06-01 17:33:12,593 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:12,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:12,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:12,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:12,593 INFO L87 Difference]: Start difference. First operand 1896 states and 7669 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:12,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:12,659 INFO L93 Difference]: Finished difference Result 3767 states and 14506 transitions. [2021-06-01 17:33:12,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:12,659 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:12,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:12,666 INFO L225 Difference]: With dead ends: 3767 [2021-06-01 17:33:12,667 INFO L226 Difference]: Without dead ends: 3456 [2021-06-01 17:33:12,667 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:12,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3456 states. [2021-06-01 17:33:12,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3456 to 1848. [2021-06-01 17:33:12,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1848 states, 1847 states have (on average 4.066594477531131) internal successors, (7511), 1847 states have internal predecessors, (7511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:12,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1848 states to 1848 states and 7511 transitions. [2021-06-01 17:33:12,727 INFO L78 Accepts]: Start accepts. Automaton has 1848 states and 7511 transitions. Word has length 25 [2021-06-01 17:33:12,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:12,727 INFO L482 AbstractCegarLoop]: Abstraction has 1848 states and 7511 transitions. [2021-06-01 17:33:12,727 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:12,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1848 states and 7511 transitions. [2021-06-01 17:33:12,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:12,729 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:12,729 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:12,730 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-06-01 17:33:12,730 INFO L430 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:12,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:12,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1242514623, now seen corresponding path program 163 times [2021-06-01 17:33:12,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:12,730 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610498649] [2021-06-01 17:33:12,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:12,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:12,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:12,846 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:12,846 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610498649] [2021-06-01 17:33:12,846 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610498649] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:12,846 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:12,846 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:12,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464687927] [2021-06-01 17:33:12,846 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:12,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:12,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:12,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:12,846 INFO L87 Difference]: Start difference. First operand 1848 states and 7511 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:12,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:12,915 INFO L93 Difference]: Finished difference Result 4275 states and 16419 transitions. [2021-06-01 17:33:12,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:12,915 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:12,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:12,923 INFO L225 Difference]: With dead ends: 4275 [2021-06-01 17:33:12,923 INFO L226 Difference]: Without dead ends: 3990 [2021-06-01 17:33:12,924 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:12,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3990 states. [2021-06-01 17:33:12,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3990 to 1918. [2021-06-01 17:33:12,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1918 states, 1917 states have (on average 4.059467918622849) internal successors, (7782), 1917 states have internal predecessors, (7782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:12,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1918 states to 1918 states and 7782 transitions. [2021-06-01 17:33:12,973 INFO L78 Accepts]: Start accepts. Automaton has 1918 states and 7782 transitions. Word has length 25 [2021-06-01 17:33:12,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:12,973 INFO L482 AbstractCegarLoop]: Abstraction has 1918 states and 7782 transitions. [2021-06-01 17:33:12,973 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:12,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1918 states and 7782 transitions. [2021-06-01 17:33:12,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:12,975 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:12,975 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:12,975 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-06-01 17:33:12,975 INFO L430 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:12,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:12,976 INFO L82 PathProgramCache]: Analyzing trace with hash 501562525, now seen corresponding path program 164 times [2021-06-01 17:33:12,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:12,976 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699056940] [2021-06-01 17:33:12,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:12,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:13,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:13,074 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:13,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699056940] [2021-06-01 17:33:13,074 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699056940] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:13,074 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:13,074 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:13,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190638654] [2021-06-01 17:33:13,074 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:13,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:13,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:13,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:13,075 INFO L87 Difference]: Start difference. First operand 1918 states and 7782 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:13,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:13,142 INFO L93 Difference]: Finished difference Result 4253 states and 16302 transitions. [2021-06-01 17:33:13,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:13,143 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:13,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:13,151 INFO L225 Difference]: With dead ends: 4253 [2021-06-01 17:33:13,151 INFO L226 Difference]: Without dead ends: 3954 [2021-06-01 17:33:13,151 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 116.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:13,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3954 states. [2021-06-01 17:33:13,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3954 to 1882. [2021-06-01 17:33:13,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1882 states, 1881 states have (on average 4.0637958532695375) internal successors, (7644), 1881 states have internal predecessors, (7644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:13,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 7644 transitions. [2021-06-01 17:33:13,199 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 7644 transitions. Word has length 25 [2021-06-01 17:33:13,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:13,199 INFO L482 AbstractCegarLoop]: Abstraction has 1882 states and 7644 transitions. [2021-06-01 17:33:13,199 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:13,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 7644 transitions. [2021-06-01 17:33:13,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:13,201 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:13,201 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:13,201 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-06-01 17:33:13,201 INFO L430 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:13,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:13,202 INFO L82 PathProgramCache]: Analyzing trace with hash -578520803, now seen corresponding path program 165 times [2021-06-01 17:33:13,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:13,202 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951144605] [2021-06-01 17:33:13,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:13,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:13,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:13,301 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:13,301 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951144605] [2021-06-01 17:33:13,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951144605] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:13,301 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:13,301 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:13,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169233200] [2021-06-01 17:33:13,301 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:13,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:13,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:13,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:13,301 INFO L87 Difference]: Start difference. First operand 1882 states and 7644 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:13,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:13,366 INFO L93 Difference]: Finished difference Result 4294 states and 16440 transitions. [2021-06-01 17:33:13,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:13,366 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:13,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:13,374 INFO L225 Difference]: With dead ends: 4294 [2021-06-01 17:33:13,374 INFO L226 Difference]: Without dead ends: 4009 [2021-06-01 17:33:13,374 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:13,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4009 states. [2021-06-01 17:33:13,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4009 to 1961. [2021-06-01 17:33:13,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1961 states, 1960 states have (on average 4.036224489795918) internal successors, (7911), 1960 states have internal predecessors, (7911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:13,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 7911 transitions. [2021-06-01 17:33:13,425 INFO L78 Accepts]: Start accepts. Automaton has 1961 states and 7911 transitions. Word has length 25 [2021-06-01 17:33:13,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:13,425 INFO L482 AbstractCegarLoop]: Abstraction has 1961 states and 7911 transitions. [2021-06-01 17:33:13,425 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:13,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1961 states and 7911 transitions. [2021-06-01 17:33:13,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:13,428 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:13,428 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:13,428 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-06-01 17:33:13,428 INFO L430 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:13,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:13,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1441432093, now seen corresponding path program 166 times [2021-06-01 17:33:13,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:13,428 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631825030] [2021-06-01 17:33:13,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:13,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:13,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:13,524 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:13,524 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631825030] [2021-06-01 17:33:13,524 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631825030] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:13,524 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:13,524 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:13,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508671401] [2021-06-01 17:33:13,525 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:13,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:13,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:13,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:13,525 INFO L87 Difference]: Start difference. First operand 1961 states and 7911 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:13,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:13,585 INFO L93 Difference]: Finished difference Result 4327 states and 16507 transitions. [2021-06-01 17:33:13,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:13,585 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:13,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:13,593 INFO L225 Difference]: With dead ends: 4327 [2021-06-01 17:33:13,593 INFO L226 Difference]: Without dead ends: 3930 [2021-06-01 17:33:13,593 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:13,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3930 states. [2021-06-01 17:33:13,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3930 to 1882. [2021-06-01 17:33:13,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1882 states, 1881 states have (on average 4.045720361509836) internal successors, (7610), 1881 states have internal predecessors, (7610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:13,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 7610 transitions. [2021-06-01 17:33:13,641 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 7610 transitions. Word has length 25 [2021-06-01 17:33:13,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:13,641 INFO L482 AbstractCegarLoop]: Abstraction has 1882 states and 7610 transitions. [2021-06-01 17:33:13,641 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:13,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 7610 transitions. [2021-06-01 17:33:13,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:13,644 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:13,644 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:13,644 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-06-01 17:33:13,644 INFO L430 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:13,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:13,644 INFO L82 PathProgramCache]: Analyzing trace with hash -832353669, now seen corresponding path program 167 times [2021-06-01 17:33:13,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:13,644 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315584482] [2021-06-01 17:33:13,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:13,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:13,753 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:13,753 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315584482] [2021-06-01 17:33:13,753 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315584482] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:13,753 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:13,753 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:13,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374460825] [2021-06-01 17:33:13,753 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:13,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:13,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:13,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:13,754 INFO L87 Difference]: Start difference. First operand 1882 states and 7610 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:13,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:13,825 INFO L93 Difference]: Finished difference Result 4223 states and 16150 transitions. [2021-06-01 17:33:13,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:13,826 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:13,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:13,833 INFO L225 Difference]: With dead ends: 4223 [2021-06-01 17:33:13,834 INFO L226 Difference]: Without dead ends: 3960 [2021-06-01 17:33:13,834 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 126.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:13,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3960 states. [2021-06-01 17:33:13,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3960 to 1934. [2021-06-01 17:33:13,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1934 states, 1933 states have (on average 4.03207449560269) internal successors, (7794), 1933 states have internal predecessors, (7794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:13,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 7794 transitions. [2021-06-01 17:33:13,883 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 7794 transitions. Word has length 25 [2021-06-01 17:33:13,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:13,883 INFO L482 AbstractCegarLoop]: Abstraction has 1934 states and 7794 transitions. [2021-06-01 17:33:13,883 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:13,883 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 7794 transitions. [2021-06-01 17:33:13,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:13,886 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:13,886 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:13,886 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-06-01 17:33:13,886 INFO L430 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:13,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:13,886 INFO L82 PathProgramCache]: Analyzing trace with hash -614002083, now seen corresponding path program 168 times [2021-06-01 17:33:13,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:13,886 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925887959] [2021-06-01 17:33:13,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:14,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:14,001 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:14,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925887959] [2021-06-01 17:33:14,001 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925887959] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:14,001 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:14,001 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:14,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143598319] [2021-06-01 17:33:14,001 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:14,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:14,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:14,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:14,002 INFO L87 Difference]: Start difference. First operand 1934 states and 7794 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:14,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:14,074 INFO L93 Difference]: Finished difference Result 4151 states and 15838 transitions. [2021-06-01 17:33:14,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:14,074 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:14,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:14,084 INFO L225 Difference]: With dead ends: 4151 [2021-06-01 17:33:14,084 INFO L226 Difference]: Without dead ends: 3733 [2021-06-01 17:33:14,084 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 117.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:14,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3733 states. [2021-06-01 17:33:14,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3733 to 1834. [2021-06-01 17:33:14,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1833 states have (on average 4.073649754500818) internal successors, (7467), 1833 states have internal predecessors, (7467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:14,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 7467 transitions. [2021-06-01 17:33:14,145 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 7467 transitions. Word has length 25 [2021-06-01 17:33:14,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:14,145 INFO L482 AbstractCegarLoop]: Abstraction has 1834 states and 7467 transitions. [2021-06-01 17:33:14,145 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:14,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 7467 transitions. [2021-06-01 17:33:14,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:14,147 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:14,147 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:14,148 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-06-01 17:33:14,148 INFO L430 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:14,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:14,148 INFO L82 PathProgramCache]: Analyzing trace with hash 870199643, now seen corresponding path program 169 times [2021-06-01 17:33:14,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:14,148 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544367719] [2021-06-01 17:33:14,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:14,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:14,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:14,246 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:14,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544367719] [2021-06-01 17:33:14,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544367719] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:14,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:14,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:14,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758003258] [2021-06-01 17:33:14,246 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:14,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:14,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:14,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:14,247 INFO L87 Difference]: Start difference. First operand 1834 states and 7467 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:14,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:14,302 INFO L93 Difference]: Finished difference Result 4168 states and 15997 transitions. [2021-06-01 17:33:14,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:14,302 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:14,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:14,310 INFO L225 Difference]: With dead ends: 4168 [2021-06-01 17:33:14,310 INFO L226 Difference]: Without dead ends: 3921 [2021-06-01 17:33:14,311 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:14,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3921 states. [2021-06-01 17:33:14,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3921 to 1910. [2021-06-01 17:33:14,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1910 states, 1909 states have (on average 4.070717653221582) internal successors, (7771), 1909 states have internal predecessors, (7771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:14,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1910 states to 1910 states and 7771 transitions. [2021-06-01 17:33:14,359 INFO L78 Accepts]: Start accepts. Automaton has 1910 states and 7771 transitions. Word has length 25 [2021-06-01 17:33:14,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:14,359 INFO L482 AbstractCegarLoop]: Abstraction has 1910 states and 7771 transitions. [2021-06-01 17:33:14,359 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:14,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1910 states and 7771 transitions. [2021-06-01 17:33:14,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:14,362 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:14,362 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:14,362 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-06-01 17:33:14,362 INFO L430 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:14,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:14,362 INFO L82 PathProgramCache]: Analyzing trace with hash -761747523, now seen corresponding path program 170 times [2021-06-01 17:33:14,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:14,362 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121140679] [2021-06-01 17:33:14,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:14,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:14,458 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:14,458 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121140679] [2021-06-01 17:33:14,458 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121140679] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:14,458 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:14,458 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:14,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484379721] [2021-06-01 17:33:14,458 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:14,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:14,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:14,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:14,458 INFO L87 Difference]: Start difference. First operand 1910 states and 7771 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:14,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:14,514 INFO L93 Difference]: Finished difference Result 4239 states and 16236 transitions. [2021-06-01 17:33:14,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:14,515 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:14,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:14,522 INFO L225 Difference]: With dead ends: 4239 [2021-06-01 17:33:14,522 INFO L226 Difference]: Without dead ends: 3877 [2021-06-01 17:33:14,523 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:14,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3877 states. [2021-06-01 17:33:14,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3877 to 1866. [2021-06-01 17:33:14,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1866 states, 1865 states have (on average 4.073458445040214) internal successors, (7597), 1865 states have internal predecessors, (7597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:14,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 7597 transitions. [2021-06-01 17:33:14,570 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 7597 transitions. Word has length 25 [2021-06-01 17:33:14,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:14,571 INFO L482 AbstractCegarLoop]: Abstraction has 1866 states and 7597 transitions. [2021-06-01 17:33:14,571 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:14,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 7597 transitions. [2021-06-01 17:33:14,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:14,573 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:14,573 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:14,573 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-06-01 17:33:14,573 INFO L430 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:14,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:14,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1529420059, now seen corresponding path program 171 times [2021-06-01 17:33:14,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:14,574 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213608744] [2021-06-01 17:33:14,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:14,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:14,664 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:14,664 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213608744] [2021-06-01 17:33:14,664 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213608744] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:14,664 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:14,664 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:14,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837956833] [2021-06-01 17:33:14,664 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:14,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:14,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:14,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:14,665 INFO L87 Difference]: Start difference. First operand 1866 states and 7597 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:14,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:14,724 INFO L93 Difference]: Finished difference Result 4117 states and 15792 transitions. [2021-06-01 17:33:14,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:14,725 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:14,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:14,732 INFO L225 Difference]: With dead ends: 4117 [2021-06-01 17:33:14,733 INFO L226 Difference]: Without dead ends: 3870 [2021-06-01 17:33:14,733 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:14,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3870 states. [2021-06-01 17:33:14,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3870 to 1894. [2021-06-01 17:33:14,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1894 states, 1893 states have (on average 4.0596936080295825) internal successors, (7685), 1893 states have internal predecessors, (7685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:14,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 7685 transitions. [2021-06-01 17:33:14,780 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 7685 transitions. Word has length 25 [2021-06-01 17:33:14,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:14,781 INFO L482 AbstractCegarLoop]: Abstraction has 1894 states and 7685 transitions. [2021-06-01 17:33:14,781 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:14,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 7685 transitions. [2021-06-01 17:33:14,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:14,783 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:14,783 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:14,783 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-06-01 17:33:14,783 INFO L430 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:14,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:14,784 INFO L82 PathProgramCache]: Analyzing trace with hash -39508483, now seen corresponding path program 172 times [2021-06-01 17:33:14,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:14,784 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691425426] [2021-06-01 17:33:14,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:14,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:14,877 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:14,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691425426] [2021-06-01 17:33:14,877 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691425426] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:14,877 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:14,877 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:14,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486744706] [2021-06-01 17:33:14,877 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:14,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:14,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:14,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:14,878 INFO L87 Difference]: Start difference. First operand 1894 states and 7685 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:14,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:14,961 INFO L93 Difference]: Finished difference Result 4153 states and 15912 transitions. [2021-06-01 17:33:14,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:14,961 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:14,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:14,969 INFO L225 Difference]: With dead ends: 4153 [2021-06-01 17:33:14,969 INFO L226 Difference]: Without dead ends: 3842 [2021-06-01 17:33:14,970 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:14,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3842 states. [2021-06-01 17:33:15,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3842 to 1866. [2021-06-01 17:33:15,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1866 states, 1865 states have (on average 4.0659517426273455) internal successors, (7583), 1865 states have internal predecessors, (7583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:15,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 7583 transitions. [2021-06-01 17:33:15,018 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 7583 transitions. Word has length 25 [2021-06-01 17:33:15,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:15,018 INFO L482 AbstractCegarLoop]: Abstraction has 1866 states and 7583 transitions. [2021-06-01 17:33:15,018 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:15,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 7583 transitions. [2021-06-01 17:33:15,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:15,020 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:15,020 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:15,020 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-06-01 17:33:15,020 INFO L430 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:15,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:15,021 INFO L82 PathProgramCache]: Analyzing trace with hash -677671969, now seen corresponding path program 173 times [2021-06-01 17:33:15,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:15,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386638460] [2021-06-01 17:33:15,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:15,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:15,104 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:15,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386638460] [2021-06-01 17:33:15,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386638460] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:15,104 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:15,104 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:15,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413124027] [2021-06-01 17:33:15,104 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:15,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:15,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:15,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:15,104 INFO L87 Difference]: Start difference. First operand 1866 states and 7583 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:15,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:15,184 INFO L93 Difference]: Finished difference Result 4258 states and 16340 transitions. [2021-06-01 17:33:15,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:15,184 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:15,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:15,192 INFO L225 Difference]: With dead ends: 4258 [2021-06-01 17:33:15,192 INFO L226 Difference]: Without dead ends: 3975 [2021-06-01 17:33:15,193 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:15,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3975 states. [2021-06-01 17:33:15,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3975 to 1928. [2021-06-01 17:33:15,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1928 states, 1927 states have (on average 4.0477426050856256) internal successors, (7800), 1927 states have internal predecessors, (7800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:15,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1928 states to 1928 states and 7800 transitions. [2021-06-01 17:33:15,241 INFO L78 Accepts]: Start accepts. Automaton has 1928 states and 7800 transitions. Word has length 25 [2021-06-01 17:33:15,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:15,241 INFO L482 AbstractCegarLoop]: Abstraction has 1928 states and 7800 transitions. [2021-06-01 17:33:15,241 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:15,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1928 states and 7800 transitions. [2021-06-01 17:33:15,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:15,244 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:15,244 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:15,244 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-06-01 17:33:15,244 INFO L430 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:15,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:15,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1030811459, now seen corresponding path program 174 times [2021-06-01 17:33:15,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:15,244 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443639686] [2021-06-01 17:33:15,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:15,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:15,327 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:15,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443639686] [2021-06-01 17:33:15,327 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443639686] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:15,327 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:15,327 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:15,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306033315] [2021-06-01 17:33:15,327 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:15,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:15,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:15,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:15,328 INFO L87 Difference]: Start difference. First operand 1928 states and 7800 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:15,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:15,387 INFO L93 Difference]: Finished difference Result 4293 states and 16413 transitions. [2021-06-01 17:33:15,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:15,388 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:15,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:15,395 INFO L225 Difference]: With dead ends: 4293 [2021-06-01 17:33:15,396 INFO L226 Difference]: Without dead ends: 3891 [2021-06-01 17:33:15,396 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 86.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:15,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3891 states. [2021-06-01 17:33:15,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3891 to 1844. [2021-06-01 17:33:15,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1844 states, 1843 states have (on average 4.0737927292457945) internal successors, (7508), 1843 states have internal predecessors, (7508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:15,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 7508 transitions. [2021-06-01 17:33:15,443 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 7508 transitions. Word has length 25 [2021-06-01 17:33:15,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:15,443 INFO L482 AbstractCegarLoop]: Abstraction has 1844 states and 7508 transitions. [2021-06-01 17:33:15,443 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:15,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 7508 transitions. [2021-06-01 17:33:15,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:15,445 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:15,445 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:15,445 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-06-01 17:33:15,445 INFO L430 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:15,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:15,446 INFO L82 PathProgramCache]: Analyzing trace with hash -2023650115, now seen corresponding path program 175 times [2021-06-01 17:33:15,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:15,446 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058411942] [2021-06-01 17:33:15,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:15,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:15,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:15,535 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:15,535 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058411942] [2021-06-01 17:33:15,535 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058411942] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:15,535 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:15,535 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:15,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715713571] [2021-06-01 17:33:15,536 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:15,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:15,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:15,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:15,536 INFO L87 Difference]: Start difference. First operand 1844 states and 7508 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:15,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:15,589 INFO L93 Difference]: Finished difference Result 4088 states and 15663 transitions. [2021-06-01 17:33:15,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:15,589 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:15,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:15,597 INFO L225 Difference]: With dead ends: 4088 [2021-06-01 17:33:15,597 INFO L226 Difference]: Without dead ends: 3841 [2021-06-01 17:33:15,597 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:15,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3841 states. [2021-06-01 17:33:15,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3841 to 1908. [2021-06-01 17:33:15,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1908 states, 1907 states have (on average 4.065023597273204) internal successors, (7752), 1907 states have internal predecessors, (7752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:15,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1908 states to 1908 states and 7752 transitions. [2021-06-01 17:33:15,646 INFO L78 Accepts]: Start accepts. Automaton has 1908 states and 7752 transitions. Word has length 25 [2021-06-01 17:33:15,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:15,646 INFO L482 AbstractCegarLoop]: Abstraction has 1908 states and 7752 transitions. [2021-06-01 17:33:15,646 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:15,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1908 states and 7752 transitions. [2021-06-01 17:33:15,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:15,649 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:15,649 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:15,649 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-06-01 17:33:15,649 INFO L430 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:15,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:15,649 INFO L82 PathProgramCache]: Analyzing trace with hash 639370015, now seen corresponding path program 176 times [2021-06-01 17:33:15,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:15,650 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298899626] [2021-06-01 17:33:15,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:15,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:15,741 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:15,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298899626] [2021-06-01 17:33:15,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298899626] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:15,741 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:15,741 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:15,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592863524] [2021-06-01 17:33:15,741 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:15,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:15,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:15,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:15,742 INFO L87 Difference]: Start difference. First operand 1908 states and 7752 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:15,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:15,797 INFO L93 Difference]: Finished difference Result 4159 states and 15902 transitions. [2021-06-01 17:33:15,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:15,798 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:15,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:15,805 INFO L225 Difference]: With dead ends: 4159 [2021-06-01 17:33:15,805 INFO L226 Difference]: Without dead ends: 3797 [2021-06-01 17:33:15,806 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:15,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3797 states. [2021-06-01 17:33:15,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3797 to 1864. [2021-06-01 17:33:15,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1864 states, 1863 states have (on average 4.068706387546968) internal successors, (7580), 1863 states have internal predecessors, (7580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:15,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 7580 transitions. [2021-06-01 17:33:15,853 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 7580 transitions. Word has length 25 [2021-06-01 17:33:15,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:15,853 INFO L482 AbstractCegarLoop]: Abstraction has 1864 states and 7580 transitions. [2021-06-01 17:33:15,853 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:15,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 7580 transitions. [2021-06-01 17:33:15,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:15,855 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:15,855 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:15,855 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-06-01 17:33:15,855 INFO L430 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:15,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:15,856 INFO L82 PathProgramCache]: Analyzing trace with hash -10520293, now seen corresponding path program 177 times [2021-06-01 17:33:15,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:15,856 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847329451] [2021-06-01 17:33:15,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:15,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:15,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:15,939 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:15,939 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847329451] [2021-06-01 17:33:15,940 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847329451] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:15,940 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:15,940 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:15,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866406279] [2021-06-01 17:33:15,940 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:15,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:15,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:15,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:15,940 INFO L87 Difference]: Start difference. First operand 1864 states and 7580 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:16,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:16,000 INFO L93 Difference]: Finished difference Result 3957 states and 15164 transitions. [2021-06-01 17:33:16,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:16,000 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:16,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:16,008 INFO L225 Difference]: With dead ends: 3957 [2021-06-01 17:33:16,008 INFO L226 Difference]: Without dead ends: 3710 [2021-06-01 17:33:16,008 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:16,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3710 states. [2021-06-01 17:33:16,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3710 to 1888. [2021-06-01 17:33:16,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1887 states have (on average 4.0572337042925275) internal successors, (7656), 1887 states have internal predecessors, (7656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:16,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 7656 transitions. [2021-06-01 17:33:16,054 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 7656 transitions. Word has length 25 [2021-06-01 17:33:16,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:16,055 INFO L482 AbstractCegarLoop]: Abstraction has 1888 states and 7656 transitions. [2021-06-01 17:33:16,055 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:16,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 7656 transitions. [2021-06-01 17:33:16,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:16,057 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:16,057 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:16,057 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-06-01 17:33:16,057 INFO L430 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:16,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:16,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1537436419, now seen corresponding path program 178 times [2021-06-01 17:33:16,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:16,058 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306136614] [2021-06-01 17:33:16,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:16,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:16,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:16,141 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:16,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306136614] [2021-06-01 17:33:16,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306136614] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:16,141 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:16,141 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:16,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695225450] [2021-06-01 17:33:16,141 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:16,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:16,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:16,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:16,142 INFO L87 Difference]: Start difference. First operand 1888 states and 7656 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:16,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:16,210 INFO L93 Difference]: Finished difference Result 3781 states and 14587 transitions. [2021-06-01 17:33:16,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:16,210 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:16,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:16,217 INFO L225 Difference]: With dead ends: 3781 [2021-06-01 17:33:16,217 INFO L226 Difference]: Without dead ends: 3494 [2021-06-01 17:33:16,217 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:16,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3494 states. [2021-06-01 17:33:16,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3494 to 1864. [2021-06-01 17:33:16,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1864 states, 1863 states have (on average 4.062265163714439) internal successors, (7568), 1863 states have internal predecessors, (7568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:16,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 7568 transitions. [2021-06-01 17:33:16,263 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 7568 transitions. Word has length 25 [2021-06-01 17:33:16,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:16,263 INFO L482 AbstractCegarLoop]: Abstraction has 1864 states and 7568 transitions. [2021-06-01 17:33:16,263 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:16,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 7568 transitions. [2021-06-01 17:33:16,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:16,265 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:16,265 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:16,266 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-06-01 17:33:16,266 INFO L430 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:16,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:16,266 INFO L82 PathProgramCache]: Analyzing trace with hash 2119367391, now seen corresponding path program 179 times [2021-06-01 17:33:16,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:16,266 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921099882] [2021-06-01 17:33:16,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:16,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:16,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:16,359 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:16,359 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921099882] [2021-06-01 17:33:16,359 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921099882] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:16,359 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:16,359 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:16,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789317802] [2021-06-01 17:33:16,359 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:16,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:16,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:16,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:16,360 INFO L87 Difference]: Start difference. First operand 1864 states and 7568 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:16,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:16,426 INFO L93 Difference]: Finished difference Result 4128 states and 15815 transitions. [2021-06-01 17:33:16,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:16,427 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:16,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:16,434 INFO L225 Difference]: With dead ends: 4128 [2021-06-01 17:33:16,434 INFO L226 Difference]: Without dead ends: 3865 [2021-06-01 17:33:16,435 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:16,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3865 states. [2021-06-01 17:33:16,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3865 to 1916. [2021-06-01 17:33:16,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1916 states, 1915 states have (on average 4.048041775456919) internal successors, (7752), 1915 states have internal predecessors, (7752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:16,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 7752 transitions. [2021-06-01 17:33:16,482 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 7752 transitions. Word has length 25 [2021-06-01 17:33:16,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:16,482 INFO L482 AbstractCegarLoop]: Abstraction has 1916 states and 7752 transitions. [2021-06-01 17:33:16,482 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:16,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 7752 transitions. [2021-06-01 17:33:16,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:16,485 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:16,485 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:16,485 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-06-01 17:33:16,485 INFO L430 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:16,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:16,485 INFO L82 PathProgramCache]: Analyzing trace with hash 463843005, now seen corresponding path program 180 times [2021-06-01 17:33:16,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:16,485 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288194910] [2021-06-01 17:33:16,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:16,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:16,586 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:16,586 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288194910] [2021-06-01 17:33:16,586 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288194910] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:16,586 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:16,586 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:16,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198505392] [2021-06-01 17:33:16,587 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:16,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:16,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:16,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:16,587 INFO L87 Difference]: Start difference. First operand 1916 states and 7752 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:16,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:16,668 INFO L93 Difference]: Finished difference Result 4056 states and 15503 transitions. [2021-06-01 17:33:16,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:16,668 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:16,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:16,675 INFO L225 Difference]: With dead ends: 4056 [2021-06-01 17:33:16,675 INFO L226 Difference]: Without dead ends: 3666 [2021-06-01 17:33:16,676 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:16,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3666 states. [2021-06-01 17:33:16,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3666 to 1844. [2021-06-01 17:33:16,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1844 states, 1843 states have (on average 4.0683667932718395) internal successors, (7498), 1843 states have internal predecessors, (7498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:16,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 7498 transitions. [2021-06-01 17:33:16,722 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 7498 transitions. Word has length 25 [2021-06-01 17:33:16,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:16,722 INFO L482 AbstractCegarLoop]: Abstraction has 1844 states and 7498 transitions. [2021-06-01 17:33:16,722 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:16,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 7498 transitions. [2021-06-01 17:33:16,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:16,724 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:16,724 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:16,724 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-06-01 17:33:16,724 INFO L430 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:16,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:16,725 INFO L82 PathProgramCache]: Analyzing trace with hash -881504037, now seen corresponding path program 181 times [2021-06-01 17:33:16,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:16,725 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949558573] [2021-06-01 17:33:16,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:16,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:16,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:16,809 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:16,809 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949558573] [2021-06-01 17:33:16,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949558573] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:16,809 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:16,809 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:16,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719255309] [2021-06-01 17:33:16,809 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:16,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:16,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:16,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:16,810 INFO L87 Difference]: Start difference. First operand 1844 states and 7498 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:16,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:16,869 INFO L93 Difference]: Finished difference Result 3978 states and 15251 transitions. [2021-06-01 17:33:16,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:16,870 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:16,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:16,877 INFO L225 Difference]: With dead ends: 3978 [2021-06-01 17:33:16,877 INFO L226 Difference]: Without dead ends: 3731 [2021-06-01 17:33:16,877 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:16,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3731 states. [2021-06-01 17:33:16,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3731 to 1884. [2021-06-01 17:33:16,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1884 states, 1883 states have (on average 4.058417419012215) internal successors, (7642), 1883 states have internal predecessors, (7642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:16,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 7642 transitions. [2021-06-01 17:33:16,924 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 7642 transitions. Word has length 25 [2021-06-01 17:33:16,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:16,924 INFO L482 AbstractCegarLoop]: Abstraction has 1884 states and 7642 transitions. [2021-06-01 17:33:16,924 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:16,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 7642 transitions. [2021-06-01 17:33:16,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:16,927 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:16,927 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:16,927 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-06-01 17:33:16,927 INFO L430 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:16,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:16,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1844534717, now seen corresponding path program 182 times [2021-06-01 17:33:16,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:16,927 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622609952] [2021-06-01 17:33:16,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:17,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:17,024 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:17,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622609952] [2021-06-01 17:33:17,025 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622609952] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:17,025 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:17,025 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:17,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940901666] [2021-06-01 17:33:17,025 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:17,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:17,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:17,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:17,025 INFO L87 Difference]: Start difference. First operand 1884 states and 7642 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:17,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:17,098 INFO L93 Difference]: Finished difference Result 4014 states and 15371 transitions. [2021-06-01 17:33:17,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:17,098 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:17,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:17,105 INFO L225 Difference]: With dead ends: 4014 [2021-06-01 17:33:17,105 INFO L226 Difference]: Without dead ends: 3703 [2021-06-01 17:33:17,106 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:17,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3703 states. [2021-06-01 17:33:17,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3703 to 1856. [2021-06-01 17:33:17,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 1855 states have (on average 4.065768194070081) internal successors, (7542), 1855 states have internal predecessors, (7542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:17,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 7542 transitions. [2021-06-01 17:33:17,152 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 7542 transitions. Word has length 25 [2021-06-01 17:33:17,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:17,152 INFO L482 AbstractCegarLoop]: Abstraction has 1856 states and 7542 transitions. [2021-06-01 17:33:17,152 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:17,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 7542 transitions. [2021-06-01 17:33:17,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:17,154 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:17,155 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:17,155 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-06-01 17:33:17,155 INFO L430 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:17,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:17,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1088312003, now seen corresponding path program 183 times [2021-06-01 17:33:17,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:17,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982408712] [2021-06-01 17:33:17,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:17,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:17,232 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:17,233 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982408712] [2021-06-01 17:33:17,233 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982408712] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:17,233 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:17,233 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:17,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681211229] [2021-06-01 17:33:17,233 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:17,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:17,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:17,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:17,233 INFO L87 Difference]: Start difference. First operand 1856 states and 7542 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:17,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:17,288 INFO L93 Difference]: Finished difference Result 3898 states and 14943 transitions. [2021-06-01 17:33:17,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:17,288 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:17,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:17,295 INFO L225 Difference]: With dead ends: 3898 [2021-06-01 17:33:17,295 INFO L226 Difference]: Without dead ends: 3651 [2021-06-01 17:33:17,295 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:17,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3651 states. [2021-06-01 17:33:17,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3651 to 1880. [2021-06-01 17:33:17,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1880 states, 1879 states have (on average 4.054284193720064) internal successors, (7618), 1879 states have internal predecessors, (7618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:17,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1880 states to 1880 states and 7618 transitions. [2021-06-01 17:33:17,341 INFO L78 Accepts]: Start accepts. Automaton has 1880 states and 7618 transitions. Word has length 25 [2021-06-01 17:33:17,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:17,342 INFO L482 AbstractCegarLoop]: Abstraction has 1880 states and 7618 transitions. [2021-06-01 17:33:17,342 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:17,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1880 states and 7618 transitions. [2021-06-01 17:33:17,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:17,344 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:17,344 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:17,344 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-06-01 17:33:17,344 INFO L430 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:17,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:17,344 INFO L82 PathProgramCache]: Analyzing trace with hash 613190845, now seen corresponding path program 184 times [2021-06-01 17:33:17,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:17,345 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593642653] [2021-06-01 17:33:17,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:17,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:17,420 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:17,420 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593642653] [2021-06-01 17:33:17,420 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593642653] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:17,420 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:17,420 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:17,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632570820] [2021-06-01 17:33:17,420 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:17,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:17,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:17,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:17,421 INFO L87 Difference]: Start difference. First operand 1880 states and 7618 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:17,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:17,511 INFO L93 Difference]: Finished difference Result 3722 states and 14366 transitions. [2021-06-01 17:33:17,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:17,511 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:17,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:17,518 INFO L225 Difference]: With dead ends: 3722 [2021-06-01 17:33:17,518 INFO L226 Difference]: Without dead ends: 3435 [2021-06-01 17:33:17,519 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:17,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3435 states. [2021-06-01 17:33:17,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3435 to 1856. [2021-06-01 17:33:17,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 1855 states have (on average 4.059299191374663) internal successors, (7530), 1855 states have internal predecessors, (7530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:17,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 7530 transitions. [2021-06-01 17:33:17,565 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 7530 transitions. Word has length 25 [2021-06-01 17:33:17,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:17,565 INFO L482 AbstractCegarLoop]: Abstraction has 1856 states and 7530 transitions. [2021-06-01 17:33:17,565 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:17,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 7530 transitions. [2021-06-01 17:33:17,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:17,568 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:17,568 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:17,568 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-06-01 17:33:17,568 INFO L430 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:17,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:17,568 INFO L82 PathProgramCache]: Analyzing trace with hash -938014433, now seen corresponding path program 185 times [2021-06-01 17:33:17,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:17,568 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106551486] [2021-06-01 17:33:17,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:17,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:17,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:17,642 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:17,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106551486] [2021-06-01 17:33:17,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106551486] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:17,642 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:17,642 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:17,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044130744] [2021-06-01 17:33:17,642 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:17,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:17,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:17,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:17,643 INFO L87 Difference]: Start difference. First operand 1856 states and 7530 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:17,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:17,718 INFO L93 Difference]: Finished difference Result 3946 states and 15135 transitions. [2021-06-01 17:33:17,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:17,718 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:17,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:17,726 INFO L225 Difference]: With dead ends: 3946 [2021-06-01 17:33:17,726 INFO L226 Difference]: Without dead ends: 3663 [2021-06-01 17:33:17,726 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:17,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3663 states. [2021-06-01 17:33:17,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3663 to 1892. [2021-06-01 17:33:17,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1892 states, 1891 states have (on average 4.0454785827604445) internal successors, (7650), 1891 states have internal predecessors, (7650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:17,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 7650 transitions. [2021-06-01 17:33:17,772 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 7650 transitions. Word has length 25 [2021-06-01 17:33:17,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:17,772 INFO L482 AbstractCegarLoop]: Abstraction has 1892 states and 7650 transitions. [2021-06-01 17:33:17,772 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:17,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 7650 transitions. [2021-06-01 17:33:17,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:17,775 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:17,775 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:17,775 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-06-01 17:33:17,775 INFO L430 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:17,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:17,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1964808317, now seen corresponding path program 186 times [2021-06-01 17:33:17,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:17,775 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062090336] [2021-06-01 17:33:17,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:17,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:17,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:17,853 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:17,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062090336] [2021-06-01 17:33:17,853 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062090336] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:17,853 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:17,853 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:17,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655424766] [2021-06-01 17:33:17,853 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:17,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:17,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:17,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:17,853 INFO L87 Difference]: Start difference. First operand 1892 states and 7650 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:17,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:17,929 INFO L93 Difference]: Finished difference Result 3734 states and 14398 transitions. [2021-06-01 17:33:17,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:17,930 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:17,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:17,937 INFO L225 Difference]: With dead ends: 3734 [2021-06-01 17:33:17,937 INFO L226 Difference]: Without dead ends: 3423 [2021-06-01 17:33:17,937 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:17,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3423 states. [2021-06-01 17:33:17,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3423 to 1844. [2021-06-01 17:33:17,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1844 states, 1843 states have (on average 4.0651112316874665) internal successors, (7492), 1843 states have internal predecessors, (7492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:17,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 7492 transitions. [2021-06-01 17:33:17,981 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 7492 transitions. Word has length 25 [2021-06-01 17:33:17,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:17,981 INFO L482 AbstractCegarLoop]: Abstraction has 1844 states and 7492 transitions. [2021-06-01 17:33:17,981 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:17,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 7492 transitions. [2021-06-01 17:33:17,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:17,984 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:17,984 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:17,984 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-06-01 17:33:17,984 INFO L430 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:17,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:17,984 INFO L82 PathProgramCache]: Analyzing trace with hash -32801151, now seen corresponding path program 187 times [2021-06-01 17:33:17,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:17,984 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921214395] [2021-06-01 17:33:17,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:17,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:18,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:18,058 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:18,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921214395] [2021-06-01 17:33:18,058 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921214395] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:18,058 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:18,059 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:18,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008832710] [2021-06-01 17:33:18,059 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:18,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:18,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:18,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:18,059 INFO L87 Difference]: Start difference. First operand 1844 states and 7492 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:18,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:18,136 INFO L93 Difference]: Finished difference Result 4213 states and 16222 transitions. [2021-06-01 17:33:18,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:18,137 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:18,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:18,145 INFO L225 Difference]: With dead ends: 4213 [2021-06-01 17:33:18,145 INFO L226 Difference]: Without dead ends: 3930 [2021-06-01 17:33:18,145 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:18,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3930 states. [2021-06-01 17:33:18,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3930 to 1906. [2021-06-01 17:33:18,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1906 states, 1905 states have (on average 4.060367454068241) internal successors, (7735), 1905 states have internal predecessors, (7735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:18,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 7735 transitions. [2021-06-01 17:33:18,193 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 7735 transitions. Word has length 25 [2021-06-01 17:33:18,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:18,194 INFO L482 AbstractCegarLoop]: Abstraction has 1906 states and 7735 transitions. [2021-06-01 17:33:18,194 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:18,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 7735 transitions. [2021-06-01 17:33:18,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:18,196 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:18,196 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:18,196 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-06-01 17:33:18,196 INFO L430 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:18,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:18,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1424945697, now seen corresponding path program 188 times [2021-06-01 17:33:18,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:18,197 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603232848] [2021-06-01 17:33:18,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:18,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:18,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:18,272 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:18,272 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603232848] [2021-06-01 17:33:18,272 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603232848] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:18,272 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:18,272 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:18,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441535195] [2021-06-01 17:33:18,272 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:18,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:18,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:18,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:18,273 INFO L87 Difference]: Start difference. First operand 1906 states and 7735 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:18,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:18,341 INFO L93 Difference]: Finished difference Result 4193 states and 16110 transitions. [2021-06-01 17:33:18,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:18,341 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:18,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:18,349 INFO L225 Difference]: With dead ends: 4193 [2021-06-01 17:33:18,349 INFO L226 Difference]: Without dead ends: 3894 [2021-06-01 17:33:18,349 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:18,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3894 states. [2021-06-01 17:33:18,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3894 to 1870. [2021-06-01 17:33:18,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1870 states, 1869 states have (on average 4.06474050294275) internal successors, (7597), 1869 states have internal predecessors, (7597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:18,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 7597 transitions. [2021-06-01 17:33:18,398 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 7597 transitions. Word has length 25 [2021-06-01 17:33:18,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:18,398 INFO L482 AbstractCegarLoop]: Abstraction has 1870 states and 7597 transitions. [2021-06-01 17:33:18,398 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:18,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 7597 transitions. [2021-06-01 17:33:18,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:18,401 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:18,401 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:18,401 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-06-01 17:33:18,401 INFO L430 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:18,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:18,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1853836577, now seen corresponding path program 189 times [2021-06-01 17:33:18,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:18,401 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809312087] [2021-06-01 17:33:18,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:18,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:18,495 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:18,495 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809312087] [2021-06-01 17:33:18,495 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809312087] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:18,495 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:18,495 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:18,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333419667] [2021-06-01 17:33:18,495 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:18,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:18,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:18,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:18,496 INFO L87 Difference]: Start difference. First operand 1870 states and 7597 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:18,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:18,571 INFO L93 Difference]: Finished difference Result 4232 states and 16243 transitions. [2021-06-01 17:33:18,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:18,571 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:18,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:18,579 INFO L225 Difference]: With dead ends: 4232 [2021-06-01 17:33:18,579 INFO L226 Difference]: Without dead ends: 3949 [2021-06-01 17:33:18,579 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:18,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3949 states. [2021-06-01 17:33:18,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3949 to 1932. [2021-06-01 17:33:18,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1932 states, 1931 states have (on average 4.046607975142413) internal successors, (7814), 1931 states have internal predecessors, (7814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:18,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 7814 transitions. [2021-06-01 17:33:18,629 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 7814 transitions. Word has length 25 [2021-06-01 17:33:18,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:18,629 INFO L482 AbstractCegarLoop]: Abstraction has 1932 states and 7814 transitions. [2021-06-01 17:33:18,629 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:18,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 7814 transitions. [2021-06-01 17:33:18,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:18,631 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:18,631 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:18,631 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-06-01 17:33:18,632 INFO L430 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:18,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:18,632 INFO L82 PathProgramCache]: Analyzing trace with hash -485076129, now seen corresponding path program 190 times [2021-06-01 17:33:18,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:18,632 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350341508] [2021-06-01 17:33:18,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:18,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:18,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:18,708 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:18,708 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350341508] [2021-06-01 17:33:18,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350341508] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:18,708 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:18,708 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:18,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189112349] [2021-06-01 17:33:18,708 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:18,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:18,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:18,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:18,708 INFO L87 Difference]: Start difference. First operand 1932 states and 7814 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:18,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:18,764 INFO L93 Difference]: Finished difference Result 4267 states and 16316 transitions. [2021-06-01 17:33:18,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:18,764 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:18,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:18,772 INFO L225 Difference]: With dead ends: 4267 [2021-06-01 17:33:18,772 INFO L226 Difference]: Without dead ends: 3887 [2021-06-01 17:33:18,772 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 80.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:18,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3887 states. [2021-06-01 17:33:18,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3887 to 1870. [2021-06-01 17:33:18,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1870 states, 1869 states have (on average 4.050829320492242) internal successors, (7571), 1869 states have internal predecessors, (7571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:18,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 7571 transitions. [2021-06-01 17:33:18,819 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 7571 transitions. Word has length 25 [2021-06-01 17:33:18,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:18,819 INFO L482 AbstractCegarLoop]: Abstraction has 1870 states and 7571 transitions. [2021-06-01 17:33:18,819 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:18,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 7571 transitions. [2021-06-01 17:33:18,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:18,822 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:18,822 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:18,822 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-06-01 17:33:18,822 INFO L430 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:18,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:18,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1489579203, now seen corresponding path program 191 times [2021-06-01 17:33:18,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:18,822 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901210640] [2021-06-01 17:33:18,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:18,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:18,915 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:18,915 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901210640] [2021-06-01 17:33:18,915 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901210640] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:18,915 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:18,915 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:18,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810244343] [2021-06-01 17:33:18,915 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:18,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:18,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:18,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:18,916 INFO L87 Difference]: Start difference. First operand 1870 states and 7571 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:18,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:18,989 INFO L93 Difference]: Finished difference Result 4182 states and 16022 transitions. [2021-06-01 17:33:18,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:18,990 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:18,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:18,998 INFO L225 Difference]: With dead ends: 4182 [2021-06-01 17:33:18,998 INFO L226 Difference]: Without dead ends: 3919 [2021-06-01 17:33:18,998 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:19,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3919 states. [2021-06-01 17:33:19,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3919 to 1922. [2021-06-01 17:33:19,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1922 states, 1921 states have (on average 4.036959916710047) internal successors, (7755), 1921 states have internal predecessors, (7755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:19,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1922 states to 1922 states and 7755 transitions. [2021-06-01 17:33:19,047 INFO L78 Accepts]: Start accepts. Automaton has 1922 states and 7755 transitions. Word has length 25 [2021-06-01 17:33:19,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:19,047 INFO L482 AbstractCegarLoop]: Abstraction has 1922 states and 7755 transitions. [2021-06-01 17:33:19,047 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:19,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1922 states and 7755 transitions. [2021-06-01 17:33:19,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:19,050 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:19,050 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:19,050 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-06-01 17:33:19,050 INFO L430 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:19,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:19,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1271227617, now seen corresponding path program 192 times [2021-06-01 17:33:19,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:19,050 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035522084] [2021-06-01 17:33:19,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:19,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:19,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:19,159 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:19,159 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035522084] [2021-06-01 17:33:19,159 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035522084] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:19,159 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:19,159 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:19,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525851517] [2021-06-01 17:33:19,160 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:19,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:19,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:19,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:19,160 INFO L87 Difference]: Start difference. First operand 1922 states and 7755 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:19,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:19,230 INFO L93 Difference]: Finished difference Result 4110 states and 15710 transitions. [2021-06-01 17:33:19,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:19,230 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:19,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:19,238 INFO L225 Difference]: With dead ends: 4110 [2021-06-01 17:33:19,238 INFO L226 Difference]: Without dead ends: 3704 [2021-06-01 17:33:19,238 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:19,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3704 states. [2021-06-01 17:33:19,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3704 to 1834. [2021-06-01 17:33:19,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1833 states have (on average 4.070921985815603) internal successors, (7462), 1833 states have internal predecessors, (7462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:19,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 7462 transitions. [2021-06-01 17:33:19,285 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 7462 transitions. Word has length 25 [2021-06-01 17:33:19,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:19,285 INFO L482 AbstractCegarLoop]: Abstraction has 1834 states and 7462 transitions. [2021-06-01 17:33:19,285 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:19,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 7462 transitions. [2021-06-01 17:33:19,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:19,287 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:19,287 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:19,288 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-06-01 17:33:19,288 INFO L430 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:19,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:19,288 INFO L82 PathProgramCache]: Analyzing trace with hash -834701063, now seen corresponding path program 193 times [2021-06-01 17:33:19,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:19,288 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552535534] [2021-06-01 17:33:19,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:19,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:19,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:19,379 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:19,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552535534] [2021-06-01 17:33:19,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552535534] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:19,379 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:19,379 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:19,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134037858] [2021-06-01 17:33:19,379 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:19,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:19,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:19,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:19,379 INFO L87 Difference]: Start difference. First operand 1834 states and 7462 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:19,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:19,433 INFO L93 Difference]: Finished difference Result 3945 states and 15138 transitions. [2021-06-01 17:33:19,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:19,433 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:19,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:19,440 INFO L225 Difference]: With dead ends: 3945 [2021-06-01 17:33:19,440 INFO L226 Difference]: Without dead ends: 3698 [2021-06-01 17:33:19,441 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:19,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2021-06-01 17:33:19,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 1882. [2021-06-01 17:33:19,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1882 states, 1881 states have (on average 4.0648591174906965) internal successors, (7646), 1881 states have internal predecessors, (7646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:19,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 7646 transitions. [2021-06-01 17:33:19,487 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 7646 transitions. Word has length 25 [2021-06-01 17:33:19,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:19,488 INFO L482 AbstractCegarLoop]: Abstraction has 1882 states and 7646 transitions. [2021-06-01 17:33:19,488 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:19,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 7646 transitions. [2021-06-01 17:33:19,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:19,491 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:19,491 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:19,491 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-06-01 17:33:19,491 INFO L430 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:19,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:19,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1870331483, now seen corresponding path program 194 times [2021-06-01 17:33:19,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:19,492 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597924683] [2021-06-01 17:33:19,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:19,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:19,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:19,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597924683] [2021-06-01 17:33:19,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597924683] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:19,585 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:19,585 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:19,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850495501] [2021-06-01 17:33:19,585 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:19,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:19,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:19,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:19,585 INFO L87 Difference]: Start difference. First operand 1882 states and 7646 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:19,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:19,653 INFO L93 Difference]: Finished difference Result 3983 states and 15263 transitions. [2021-06-01 17:33:19,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:19,654 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:19,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:19,661 INFO L225 Difference]: With dead ends: 3983 [2021-06-01 17:33:19,661 INFO L226 Difference]: Without dead ends: 3670 [2021-06-01 17:33:19,662 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:19,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3670 states. [2021-06-01 17:33:19,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3670 to 1854. [2021-06-01 17:33:19,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1854 states, 1853 states have (on average 4.071235833783055) internal successors, (7544), 1853 states have internal predecessors, (7544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:19,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1854 states to 1854 states and 7544 transitions. [2021-06-01 17:33:19,708 INFO L78 Accepts]: Start accepts. Automaton has 1854 states and 7544 transitions. Word has length 25 [2021-06-01 17:33:19,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:19,708 INFO L482 AbstractCegarLoop]: Abstraction has 1854 states and 7544 transitions. [2021-06-01 17:33:19,708 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:19,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1854 states and 7544 transitions. [2021-06-01 17:33:19,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:19,710 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:19,710 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:19,710 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-06-01 17:33:19,710 INFO L430 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:19,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:19,711 INFO L82 PathProgramCache]: Analyzing trace with hash 246361563, now seen corresponding path program 195 times [2021-06-01 17:33:19,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:19,711 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172647964] [2021-06-01 17:33:19,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:19,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:19,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:19,801 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:19,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172647964] [2021-06-01 17:33:19,801 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172647964] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:19,801 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:19,801 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:19,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50128305] [2021-06-01 17:33:19,801 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:19,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:19,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:19,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:19,801 INFO L87 Difference]: Start difference. First operand 1854 states and 7544 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:19,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:19,866 INFO L93 Difference]: Finished difference Result 3943 states and 15119 transitions. [2021-06-01 17:33:19,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:19,867 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:19,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:19,874 INFO L225 Difference]: With dead ends: 3943 [2021-06-01 17:33:19,874 INFO L226 Difference]: Without dead ends: 3696 [2021-06-01 17:33:19,875 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:19,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3696 states. [2021-06-01 17:33:19,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3696 to 1882. [2021-06-01 17:33:19,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1882 states, 1881 states have (on average 4.057416267942584) internal successors, (7632), 1881 states have internal predecessors, (7632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:19,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 7632 transitions. [2021-06-01 17:33:19,919 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 7632 transitions. Word has length 25 [2021-06-01 17:33:19,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:19,920 INFO L482 AbstractCegarLoop]: Abstraction has 1882 states and 7632 transitions. [2021-06-01 17:33:19,920 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:19,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 7632 transitions. [2021-06-01 17:33:19,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:19,922 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:19,922 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:19,923 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-06-01 17:33:19,923 INFO L430 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:19,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:19,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1254659547, now seen corresponding path program 196 times [2021-06-01 17:33:19,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:19,923 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750217835] [2021-06-01 17:33:19,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:20,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:20,028 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:20,028 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750217835] [2021-06-01 17:33:20,028 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750217835] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:20,028 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:20,028 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:20,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218895500] [2021-06-01 17:33:20,028 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:20,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:20,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:20,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:20,029 INFO L87 Difference]: Start difference. First operand 1882 states and 7632 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:20,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:20,095 INFO L93 Difference]: Finished difference Result 3979 states and 15239 transitions. [2021-06-01 17:33:20,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:20,095 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:20,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:20,103 INFO L225 Difference]: With dead ends: 3979 [2021-06-01 17:33:20,103 INFO L226 Difference]: Without dead ends: 3668 [2021-06-01 17:33:20,103 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 120.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:20,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3668 states. [2021-06-01 17:33:20,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3668 to 1854. [2021-06-01 17:33:20,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1854 states, 1853 states have (on average 4.063680518078791) internal successors, (7530), 1853 states have internal predecessors, (7530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:20,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1854 states to 1854 states and 7530 transitions. [2021-06-01 17:33:20,149 INFO L78 Accepts]: Start accepts. Automaton has 1854 states and 7530 transitions. Word has length 25 [2021-06-01 17:33:20,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:20,149 INFO L482 AbstractCegarLoop]: Abstraction has 1854 states and 7530 transitions. [2021-06-01 17:33:20,149 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:20,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1854 states and 7530 transitions. [2021-06-01 17:33:20,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:20,152 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:20,152 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:20,152 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2021-06-01 17:33:20,152 INFO L430 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:20,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:20,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1663523517, now seen corresponding path program 197 times [2021-06-01 17:33:20,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:20,152 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383705074] [2021-06-01 17:33:20,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:20,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:20,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:20,232 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:20,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383705074] [2021-06-01 17:33:20,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383705074] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:20,232 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:20,233 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:20,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365373349] [2021-06-01 17:33:20,233 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:20,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:20,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:20,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:20,233 INFO L87 Difference]: Start difference. First operand 1854 states and 7530 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:20,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:20,297 INFO L93 Difference]: Finished difference Result 4037 states and 15494 transitions. [2021-06-01 17:33:20,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:20,297 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:20,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:20,305 INFO L225 Difference]: With dead ends: 4037 [2021-06-01 17:33:20,305 INFO L226 Difference]: Without dead ends: 3752 [2021-06-01 17:33:20,305 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:20,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3752 states. [2021-06-01 17:33:20,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3752 to 1900. [2021-06-01 17:33:20,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1900 states, 1899 states have (on average 4.045813586097946) internal successors, (7683), 1899 states have internal predecessors, (7683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:20,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1900 states to 1900 states and 7683 transitions. [2021-06-01 17:33:20,354 INFO L78 Accepts]: Start accepts. Automaton has 1900 states and 7683 transitions. Word has length 25 [2021-06-01 17:33:20,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:20,354 INFO L482 AbstractCegarLoop]: Abstraction has 1900 states and 7683 transitions. [2021-06-01 17:33:20,354 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:20,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1900 states and 7683 transitions. [2021-06-01 17:33:20,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:20,356 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:20,356 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:20,356 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2021-06-01 17:33:20,357 INFO L430 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:20,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:20,357 INFO L82 PathProgramCache]: Analyzing trace with hash -379813477, now seen corresponding path program 198 times [2021-06-01 17:33:20,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:20,357 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113686146] [2021-06-01 17:33:20,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:20,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:20,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:20,438 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:20,438 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113686146] [2021-06-01 17:33:20,438 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113686146] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:20,438 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:20,438 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:20,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985832475] [2021-06-01 17:33:20,438 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:20,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:20,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:20,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:20,439 INFO L87 Difference]: Start difference. First operand 1900 states and 7683 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:20,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:20,505 INFO L93 Difference]: Finished difference Result 4035 states and 15443 transitions. [2021-06-01 17:33:20,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:20,506 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:20,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:20,513 INFO L225 Difference]: With dead ends: 4035 [2021-06-01 17:33:20,514 INFO L226 Difference]: Without dead ends: 3692 [2021-06-01 17:33:20,514 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:20,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3692 states. [2021-06-01 17:33:20,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3692 to 1840. [2021-06-01 17:33:20,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1840 states, 1839 states have (on average 4.071234366503535) internal successors, (7487), 1839 states have internal predecessors, (7487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:20,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 7487 transitions. [2021-06-01 17:33:20,562 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 7487 transitions. Word has length 25 [2021-06-01 17:33:20,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:20,562 INFO L482 AbstractCegarLoop]: Abstraction has 1840 states and 7487 transitions. [2021-06-01 17:33:20,562 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:20,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 7487 transitions. [2021-06-01 17:33:20,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:20,564 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:20,564 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:20,564 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2021-06-01 17:33:20,564 INFO L430 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:20,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:20,565 INFO L82 PathProgramCache]: Analyzing trace with hash -2008660773, now seen corresponding path program 199 times [2021-06-01 17:33:20,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:20,565 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825254779] [2021-06-01 17:33:20,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:20,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:20,663 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:20,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825254779] [2021-06-01 17:33:20,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825254779] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:20,663 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:20,663 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:20,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67935382] [2021-06-01 17:33:20,663 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:20,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:20,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:20,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:20,663 INFO L87 Difference]: Start difference. First operand 1840 states and 7487 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:20,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:20,716 INFO L93 Difference]: Finished difference Result 3881 states and 14872 transitions. [2021-06-01 17:33:20,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:20,716 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:20,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:20,724 INFO L225 Difference]: With dead ends: 3881 [2021-06-01 17:33:20,724 INFO L226 Difference]: Without dead ends: 3634 [2021-06-01 17:33:20,724 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:20,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3634 states. [2021-06-01 17:33:20,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3634 to 1880. [2021-06-01 17:33:20,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1880 states, 1879 states have (on average 4.061202767429484) internal successors, (7631), 1879 states have internal predecessors, (7631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:20,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1880 states to 1880 states and 7631 transitions. [2021-06-01 17:33:20,772 INFO L78 Accepts]: Start accepts. Automaton has 1880 states and 7631 transitions. Word has length 25 [2021-06-01 17:33:20,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:20,772 INFO L482 AbstractCegarLoop]: Abstraction has 1880 states and 7631 transitions. [2021-06-01 17:33:20,772 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:20,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1880 states and 7631 transitions. [2021-06-01 17:33:20,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:20,776 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:20,776 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:20,776 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2021-06-01 17:33:20,776 INFO L430 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:20,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:20,776 INFO L82 PathProgramCache]: Analyzing trace with hash 696371773, now seen corresponding path program 200 times [2021-06-01 17:33:20,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:20,776 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071800465] [2021-06-01 17:33:20,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:20,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:20,871 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:20,871 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071800465] [2021-06-01 17:33:20,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071800465] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:20,871 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:20,871 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:20,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330847064] [2021-06-01 17:33:20,871 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:20,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:20,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:20,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:20,871 INFO L87 Difference]: Start difference. First operand 1880 states and 7631 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:20,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:20,938 INFO L93 Difference]: Finished difference Result 3919 states and 14997 transitions. [2021-06-01 17:33:20,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:20,938 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:20,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:20,946 INFO L225 Difference]: With dead ends: 3919 [2021-06-01 17:33:20,946 INFO L226 Difference]: Without dead ends: 3606 [2021-06-01 17:33:20,946 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:20,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3606 states. [2021-06-01 17:33:20,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3606 to 1852. [2021-06-01 17:33:20,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1852 states, 1851 states have (on average 4.068611561318207) internal successors, (7531), 1851 states have internal predecessors, (7531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:20,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1852 states to 1852 states and 7531 transitions. [2021-06-01 17:33:20,996 INFO L78 Accepts]: Start accepts. Automaton has 1852 states and 7531 transitions. Word has length 25 [2021-06-01 17:33:20,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:20,996 INFO L482 AbstractCegarLoop]: Abstraction has 1852 states and 7531 transitions. [2021-06-01 17:33:20,996 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:20,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1852 states and 7531 transitions. [2021-06-01 17:33:20,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:20,999 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:20,999 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:20,999 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2021-06-01 17:33:20,999 INFO L430 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:20,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:20,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1959093029, now seen corresponding path program 201 times [2021-06-01 17:33:20,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:20,999 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624446702] [2021-06-01 17:33:20,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:21,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:21,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:21,084 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:21,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624446702] [2021-06-01 17:33:21,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624446702] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:21,084 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:21,084 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:21,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518149785] [2021-06-01 17:33:21,084 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:21,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:21,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:21,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:21,085 INFO L87 Difference]: Start difference. First operand 1852 states and 7531 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:21,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:21,138 INFO L93 Difference]: Finished difference Result 3799 states and 14559 transitions. [2021-06-01 17:33:21,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:21,139 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:21,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:21,146 INFO L225 Difference]: With dead ends: 3799 [2021-06-01 17:33:21,146 INFO L226 Difference]: Without dead ends: 3552 [2021-06-01 17:33:21,146 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:21,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3552 states. [2021-06-01 17:33:21,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3552 to 1876. [2021-06-01 17:33:21,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1876 states, 1875 states have (on average 4.057066666666667) internal successors, (7607), 1875 states have internal predecessors, (7607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:21,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1876 states to 1876 states and 7607 transitions. [2021-06-01 17:33:21,191 INFO L78 Accepts]: Start accepts. Automaton has 1876 states and 7607 transitions. Word has length 25 [2021-06-01 17:33:21,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:21,191 INFO L482 AbstractCegarLoop]: Abstraction has 1876 states and 7607 transitions. [2021-06-01 17:33:21,191 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:21,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1876 states and 7607 transitions. [2021-06-01 17:33:21,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:21,194 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:21,194 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:21,194 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2021-06-01 17:33:21,194 INFO L430 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:21,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:21,194 INFO L82 PathProgramCache]: Analyzing trace with hash 393602267, now seen corresponding path program 202 times [2021-06-01 17:33:21,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:21,194 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175812554] [2021-06-01 17:33:21,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:21,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:21,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:21,278 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:21,278 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175812554] [2021-06-01 17:33:21,278 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175812554] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:21,278 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:21,278 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:21,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889745737] [2021-06-01 17:33:21,278 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:21,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:21,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:21,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:21,278 INFO L87 Difference]: Start difference. First operand 1876 states and 7607 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:21,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:21,345 INFO L93 Difference]: Finished difference Result 3623 states and 13982 transitions. [2021-06-01 17:33:21,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:21,346 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:21,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:21,353 INFO L225 Difference]: With dead ends: 3623 [2021-06-01 17:33:21,353 INFO L226 Difference]: Without dead ends: 3336 [2021-06-01 17:33:21,353 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:21,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3336 states. [2021-06-01 17:33:21,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3336 to 1852. [2021-06-01 17:33:21,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1852 states, 1851 states have (on average 4.062128579146408) internal successors, (7519), 1851 states have internal predecessors, (7519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:21,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1852 states to 1852 states and 7519 transitions. [2021-06-01 17:33:21,398 INFO L78 Accepts]: Start accepts. Automaton has 1852 states and 7519 transitions. Word has length 25 [2021-06-01 17:33:21,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:21,398 INFO L482 AbstractCegarLoop]: Abstraction has 1852 states and 7519 transitions. [2021-06-01 17:33:21,398 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:21,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1852 states and 7519 transitions. [2021-06-01 17:33:21,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:21,401 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:21,401 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:21,401 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2021-06-01 17:33:21,401 INFO L430 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:21,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:21,401 INFO L82 PathProgramCache]: Analyzing trace with hash -541931075, now seen corresponding path program 203 times [2021-06-01 17:33:21,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:21,401 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355664514] [2021-06-01 17:33:21,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:21,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:21,494 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:21,494 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355664514] [2021-06-01 17:33:21,494 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355664514] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:21,494 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:21,494 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:21,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47159565] [2021-06-01 17:33:21,494 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:21,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:21,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:21,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:21,495 INFO L87 Difference]: Start difference. First operand 1852 states and 7519 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:21,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:21,561 INFO L93 Difference]: Finished difference Result 3849 states and 14756 transitions. [2021-06-01 17:33:21,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:21,561 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:21,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:21,569 INFO L225 Difference]: With dead ends: 3849 [2021-06-01 17:33:21,569 INFO L226 Difference]: Without dead ends: 3564 [2021-06-01 17:33:21,569 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:21,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3564 states. [2021-06-01 17:33:21,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3564 to 1888. [2021-06-01 17:33:21,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1887 states have (on average 4.048224695283519) internal successors, (7639), 1887 states have internal predecessors, (7639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:21,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 7639 transitions. [2021-06-01 17:33:21,617 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 7639 transitions. Word has length 25 [2021-06-01 17:33:21,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:21,617 INFO L482 AbstractCegarLoop]: Abstraction has 1888 states and 7639 transitions. [2021-06-01 17:33:21,617 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:21,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 7639 transitions. [2021-06-01 17:33:21,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:21,620 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:21,620 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:21,620 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2021-06-01 17:33:21,620 INFO L430 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:21,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:21,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1282883173, now seen corresponding path program 204 times [2021-06-01 17:33:21,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:21,620 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098402503] [2021-06-01 17:33:21,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:21,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:21,713 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:21,713 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098402503] [2021-06-01 17:33:21,713 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098402503] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:21,713 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:21,713 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:21,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478487008] [2021-06-01 17:33:21,714 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:21,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:21,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:21,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:21,714 INFO L87 Difference]: Start difference. First operand 1888 states and 7639 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:21,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:21,784 INFO L93 Difference]: Finished difference Result 3635 states and 14014 transitions. [2021-06-01 17:33:21,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:21,784 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:21,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:21,791 INFO L225 Difference]: With dead ends: 3635 [2021-06-01 17:33:21,791 INFO L226 Difference]: Without dead ends: 3324 [2021-06-01 17:33:21,791 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:21,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3324 states. [2021-06-01 17:33:21,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3324 to 1840. [2021-06-01 17:33:21,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1840 states, 1839 states have (on average 4.0679717237629145) internal successors, (7481), 1839 states have internal predecessors, (7481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:21,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 7481 transitions. [2021-06-01 17:33:21,837 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 7481 transitions. Word has length 25 [2021-06-01 17:33:21,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:21,837 INFO L482 AbstractCegarLoop]: Abstraction has 1840 states and 7481 transitions. [2021-06-01 17:33:21,837 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:21,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 7481 transitions. [2021-06-01 17:33:21,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:21,839 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:21,839 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:21,839 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2021-06-01 17:33:21,839 INFO L430 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:21,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:21,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1620655811, now seen corresponding path program 205 times [2021-06-01 17:33:21,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:21,840 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549915564] [2021-06-01 17:33:21,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:21,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:21,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:21,928 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:21,928 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549915564] [2021-06-01 17:33:21,928 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549915564] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:21,928 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:21,928 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:21,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470140390] [2021-06-01 17:33:21,929 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:21,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:21,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:21,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:21,929 INFO L87 Difference]: Start difference. First operand 1840 states and 7481 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:21,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:21,982 INFO L93 Difference]: Finished difference Result 3877 states and 14856 transitions. [2021-06-01 17:33:21,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:21,982 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:21,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:21,992 INFO L225 Difference]: With dead ends: 3877 [2021-06-01 17:33:21,992 INFO L226 Difference]: Without dead ends: 3630 [2021-06-01 17:33:21,992 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:22,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3630 states. [2021-06-01 17:33:22,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3630 to 1880. [2021-06-01 17:33:22,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1880 states, 1879 states have (on average 4.058009579563597) internal successors, (7625), 1879 states have internal predecessors, (7625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:22,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1880 states to 1880 states and 7625 transitions. [2021-06-01 17:33:22,043 INFO L78 Accepts]: Start accepts. Automaton has 1880 states and 7625 transitions. Word has length 25 [2021-06-01 17:33:22,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:22,043 INFO L482 AbstractCegarLoop]: Abstraction has 1880 states and 7625 transitions. [2021-06-01 17:33:22,043 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:22,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1880 states and 7625 transitions. [2021-06-01 17:33:22,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:22,046 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:22,046 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:22,046 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2021-06-01 17:33:22,046 INFO L430 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:22,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:22,046 INFO L82 PathProgramCache]: Analyzing trace with hash -612357827, now seen corresponding path program 206 times [2021-06-01 17:33:22,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:22,046 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846010056] [2021-06-01 17:33:22,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:22,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:22,134 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:22,134 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846010056] [2021-06-01 17:33:22,134 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846010056] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:22,134 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:22,134 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:22,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115926399] [2021-06-01 17:33:22,134 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:22,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:22,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:22,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:22,135 INFO L87 Difference]: Start difference. First operand 1880 states and 7625 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:22,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:22,201 INFO L93 Difference]: Finished difference Result 3913 states and 14976 transitions. [2021-06-01 17:33:22,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:22,201 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:22,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:22,225 INFO L225 Difference]: With dead ends: 3913 [2021-06-01 17:33:22,225 INFO L226 Difference]: Without dead ends: 3602 [2021-06-01 17:33:22,225 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:22,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3602 states. [2021-06-01 17:33:22,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3602 to 1852. [2021-06-01 17:33:22,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1852 states, 1851 states have (on average 4.065370070232307) internal successors, (7525), 1851 states have internal predecessors, (7525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:22,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1852 states to 1852 states and 7525 transitions. [2021-06-01 17:33:22,269 INFO L78 Accepts]: Start accepts. Automaton has 1852 states and 7525 transitions. Word has length 25 [2021-06-01 17:33:22,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:22,269 INFO L482 AbstractCegarLoop]: Abstraction has 1852 states and 7525 transitions. [2021-06-01 17:33:22,269 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:22,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1852 states and 7525 transitions. [2021-06-01 17:33:22,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:22,272 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:22,272 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:22,272 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2021-06-01 17:33:22,272 INFO L430 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:22,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:22,272 INFO L82 PathProgramCache]: Analyzing trace with hash 558231835, now seen corresponding path program 207 times [2021-06-01 17:33:22,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:22,272 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947635200] [2021-06-01 17:33:22,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:22,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:22,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:22,348 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:22,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947635200] [2021-06-01 17:33:22,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947635200] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:22,348 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:22,348 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:22,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925627156] [2021-06-01 17:33:22,348 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:22,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:22,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:22,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:22,349 INFO L87 Difference]: Start difference. First operand 1852 states and 7525 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:22,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:22,402 INFO L93 Difference]: Finished difference Result 3797 states and 14548 transitions. [2021-06-01 17:33:22,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:22,402 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:22,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:22,409 INFO L225 Difference]: With dead ends: 3797 [2021-06-01 17:33:22,409 INFO L226 Difference]: Without dead ends: 3550 [2021-06-01 17:33:22,410 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:22,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3550 states. [2021-06-01 17:33:22,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3550 to 1876. [2021-06-01 17:33:22,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1876 states, 1875 states have (on average 4.053866666666667) internal successors, (7601), 1875 states have internal predecessors, (7601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:22,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1876 states to 1876 states and 7601 transitions. [2021-06-01 17:33:22,456 INFO L78 Accepts]: Start accepts. Automaton has 1876 states and 7601 transitions. Word has length 25 [2021-06-01 17:33:22,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:22,456 INFO L482 AbstractCegarLoop]: Abstraction has 1876 states and 7601 transitions. [2021-06-01 17:33:22,456 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:22,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1876 states and 7601 transitions. [2021-06-01 17:33:22,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:22,459 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:22,459 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:22,459 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2021-06-01 17:33:22,459 INFO L430 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:22,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:22,459 INFO L82 PathProgramCache]: Analyzing trace with hash -87299779, now seen corresponding path program 208 times [2021-06-01 17:33:22,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:22,459 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524626769] [2021-06-01 17:33:22,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:22,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:22,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:22,535 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:22,535 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524626769] [2021-06-01 17:33:22,535 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524626769] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:22,535 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:22,535 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:22,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993128301] [2021-06-01 17:33:22,535 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:22,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:22,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:22,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:22,535 INFO L87 Difference]: Start difference. First operand 1876 states and 7601 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:22,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:22,608 INFO L93 Difference]: Finished difference Result 3621 states and 13971 transitions. [2021-06-01 17:33:22,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:22,608 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:22,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:22,615 INFO L225 Difference]: With dead ends: 3621 [2021-06-01 17:33:22,616 INFO L226 Difference]: Without dead ends: 3334 [2021-06-01 17:33:22,616 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:22,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3334 states. [2021-06-01 17:33:22,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3334 to 1852. [2021-06-01 17:33:22,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1852 states, 1851 states have (on average 4.058887088060508) internal successors, (7513), 1851 states have internal predecessors, (7513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:22,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1852 states to 1852 states and 7513 transitions. [2021-06-01 17:33:22,665 INFO L78 Accepts]: Start accepts. Automaton has 1852 states and 7513 transitions. Word has length 25 [2021-06-01 17:33:22,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:22,665 INFO L482 AbstractCegarLoop]: Abstraction has 1852 states and 7513 transitions. [2021-06-01 17:33:22,665 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:22,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1852 states and 7513 transitions. [2021-06-01 17:33:22,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:22,668 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:22,668 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:22,668 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2021-06-01 17:33:22,668 INFO L430 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:22,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:22,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1175023933, now seen corresponding path program 209 times [2021-06-01 17:33:22,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:22,669 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102693237] [2021-06-01 17:33:22,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:22,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:22,743 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:22,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102693237] [2021-06-01 17:33:22,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102693237] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:22,743 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:22,743 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:22,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467121597] [2021-06-01 17:33:22,743 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:22,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:22,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:22,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:22,744 INFO L87 Difference]: Start difference. First operand 1852 states and 7513 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:22,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:22,810 INFO L93 Difference]: Finished difference Result 3845 states and 14740 transitions. [2021-06-01 17:33:22,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:22,810 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:22,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:22,818 INFO L225 Difference]: With dead ends: 3845 [2021-06-01 17:33:22,818 INFO L226 Difference]: Without dead ends: 3562 [2021-06-01 17:33:22,818 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:22,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3562 states. [2021-06-01 17:33:22,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3562 to 1888. [2021-06-01 17:33:22,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1887 states have (on average 4.045045045045045) internal successors, (7633), 1887 states have internal predecessors, (7633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:22,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 7633 transitions. [2021-06-01 17:33:22,865 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 7633 transitions. Word has length 25 [2021-06-01 17:33:22,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:22,865 INFO L482 AbstractCegarLoop]: Abstraction has 1888 states and 7633 transitions. [2021-06-01 17:33:22,865 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:22,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 7633 transitions. [2021-06-01 17:33:22,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:22,868 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:22,868 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:22,868 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2021-06-01 17:33:22,868 INFO L430 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:22,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:22,868 INFO L82 PathProgramCache]: Analyzing trace with hash -217120613, now seen corresponding path program 210 times [2021-06-01 17:33:22,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:22,868 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149236534] [2021-06-01 17:33:22,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:22,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:22,943 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:22,943 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149236534] [2021-06-01 17:33:22,943 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149236534] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:22,943 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:22,943 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:22,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009634294] [2021-06-01 17:33:22,943 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:22,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:22,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:22,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:22,943 INFO L87 Difference]: Start difference. First operand 1888 states and 7633 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:23,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:23,011 INFO L93 Difference]: Finished difference Result 3633 states and 14003 transitions. [2021-06-01 17:33:23,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:23,012 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:23,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:23,018 INFO L225 Difference]: With dead ends: 3633 [2021-06-01 17:33:23,019 INFO L226 Difference]: Without dead ends: 3322 [2021-06-01 17:33:23,019 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:23,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3322 states. [2021-06-01 17:33:23,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3322 to 1840. [2021-06-01 17:33:23,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1840 states, 1839 states have (on average 4.064709081022294) internal successors, (7475), 1839 states have internal predecessors, (7475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:23,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 7475 transitions. [2021-06-01 17:33:23,064 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 7475 transitions. Word has length 25 [2021-06-01 17:33:23,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:23,064 INFO L482 AbstractCegarLoop]: Abstraction has 1840 states and 7475 transitions. [2021-06-01 17:33:23,064 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:23,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 7475 transitions. [2021-06-01 17:33:23,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:23,066 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:23,066 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:23,067 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2021-06-01 17:33:23,067 INFO L430 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:23,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:23,067 INFO L82 PathProgramCache]: Analyzing trace with hash -896551521, now seen corresponding path program 211 times [2021-06-01 17:33:23,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:23,067 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69961479] [2021-06-01 17:33:23,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:23,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:23,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:23,144 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:23,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69961479] [2021-06-01 17:33:23,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69961479] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:23,144 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:23,144 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:23,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854444842] [2021-06-01 17:33:23,144 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:23,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:23,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:23,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:23,144 INFO L87 Difference]: Start difference. First operand 1840 states and 7475 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:23,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:23,213 INFO L93 Difference]: Finished difference Result 4027 states and 15479 transitions. [2021-06-01 17:33:23,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:23,214 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:23,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:23,221 INFO L225 Difference]: With dead ends: 4027 [2021-06-01 17:33:23,222 INFO L226 Difference]: Without dead ends: 3742 [2021-06-01 17:33:23,222 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:23,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3742 states. [2021-06-01 17:33:23,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3742 to 1904. [2021-06-01 17:33:23,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1904 states, 1903 states have (on average 4.054125065685759) internal successors, (7715), 1903 states have internal predecessors, (7715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:23,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1904 states to 1904 states and 7715 transitions. [2021-06-01 17:33:23,270 INFO L78 Accepts]: Start accepts. Automaton has 1904 states and 7715 transitions. Word has length 25 [2021-06-01 17:33:23,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:23,270 INFO L482 AbstractCegarLoop]: Abstraction has 1904 states and 7715 transitions. [2021-06-01 17:33:23,270 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:23,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1904 states and 7715 transitions. [2021-06-01 17:33:23,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:23,273 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:23,273 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:23,273 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2021-06-01 17:33:23,273 INFO L430 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:23,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:23,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1355078781, now seen corresponding path program 212 times [2021-06-01 17:33:23,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:23,273 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530760872] [2021-06-01 17:33:23,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:23,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:23,358 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:23,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530760872] [2021-06-01 17:33:23,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530760872] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:23,358 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:23,358 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:23,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711723348] [2021-06-01 17:33:23,358 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:23,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:23,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:23,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:23,359 INFO L87 Difference]: Start difference. First operand 1904 states and 7715 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:23,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:23,423 INFO L93 Difference]: Finished difference Result 4025 states and 15428 transitions. [2021-06-01 17:33:23,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:23,424 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:23,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:23,431 INFO L225 Difference]: With dead ends: 4025 [2021-06-01 17:33:23,432 INFO L226 Difference]: Without dead ends: 3696 [2021-06-01 17:33:23,432 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:23,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3696 states. [2021-06-01 17:33:23,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3696 to 1858. [2021-06-01 17:33:23,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1858 states, 1857 states have (on average 4.06246634356489) internal successors, (7544), 1857 states have internal predecessors, (7544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:23,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 7544 transitions. [2021-06-01 17:33:23,479 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 7544 transitions. Word has length 25 [2021-06-01 17:33:23,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:23,479 INFO L482 AbstractCegarLoop]: Abstraction has 1858 states and 7544 transitions. [2021-06-01 17:33:23,479 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:23,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 7544 transitions. [2021-06-01 17:33:23,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:23,482 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:23,482 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:23,482 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2021-06-01 17:33:23,482 INFO L430 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:23,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:23,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1282336125, now seen corresponding path program 213 times [2021-06-01 17:33:23,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:23,482 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028763007] [2021-06-01 17:33:23,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:23,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:23,567 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:23,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028763007] [2021-06-01 17:33:23,567 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028763007] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:23,567 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:23,567 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:23,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380165706] [2021-06-01 17:33:23,567 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:23,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:23,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:23,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:23,567 INFO L87 Difference]: Start difference. First operand 1858 states and 7544 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:23,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:23,632 INFO L93 Difference]: Finished difference Result 3903 states and 14985 transitions. [2021-06-01 17:33:23,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:23,632 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:23,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:23,639 INFO L225 Difference]: With dead ends: 3903 [2021-06-01 17:33:23,639 INFO L226 Difference]: Without dead ends: 3618 [2021-06-01 17:33:23,639 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:23,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3618 states. [2021-06-01 17:33:23,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3618 to 1894. [2021-06-01 17:33:23,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1894 states, 1893 states have (on average 4.048600105652404) internal successors, (7664), 1893 states have internal predecessors, (7664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:23,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 7664 transitions. [2021-06-01 17:33:23,687 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 7664 transitions. Word has length 25 [2021-06-01 17:33:23,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:23,687 INFO L482 AbstractCegarLoop]: Abstraction has 1894 states and 7664 transitions. [2021-06-01 17:33:23,687 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:23,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 7664 transitions. [2021-06-01 17:33:23,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:23,689 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:23,689 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:23,689 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2021-06-01 17:33:23,690 INFO L430 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:23,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:23,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1838124413, now seen corresponding path program 214 times [2021-06-01 17:33:23,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:23,690 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121366664] [2021-06-01 17:33:23,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:23,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:23,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:23,774 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:23,774 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121366664] [2021-06-01 17:33:23,774 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121366664] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:23,774 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:23,774 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:23,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686339882] [2021-06-01 17:33:23,774 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:23,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:23,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:23,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:23,775 INFO L87 Difference]: Start difference. First operand 1894 states and 7664 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:23,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:23,844 INFO L93 Difference]: Finished difference Result 3689 states and 14243 transitions. [2021-06-01 17:33:23,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:23,845 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:23,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:23,851 INFO L225 Difference]: With dead ends: 3689 [2021-06-01 17:33:23,852 INFO L226 Difference]: Without dead ends: 3390 [2021-06-01 17:33:23,852 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:23,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3390 states. [2021-06-01 17:33:23,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3390 to 1858. [2021-06-01 17:33:23,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1858 states, 1857 states have (on average 4.052773290253096) internal successors, (7526), 1857 states have internal predecessors, (7526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:23,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 7526 transitions. [2021-06-01 17:33:23,896 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 7526 transitions. Word has length 25 [2021-06-01 17:33:23,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:23,896 INFO L482 AbstractCegarLoop]: Abstraction has 1858 states and 7526 transitions. [2021-06-01 17:33:23,896 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:23,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 7526 transitions. [2021-06-01 17:33:23,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:23,898 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:23,899 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:23,899 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2021-06-01 17:33:23,899 INFO L430 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:23,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:23,899 INFO L82 PathProgramCache]: Analyzing trace with hash -2030283557, now seen corresponding path program 215 times [2021-06-01 17:33:23,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:23,899 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030865767] [2021-06-01 17:33:23,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:23,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:23,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:23,973 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:23,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030865767] [2021-06-01 17:33:23,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030865767] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:23,973 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:23,973 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:23,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027622991] [2021-06-01 17:33:23,973 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:23,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:23,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:23,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:23,974 INFO L87 Difference]: Start difference. First operand 1858 states and 7526 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:24,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:24,037 INFO L93 Difference]: Finished difference Result 3901 states and 14962 transitions. [2021-06-01 17:33:24,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:24,038 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:24,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:24,045 INFO L225 Difference]: With dead ends: 3901 [2021-06-01 17:33:24,045 INFO L226 Difference]: Without dead ends: 3618 [2021-06-01 17:33:24,045 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:24,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3618 states. [2021-06-01 17:33:24,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3618 to 1894. [2021-06-01 17:33:24,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1894 states, 1893 states have (on average 4.039091389329108) internal successors, (7646), 1893 states have internal predecessors, (7646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:24,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 7646 transitions. [2021-06-01 17:33:24,092 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 7646 transitions. Word has length 25 [2021-06-01 17:33:24,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:24,093 INFO L482 AbstractCegarLoop]: Abstraction has 1894 states and 7646 transitions. [2021-06-01 17:33:24,093 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:24,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 7646 transitions. [2021-06-01 17:33:24,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:24,095 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:24,095 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:24,095 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2021-06-01 17:33:24,095 INFO L430 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:24,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:24,095 INFO L82 PathProgramCache]: Analyzing trace with hash 2057875773, now seen corresponding path program 216 times [2021-06-01 17:33:24,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:24,096 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74201644] [2021-06-01 17:33:24,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:24,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:24,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:24,185 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:24,185 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74201644] [2021-06-01 17:33:24,185 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74201644] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:24,185 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:24,185 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:24,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793358846] [2021-06-01 17:33:24,185 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:24,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:24,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:24,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:24,186 INFO L87 Difference]: Start difference. First operand 1894 states and 7646 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:24,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:24,261 INFO L93 Difference]: Finished difference Result 3689 states and 14225 transitions. [2021-06-01 17:33:24,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:24,262 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:24,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:24,269 INFO L225 Difference]: With dead ends: 3689 [2021-06-01 17:33:24,269 INFO L226 Difference]: Without dead ends: 3366 [2021-06-01 17:33:24,269 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:24,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3366 states. [2021-06-01 17:33:24,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3366 to 1834. [2021-06-01 17:33:24,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1833 states have (on average 4.069285324604474) internal successors, (7459), 1833 states have internal predecessors, (7459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:24,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 7459 transitions. [2021-06-01 17:33:24,313 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 7459 transitions. Word has length 25 [2021-06-01 17:33:24,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:24,313 INFO L482 AbstractCegarLoop]: Abstraction has 1834 states and 7459 transitions. [2021-06-01 17:33:24,313 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:24,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 7459 transitions. [2021-06-01 17:33:24,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:24,315 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:24,315 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:24,315 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2021-06-01 17:33:24,316 INFO L430 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:24,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:24,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1430018689, now seen corresponding path program 217 times [2021-06-01 17:33:24,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:24,316 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830736672] [2021-06-01 17:33:24,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:24,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:24,391 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:24,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830736672] [2021-06-01 17:33:24,391 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830736672] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:24,391 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:24,391 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:24,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650639571] [2021-06-01 17:33:24,392 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:24,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:24,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:24,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:24,392 INFO L87 Difference]: Start difference. First operand 1834 states and 7459 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:24,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:24,459 INFO L93 Difference]: Finished difference Result 4355 states and 16847 transitions. [2021-06-01 17:33:24,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:24,459 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:24,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:24,467 INFO L225 Difference]: With dead ends: 4355 [2021-06-01 17:33:24,468 INFO L226 Difference]: Without dead ends: 4070 [2021-06-01 17:33:24,468 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:24,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4070 states. [2021-06-01 17:33:24,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4070 to 1919. [2021-06-01 17:33:24,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1919 states, 1918 states have (on average 4.064129301355579) internal successors, (7795), 1918 states have internal predecessors, (7795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:24,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1919 states to 1919 states and 7795 transitions. [2021-06-01 17:33:24,537 INFO L78 Accepts]: Start accepts. Automaton has 1919 states and 7795 transitions. Word has length 25 [2021-06-01 17:33:24,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:24,537 INFO L482 AbstractCegarLoop]: Abstraction has 1919 states and 7795 transitions. [2021-06-01 17:33:24,537 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:24,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1919 states and 7795 transitions. [2021-06-01 17:33:24,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:24,539 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:24,539 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:24,539 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2021-06-01 17:33:24,540 INFO L430 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:24,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:24,540 INFO L82 PathProgramCache]: Analyzing trace with hash -613318305, now seen corresponding path program 218 times [2021-06-01 17:33:24,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:24,540 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420918369] [2021-06-01 17:33:24,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:24,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:24,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:24,616 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:24,616 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420918369] [2021-06-01 17:33:24,616 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420918369] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:24,616 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:24,616 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:24,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868846203] [2021-06-01 17:33:24,617 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:24,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:24,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:24,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:24,617 INFO L87 Difference]: Start difference. First operand 1919 states and 7795 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:24,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:24,683 INFO L93 Difference]: Finished difference Result 4353 states and 16796 transitions. [2021-06-01 17:33:24,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:24,683 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:24,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:24,691 INFO L225 Difference]: With dead ends: 4353 [2021-06-01 17:33:24,691 INFO L226 Difference]: Without dead ends: 4024 [2021-06-01 17:33:24,692 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:24,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4024 states. [2021-06-01 17:33:24,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 1873. [2021-06-01 17:33:24,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1872 states have (on average 4.072649572649572) internal successors, (7624), 1872 states have internal predecessors, (7624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:24,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 7624 transitions. [2021-06-01 17:33:24,740 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 7624 transitions. Word has length 25 [2021-06-01 17:33:24,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:24,740 INFO L482 AbstractCegarLoop]: Abstraction has 1873 states and 7624 transitions. [2021-06-01 17:33:24,740 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:24,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 7624 transitions. [2021-06-01 17:33:24,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:24,743 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:24,743 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:24,743 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2021-06-01 17:33:24,743 INFO L430 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:24,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:24,743 INFO L82 PathProgramCache]: Analyzing trace with hash -686060961, now seen corresponding path program 219 times [2021-06-01 17:33:24,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:24,743 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950776988] [2021-06-01 17:33:24,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:24,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:24,827 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:24,828 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950776988] [2021-06-01 17:33:24,828 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950776988] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:24,828 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:24,828 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:24,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468547488] [2021-06-01 17:33:24,828 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:24,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:24,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:24,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:24,828 INFO L87 Difference]: Start difference. First operand 1873 states and 7624 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:24,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:24,896 INFO L93 Difference]: Finished difference Result 4325 states and 16710 transitions. [2021-06-01 17:33:24,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:24,897 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:24,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:24,905 INFO L225 Difference]: With dead ends: 4325 [2021-06-01 17:33:24,905 INFO L226 Difference]: Without dead ends: 4040 [2021-06-01 17:33:24,905 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:24,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4040 states. [2021-06-01 17:33:24,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4040 to 1909. [2021-06-01 17:33:24,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1909 states, 1908 states have (on average 4.058700209643606) internal successors, (7744), 1908 states have internal predecessors, (7744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:24,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1909 states to 1909 states and 7744 transitions. [2021-06-01 17:33:24,954 INFO L78 Accepts]: Start accepts. Automaton has 1909 states and 7744 transitions. Word has length 25 [2021-06-01 17:33:24,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:24,954 INFO L482 AbstractCegarLoop]: Abstraction has 1909 states and 7744 transitions. [2021-06-01 17:33:24,954 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:24,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1909 states and 7744 transitions. [2021-06-01 17:33:24,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:24,957 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:24,957 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:24,957 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2021-06-01 17:33:24,957 INFO L430 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:24,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:24,957 INFO L82 PathProgramCache]: Analyzing trace with hash -130272673, now seen corresponding path program 220 times [2021-06-01 17:33:24,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:24,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325706119] [2021-06-01 17:33:24,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:24,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:25,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:25,042 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:25,042 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325706119] [2021-06-01 17:33:25,042 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325706119] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:25,042 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:25,042 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:25,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736834502] [2021-06-01 17:33:25,043 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:25,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:25,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:25,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:25,043 INFO L87 Difference]: Start difference. First operand 1909 states and 7744 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:25,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:25,111 INFO L93 Difference]: Finished difference Result 4303 states and 16593 transitions. [2021-06-01 17:33:25,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:25,112 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:25,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:25,120 INFO L225 Difference]: With dead ends: 4303 [2021-06-01 17:33:25,120 INFO L226 Difference]: Without dead ends: 4004 [2021-06-01 17:33:25,120 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:25,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4004 states. [2021-06-01 17:33:25,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4004 to 1873. [2021-06-01 17:33:25,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1872 states have (on average 4.063034188034188) internal successors, (7606), 1872 states have internal predecessors, (7606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:25,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 7606 transitions. [2021-06-01 17:33:25,168 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 7606 transitions. Word has length 25 [2021-06-01 17:33:25,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:25,169 INFO L482 AbstractCegarLoop]: Abstraction has 1873 states and 7606 transitions. [2021-06-01 17:33:25,169 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:25,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 7606 transitions. [2021-06-01 17:33:25,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:25,171 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:25,171 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:25,171 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2021-06-01 17:33:25,171 INFO L430 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:25,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:25,171 INFO L82 PathProgramCache]: Analyzing trace with hash 296286653, now seen corresponding path program 221 times [2021-06-01 17:33:25,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:25,172 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955034696] [2021-06-01 17:33:25,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:25,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:25,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:25,246 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:25,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955034696] [2021-06-01 17:33:25,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955034696] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:25,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:25,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:25,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935502363] [2021-06-01 17:33:25,246 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:25,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:25,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:25,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:25,247 INFO L87 Difference]: Start difference. First operand 1873 states and 7606 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:25,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:25,314 INFO L93 Difference]: Finished difference Result 4321 states and 16682 transitions. [2021-06-01 17:33:25,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:25,314 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:25,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:25,322 INFO L225 Difference]: With dead ends: 4321 [2021-06-01 17:33:25,323 INFO L226 Difference]: Without dead ends: 4038 [2021-06-01 17:33:25,323 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:25,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4038 states. [2021-06-01 17:33:25,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4038 to 1909. [2021-06-01 17:33:25,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1909 states, 1908 states have (on average 4.049266247379455) internal successors, (7726), 1908 states have internal predecessors, (7726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:25,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1909 states to 1909 states and 7726 transitions. [2021-06-01 17:33:25,372 INFO L78 Accepts]: Start accepts. Automaton has 1909 states and 7726 transitions. Word has length 25 [2021-06-01 17:33:25,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:25,372 INFO L482 AbstractCegarLoop]: Abstraction has 1909 states and 7726 transitions. [2021-06-01 17:33:25,373 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:25,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1909 states and 7726 transitions. [2021-06-01 17:33:25,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:25,375 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:25,375 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:25,375 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2021-06-01 17:33:25,375 INFO L430 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:25,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:25,375 INFO L82 PathProgramCache]: Analyzing trace with hash 89478687, now seen corresponding path program 222 times [2021-06-01 17:33:25,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:25,376 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479896615] [2021-06-01 17:33:25,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:25,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:25,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:25,458 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:25,458 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479896615] [2021-06-01 17:33:25,458 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479896615] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:25,458 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:25,458 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:25,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235432233] [2021-06-01 17:33:25,458 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:25,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:25,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:25,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:25,458 INFO L87 Difference]: Start difference. First operand 1909 states and 7726 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:25,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:25,526 INFO L93 Difference]: Finished difference Result 4301 states and 16570 transitions. [2021-06-01 17:33:25,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:25,526 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:25,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:25,534 INFO L225 Difference]: With dead ends: 4301 [2021-06-01 17:33:25,534 INFO L226 Difference]: Without dead ends: 3984 [2021-06-01 17:33:25,535 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:25,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3984 states. [2021-06-01 17:33:25,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3984 to 1855. [2021-06-01 17:33:25,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1855 states, 1854 states have (on average 4.070118662351672) internal successors, (7546), 1854 states have internal predecessors, (7546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:25,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1855 states to 1855 states and 7546 transitions. [2021-06-01 17:33:25,583 INFO L78 Accepts]: Start accepts. Automaton has 1855 states and 7546 transitions. Word has length 25 [2021-06-01 17:33:25,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:25,583 INFO L482 AbstractCegarLoop]: Abstraction has 1855 states and 7546 transitions. [2021-06-01 17:33:25,583 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:25,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1855 states and 7546 transitions. [2021-06-01 17:33:25,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:25,586 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:25,586 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:25,586 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2021-06-01 17:33:25,586 INFO L430 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:25,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:25,586 INFO L82 PathProgramCache]: Analyzing trace with hash -533336225, now seen corresponding path program 223 times [2021-06-01 17:33:25,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:25,586 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348395809] [2021-06-01 17:33:25,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:25,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:25,661 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:25,661 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348395809] [2021-06-01 17:33:25,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348395809] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:25,661 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:25,661 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:25,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545395371] [2021-06-01 17:33:25,662 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:25,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:25,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:25,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:25,662 INFO L87 Difference]: Start difference. First operand 1855 states and 7546 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:25,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:25,737 INFO L93 Difference]: Finished difference Result 4461 states and 17211 transitions. [2021-06-01 17:33:25,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:25,749 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:25,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:25,760 INFO L225 Difference]: With dead ends: 4461 [2021-06-01 17:33:25,760 INFO L226 Difference]: Without dead ends: 4176 [2021-06-01 17:33:25,760 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:25,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4176 states. [2021-06-01 17:33:25,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4176 to 1948. [2021-06-01 17:33:25,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1948 states, 1947 states have (on average 4.054442732408834) internal successors, (7894), 1947 states have internal predecessors, (7894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:25,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 7894 transitions. [2021-06-01 17:33:25,819 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 7894 transitions. Word has length 25 [2021-06-01 17:33:25,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:25,819 INFO L482 AbstractCegarLoop]: Abstraction has 1948 states and 7894 transitions. [2021-06-01 17:33:25,819 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:25,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 7894 transitions. [2021-06-01 17:33:25,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:25,822 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:25,822 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:25,822 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2021-06-01 17:33:25,822 INFO L430 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:25,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:25,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1718294077, now seen corresponding path program 224 times [2021-06-01 17:33:25,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:25,823 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411372468] [2021-06-01 17:33:25,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:25,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:25,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:25,898 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:25,898 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411372468] [2021-06-01 17:33:25,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411372468] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:25,898 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:25,898 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:25,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034219190] [2021-06-01 17:33:25,898 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:25,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:25,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:25,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:25,898 INFO L87 Difference]: Start difference. First operand 1948 states and 7894 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:25,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:25,967 INFO L93 Difference]: Finished difference Result 4459 states and 17160 transitions. [2021-06-01 17:33:25,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:25,968 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:25,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:25,976 INFO L225 Difference]: With dead ends: 4459 [2021-06-01 17:33:25,976 INFO L226 Difference]: Without dead ends: 4130 [2021-06-01 17:33:25,976 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:25,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4130 states. [2021-06-01 17:33:26,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4130 to 1902. [2021-06-01 17:33:26,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1902 states, 1901 states have (on average 4.059968437664387) internal successors, (7718), 1901 states have internal predecessors, (7718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:26,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1902 states to 1902 states and 7718 transitions. [2021-06-01 17:33:26,028 INFO L78 Accepts]: Start accepts. Automaton has 1902 states and 7718 transitions. Word has length 25 [2021-06-01 17:33:26,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:26,028 INFO L482 AbstractCegarLoop]: Abstraction has 1902 states and 7718 transitions. [2021-06-01 17:33:26,028 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:26,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1902 states and 7718 transitions. [2021-06-01 17:33:26,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:26,030 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:26,030 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:26,030 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2021-06-01 17:33:26,030 INFO L430 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:26,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:26,031 INFO L82 PathProgramCache]: Analyzing trace with hash 585461727, now seen corresponding path program 225 times [2021-06-01 17:33:26,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:26,031 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068693136] [2021-06-01 17:33:26,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:26,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:26,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:26,107 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:26,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068693136] [2021-06-01 17:33:26,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068693136] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:26,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:26,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:26,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914228545] [2021-06-01 17:33:26,108 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:26,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:26,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:26,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:26,108 INFO L87 Difference]: Start difference. First operand 1902 states and 7718 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:26,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:26,187 INFO L93 Difference]: Finished difference Result 4529 states and 17422 transitions. [2021-06-01 17:33:26,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:26,187 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:26,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:26,196 INFO L225 Difference]: With dead ends: 4529 [2021-06-01 17:33:26,196 INFO L226 Difference]: Without dead ends: 4244 [2021-06-01 17:33:26,196 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:26,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4244 states. [2021-06-01 17:33:26,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4244 to 1981. [2021-06-01 17:33:26,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1981 states, 1980 states have (on average 4.032828282828283) internal successors, (7985), 1980 states have internal predecessors, (7985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:26,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 7985 transitions. [2021-06-01 17:33:26,247 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 7985 transitions. Word has length 25 [2021-06-01 17:33:26,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:26,247 INFO L482 AbstractCegarLoop]: Abstraction has 1981 states and 7985 transitions. [2021-06-01 17:33:26,247 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:26,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 7985 transitions. [2021-06-01 17:33:26,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:26,250 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:26,250 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:26,250 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2021-06-01 17:33:26,250 INFO L430 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:26,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:26,250 INFO L82 PathProgramCache]: Analyzing trace with hash 29673439, now seen corresponding path program 226 times [2021-06-01 17:33:26,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:26,250 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741644276] [2021-06-01 17:33:26,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:26,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:26,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:26,328 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:26,328 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741644276] [2021-06-01 17:33:26,328 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741644276] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:26,328 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:26,328 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:26,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36854826] [2021-06-01 17:33:26,329 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:26,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:26,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:26,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:26,329 INFO L87 Difference]: Start difference. First operand 1981 states and 7985 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:26,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:26,386 INFO L93 Difference]: Finished difference Result 4562 states and 17489 transitions. [2021-06-01 17:33:26,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:26,386 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:26,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:26,395 INFO L225 Difference]: With dead ends: 4562 [2021-06-01 17:33:26,395 INFO L226 Difference]: Without dead ends: 4165 [2021-06-01 17:33:26,395 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:26,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4165 states. [2021-06-01 17:33:26,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4165 to 1902. [2021-06-01 17:33:26,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1902 states, 1901 states have (on average 4.0394529195160445) internal successors, (7679), 1901 states have internal predecessors, (7679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:26,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1902 states to 1902 states and 7679 transitions. [2021-06-01 17:33:26,445 INFO L78 Accepts]: Start accepts. Automaton has 1902 states and 7679 transitions. Word has length 25 [2021-06-01 17:33:26,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:26,445 INFO L482 AbstractCegarLoop]: Abstraction has 1902 states and 7679 transitions. [2021-06-01 17:33:26,445 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:26,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1902 states and 7679 transitions. [2021-06-01 17:33:26,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:26,448 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:26,448 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:26,448 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2021-06-01 17:33:26,448 INFO L430 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:26,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:26,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1567809341, now seen corresponding path program 227 times [2021-06-01 17:33:26,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:26,448 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391038384] [2021-06-01 17:33:26,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:26,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:26,526 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:26,526 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391038384] [2021-06-01 17:33:26,526 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391038384] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:26,526 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:26,526 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:26,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221405762] [2021-06-01 17:33:26,526 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:26,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:26,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:26,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:26,527 INFO L87 Difference]: Start difference. First operand 1902 states and 7679 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:26,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:26,591 INFO L93 Difference]: Finished difference Result 4508 states and 17322 transitions. [2021-06-01 17:33:26,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:26,592 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:26,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:26,601 INFO L225 Difference]: With dead ends: 4508 [2021-06-01 17:33:26,601 INFO L226 Difference]: Without dead ends: 4225 [2021-06-01 17:33:26,601 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:26,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4225 states. [2021-06-01 17:33:26,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4225 to 1964. [2021-06-01 17:33:26,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1964 states, 1963 states have (on average 4.022414671421294) internal successors, (7896), 1963 states have internal predecessors, (7896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:26,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1964 states to 1964 states and 7896 transitions. [2021-06-01 17:33:26,652 INFO L78 Accepts]: Start accepts. Automaton has 1964 states and 7896 transitions. Word has length 25 [2021-06-01 17:33:26,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:26,652 INFO L482 AbstractCegarLoop]: Abstraction has 1964 states and 7896 transitions. [2021-06-01 17:33:26,652 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:26,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1964 states and 7896 transitions. [2021-06-01 17:33:26,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:26,655 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:26,655 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:26,655 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2021-06-01 17:33:26,655 INFO L430 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:26,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:26,655 INFO L82 PathProgramCache]: Analyzing trace with hash -789580257, now seen corresponding path program 228 times [2021-06-01 17:33:26,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:26,655 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648225837] [2021-06-01 17:33:26,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:26,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:26,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:26,732 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:26,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648225837] [2021-06-01 17:33:26,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648225837] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:26,732 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:26,732 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:26,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540414859] [2021-06-01 17:33:26,732 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:26,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:26,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:26,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:26,733 INFO L87 Difference]: Start difference. First operand 1964 states and 7896 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:26,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:26,789 INFO L93 Difference]: Finished difference Result 4543 states and 17395 transitions. [2021-06-01 17:33:26,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:26,789 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:26,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:26,798 INFO L225 Difference]: With dead ends: 4543 [2021-06-01 17:33:26,798 INFO L226 Difference]: Without dead ends: 4116 [2021-06-01 17:33:26,798 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:26,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4116 states. [2021-06-01 17:33:26,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4116 to 1855. [2021-06-01 17:33:26,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1855 states, 1854 states have (on average 4.058791801510248) internal successors, (7525), 1854 states have internal predecessors, (7525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:26,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1855 states to 1855 states and 7525 transitions. [2021-06-01 17:33:26,860 INFO L78 Accepts]: Start accepts. Automaton has 1855 states and 7525 transitions. Word has length 25 [2021-06-01 17:33:26,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:26,860 INFO L482 AbstractCegarLoop]: Abstraction has 1855 states and 7525 transitions. [2021-06-01 17:33:26,860 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:26,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1855 states and 7525 transitions. [2021-06-01 17:33:26,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:26,862 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:26,862 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:26,862 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2021-06-01 17:33:26,862 INFO L430 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:26,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:26,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1625649213, now seen corresponding path program 229 times [2021-06-01 17:33:26,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:26,863 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405692468] [2021-06-01 17:33:26,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:26,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:26,955 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:26,955 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405692468] [2021-06-01 17:33:26,955 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405692468] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:26,955 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:26,955 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:26,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310927064] [2021-06-01 17:33:26,955 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:26,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:26,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:26,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:26,955 INFO L87 Difference]: Start difference. First operand 1855 states and 7525 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:27,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:27,019 INFO L93 Difference]: Finished difference Result 4378 states and 16865 transitions. [2021-06-01 17:33:27,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:27,019 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:27,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:27,028 INFO L225 Difference]: With dead ends: 4378 [2021-06-01 17:33:27,028 INFO L226 Difference]: Without dead ends: 4093 [2021-06-01 17:33:27,028 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:27,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4093 states. [2021-06-01 17:33:27,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4093 to 1925. [2021-06-01 17:33:27,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1925 states, 1924 states have (on average 4.051975051975052) internal successors, (7796), 1924 states have internal predecessors, (7796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:27,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 7796 transitions. [2021-06-01 17:33:27,079 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 7796 transitions. Word has length 25 [2021-06-01 17:33:27,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:27,079 INFO L482 AbstractCegarLoop]: Abstraction has 1925 states and 7796 transitions. [2021-06-01 17:33:27,079 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:27,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 7796 transitions. [2021-06-01 17:33:27,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:27,081 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:27,081 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:27,081 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2021-06-01 17:33:27,081 INFO L430 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:27,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:27,082 INFO L82 PathProgramCache]: Analyzing trace with hash -2113529795, now seen corresponding path program 230 times [2021-06-01 17:33:27,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:27,082 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797527544] [2021-06-01 17:33:27,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:27,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:27,174 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:27,174 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797527544] [2021-06-01 17:33:27,174 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797527544] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:27,174 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:27,174 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:27,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470264769] [2021-06-01 17:33:27,174 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:27,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:27,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:27,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:27,174 INFO L87 Difference]: Start difference. First operand 1925 states and 7796 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:27,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:27,238 INFO L93 Difference]: Finished difference Result 4356 states and 16748 transitions. [2021-06-01 17:33:27,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:27,238 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:27,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:27,247 INFO L225 Difference]: With dead ends: 4356 [2021-06-01 17:33:27,247 INFO L226 Difference]: Without dead ends: 4057 [2021-06-01 17:33:27,247 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:27,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4057 states. [2021-06-01 17:33:27,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4057 to 1889. [2021-06-01 17:33:27,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1889 states, 1888 states have (on average 4.05614406779661) internal successors, (7658), 1888 states have internal predecessors, (7658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:27,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 7658 transitions. [2021-06-01 17:33:27,296 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 7658 transitions. Word has length 25 [2021-06-01 17:33:27,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:27,296 INFO L482 AbstractCegarLoop]: Abstraction has 1889 states and 7658 transitions. [2021-06-01 17:33:27,296 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:27,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 7658 transitions. [2021-06-01 17:33:27,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:27,298 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:27,298 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:27,298 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2021-06-01 17:33:27,298 INFO L430 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:27,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:27,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1008125855, now seen corresponding path program 231 times [2021-06-01 17:33:27,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:27,299 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27543839] [2021-06-01 17:33:27,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:27,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:27,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:27,382 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:27,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27543839] [2021-06-01 17:33:27,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27543839] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:27,382 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:27,382 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:27,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240542849] [2021-06-01 17:33:27,383 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:27,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:27,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:27,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:27,383 INFO L87 Difference]: Start difference. First operand 1889 states and 7658 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:27,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:27,447 INFO L93 Difference]: Finished difference Result 4397 states and 16886 transitions. [2021-06-01 17:33:27,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:27,447 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:27,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:27,455 INFO L225 Difference]: With dead ends: 4397 [2021-06-01 17:33:27,456 INFO L226 Difference]: Without dead ends: 4112 [2021-06-01 17:33:27,456 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:27,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4112 states. [2021-06-01 17:33:27,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4112 to 1968. [2021-06-01 17:33:27,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1968 states, 1967 states have (on average 4.028978139298424) internal successors, (7925), 1967 states have internal predecessors, (7925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:27,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1968 states to 1968 states and 7925 transitions. [2021-06-01 17:33:27,509 INFO L78 Accepts]: Start accepts. Automaton has 1968 states and 7925 transitions. Word has length 25 [2021-06-01 17:33:27,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:27,509 INFO L482 AbstractCegarLoop]: Abstraction has 1968 states and 7925 transitions. [2021-06-01 17:33:27,509 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:27,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1968 states and 7925 transitions. [2021-06-01 17:33:27,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:27,512 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:27,512 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:27,512 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2021-06-01 17:33:27,512 INFO L430 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:27,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:27,512 INFO L82 PathProgramCache]: Analyzing trace with hash -2003339203, now seen corresponding path program 232 times [2021-06-01 17:33:27,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:27,512 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637137642] [2021-06-01 17:33:27,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:27,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:27,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:27,603 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:27,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637137642] [2021-06-01 17:33:27,603 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637137642] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:27,603 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:27,603 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:27,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016626683] [2021-06-01 17:33:27,603 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:27,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:27,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:27,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:27,603 INFO L87 Difference]: Start difference. First operand 1968 states and 7925 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:27,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:27,660 INFO L93 Difference]: Finished difference Result 4430 states and 16953 transitions. [2021-06-01 17:33:27,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:27,661 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:27,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:27,669 INFO L225 Difference]: With dead ends: 4430 [2021-06-01 17:33:27,669 INFO L226 Difference]: Without dead ends: 4033 [2021-06-01 17:33:27,670 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:27,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4033 states. [2021-06-01 17:33:27,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4033 to 1889. [2021-06-01 17:33:27,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1889 states, 1888 states have (on average 4.038135593220339) internal successors, (7624), 1888 states have internal predecessors, (7624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:27,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 7624 transitions. [2021-06-01 17:33:27,720 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 7624 transitions. Word has length 25 [2021-06-01 17:33:27,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:27,720 INFO L482 AbstractCegarLoop]: Abstraction has 1889 states and 7624 transitions. [2021-06-01 17:33:27,720 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:27,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 7624 transitions. [2021-06-01 17:33:27,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:27,722 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:27,722 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:27,722 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2021-06-01 17:33:27,723 INFO L430 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:27,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:27,723 INFO L82 PathProgramCache]: Analyzing trace with hash 644837437, now seen corresponding path program 233 times [2021-06-01 17:33:27,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:27,723 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775962422] [2021-06-01 17:33:27,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:27,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:27,832 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:27,832 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775962422] [2021-06-01 17:33:27,832 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775962422] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:27,832 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:27,832 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:27,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142416998] [2021-06-01 17:33:27,832 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:27,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:27,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:27,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:27,833 INFO L87 Difference]: Start difference. First operand 1889 states and 7624 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:27,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:27,897 INFO L93 Difference]: Finished difference Result 4326 states and 16596 transitions. [2021-06-01 17:33:27,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:27,897 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:27,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:27,905 INFO L225 Difference]: With dead ends: 4326 [2021-06-01 17:33:27,905 INFO L226 Difference]: Without dead ends: 4063 [2021-06-01 17:33:27,906 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 124.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:27,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4063 states. [2021-06-01 17:33:27,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4063 to 1941. [2021-06-01 17:33:27,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1941 states, 1940 states have (on average 4.024742268041237) internal successors, (7808), 1940 states have internal predecessors, (7808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:27,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1941 states to 1941 states and 7808 transitions. [2021-06-01 17:33:27,955 INFO L78 Accepts]: Start accepts. Automaton has 1941 states and 7808 transitions. Word has length 25 [2021-06-01 17:33:27,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:27,955 INFO L482 AbstractCegarLoop]: Abstraction has 1941 states and 7808 transitions. [2021-06-01 17:33:27,955 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:27,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1941 states and 7808 transitions. [2021-06-01 17:33:27,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:27,958 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:27,958 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:27,958 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2021-06-01 17:33:27,958 INFO L430 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:27,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:27,958 INFO L82 PathProgramCache]: Analyzing trace with hash 863189023, now seen corresponding path program 234 times [2021-06-01 17:33:27,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:27,958 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284727380] [2021-06-01 17:33:27,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:27,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:28,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:28,050 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:28,050 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284727380] [2021-06-01 17:33:28,050 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284727380] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:28,050 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:28,050 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:28,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411864231] [2021-06-01 17:33:28,050 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:28,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:28,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:28,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:28,051 INFO L87 Difference]: Start difference. First operand 1941 states and 7808 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:28,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:28,108 INFO L93 Difference]: Finished difference Result 4254 states and 16284 transitions. [2021-06-01 17:33:28,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:28,108 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:28,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:28,116 INFO L225 Difference]: With dead ends: 4254 [2021-06-01 17:33:28,116 INFO L226 Difference]: Without dead ends: 3850 [2021-06-01 17:33:28,116 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:28,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3850 states. [2021-06-01 17:33:28,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3850 to 1855. [2021-06-01 17:33:28,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1855 states, 1854 states have (on average 4.049622437971952) internal successors, (7508), 1854 states have internal predecessors, (7508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:28,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1855 states to 1855 states and 7508 transitions. [2021-06-01 17:33:28,163 INFO L78 Accepts]: Start accepts. Automaton has 1855 states and 7508 transitions. Word has length 25 [2021-06-01 17:33:28,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:28,163 INFO L482 AbstractCegarLoop]: Abstraction has 1855 states and 7508 transitions. [2021-06-01 17:33:28,163 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:28,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1855 states and 7508 transitions. [2021-06-01 17:33:28,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:28,166 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:28,166 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:28,166 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2021-06-01 17:33:28,166 INFO L430 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:28,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:28,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1696921573, now seen corresponding path program 235 times [2021-06-01 17:33:28,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:28,166 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708227848] [2021-06-01 17:33:28,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:28,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:28,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:28,251 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:28,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708227848] [2021-06-01 17:33:28,251 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708227848] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:28,252 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:28,252 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:28,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296051541] [2021-06-01 17:33:28,252 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:28,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:28,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:28,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:28,252 INFO L87 Difference]: Start difference. First operand 1855 states and 7508 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:28,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:28,318 INFO L93 Difference]: Finished difference Result 4347 states and 16754 transitions. [2021-06-01 17:33:28,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:28,318 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:28,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:28,327 INFO L225 Difference]: With dead ends: 4347 [2021-06-01 17:33:28,327 INFO L226 Difference]: Without dead ends: 4064 [2021-06-01 17:33:28,327 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:28,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4064 states. [2021-06-01 17:33:28,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4064 to 1917. [2021-06-01 17:33:28,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1917 states, 1916 states have (on average 4.0454070981210855) internal successors, (7751), 1916 states have internal predecessors, (7751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:28,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 7751 transitions. [2021-06-01 17:33:28,376 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 7751 transitions. Word has length 25 [2021-06-01 17:33:28,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:28,376 INFO L482 AbstractCegarLoop]: Abstraction has 1917 states and 7751 transitions. [2021-06-01 17:33:28,376 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:28,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 7751 transitions. [2021-06-01 17:33:28,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:28,379 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:28,379 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:28,379 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2021-06-01 17:33:28,379 INFO L430 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:28,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:28,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1903729539, now seen corresponding path program 236 times [2021-06-01 17:33:28,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:28,379 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579983803] [2021-06-01 17:33:28,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:28,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:28,466 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:28,466 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579983803] [2021-06-01 17:33:28,466 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579983803] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:28,466 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:28,466 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:28,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934646653] [2021-06-01 17:33:28,466 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:28,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:28,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:28,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:28,466 INFO L87 Difference]: Start difference. First operand 1917 states and 7751 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:28,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:28,533 INFO L93 Difference]: Finished difference Result 4327 states and 16642 transitions. [2021-06-01 17:33:28,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:28,533 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:28,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:28,541 INFO L225 Difference]: With dead ends: 4327 [2021-06-01 17:33:28,541 INFO L226 Difference]: Without dead ends: 4028 [2021-06-01 17:33:28,541 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:28,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4028 states. [2021-06-01 17:33:28,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4028 to 1881. [2021-06-01 17:33:28,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1881 states, 1880 states have (on average 4.049468085106383) internal successors, (7613), 1880 states have internal predecessors, (7613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:28,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 7613 transitions. [2021-06-01 17:33:28,590 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 7613 transitions. Word has length 25 [2021-06-01 17:33:28,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:28,590 INFO L482 AbstractCegarLoop]: Abstraction has 1881 states and 7613 transitions. [2021-06-01 17:33:28,590 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:28,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 7613 transitions. [2021-06-01 17:33:28,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:28,593 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:28,593 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:28,593 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2021-06-01 17:33:28,593 INFO L430 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:28,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:28,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1980522365, now seen corresponding path program 237 times [2021-06-01 17:33:28,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:28,593 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699702277] [2021-06-01 17:33:28,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:28,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:28,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:28,668 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:28,668 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699702277] [2021-06-01 17:33:28,668 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699702277] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:28,668 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:28,668 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:28,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024285737] [2021-06-01 17:33:28,669 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:28,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:28,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:28,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:28,669 INFO L87 Difference]: Start difference. First operand 1881 states and 7613 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:28,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:28,740 INFO L93 Difference]: Finished difference Result 4366 states and 16775 transitions. [2021-06-01 17:33:28,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:28,741 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:28,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:28,749 INFO L225 Difference]: With dead ends: 4366 [2021-06-01 17:33:28,749 INFO L226 Difference]: Without dead ends: 4083 [2021-06-01 17:33:28,749 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:28,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4083 states. [2021-06-01 17:33:28,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4083 to 1943. [2021-06-01 17:33:28,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1943 states, 1942 states have (on average 4.0319258496395465) internal successors, (7830), 1942 states have internal predecessors, (7830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:28,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1943 states to 1943 states and 7830 transitions. [2021-06-01 17:33:28,799 INFO L78 Accepts]: Start accepts. Automaton has 1943 states and 7830 transitions. Word has length 25 [2021-06-01 17:33:28,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:28,799 INFO L482 AbstractCegarLoop]: Abstraction has 1943 states and 7830 transitions. [2021-06-01 17:33:28,799 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:28,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1943 states and 7830 transitions. [2021-06-01 17:33:28,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:28,802 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:28,802 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:28,802 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2021-06-01 17:33:28,802 INFO L430 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:28,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:28,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1462423293, now seen corresponding path program 238 times [2021-06-01 17:33:28,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:28,802 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623720927] [2021-06-01 17:33:28,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:28,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:28,878 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:28,878 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623720927] [2021-06-01 17:33:28,878 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623720927] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:28,878 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:28,878 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:28,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399261725] [2021-06-01 17:33:28,878 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:28,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:28,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:28,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:28,879 INFO L87 Difference]: Start difference. First operand 1943 states and 7830 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:28,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:28,937 INFO L93 Difference]: Finished difference Result 4401 states and 16848 transitions. [2021-06-01 17:33:28,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:28,937 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:28,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:28,945 INFO L225 Difference]: With dead ends: 4401 [2021-06-01 17:33:28,946 INFO L226 Difference]: Without dead ends: 4021 [2021-06-01 17:33:28,946 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:28,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4021 states. [2021-06-01 17:33:28,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4021 to 1881. [2021-06-01 17:33:28,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1881 states, 1880 states have (on average 4.035638297872341) internal successors, (7587), 1880 states have internal predecessors, (7587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:28,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 7587 transitions. [2021-06-01 17:33:28,994 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 7587 transitions. Word has length 25 [2021-06-01 17:33:28,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:28,994 INFO L482 AbstractCegarLoop]: Abstraction has 1881 states and 7587 transitions. [2021-06-01 17:33:28,994 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:28,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 7587 transitions. [2021-06-01 17:33:28,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:28,996 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:28,996 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:28,996 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2021-06-01 17:33:28,996 INFO L430 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:28,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:28,997 INFO L82 PathProgramCache]: Analyzing trace with hash 387599071, now seen corresponding path program 239 times [2021-06-01 17:33:28,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:28,997 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541764569] [2021-06-01 17:33:28,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:29,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:29,082 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:29,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541764569] [2021-06-01 17:33:29,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541764569] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:29,082 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:29,082 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:29,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911368830] [2021-06-01 17:33:29,082 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:29,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:29,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:29,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:29,083 INFO L87 Difference]: Start difference. First operand 1881 states and 7587 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:29,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:29,165 INFO L93 Difference]: Finished difference Result 4316 states and 16554 transitions. [2021-06-01 17:33:29,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:29,165 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:29,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:29,174 INFO L225 Difference]: With dead ends: 4316 [2021-06-01 17:33:29,174 INFO L226 Difference]: Without dead ends: 4053 [2021-06-01 17:33:29,174 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:29,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4053 states. [2021-06-01 17:33:29,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4053 to 1933. [2021-06-01 17:33:29,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1933 states, 1932 states have (on average 4.022256728778468) internal successors, (7771), 1932 states have internal predecessors, (7771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:29,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 7771 transitions. [2021-06-01 17:33:29,224 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 7771 transitions. Word has length 25 [2021-06-01 17:33:29,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:29,224 INFO L482 AbstractCegarLoop]: Abstraction has 1933 states and 7771 transitions. [2021-06-01 17:33:29,224 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:29,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 7771 transitions. [2021-06-01 17:33:29,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:29,227 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:29,227 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:29,227 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2021-06-01 17:33:29,227 INFO L430 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:29,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:29,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1433436355, now seen corresponding path program 240 times [2021-06-01 17:33:29,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:29,227 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363441404] [2021-06-01 17:33:29,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:29,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:29,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:29,313 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:29,313 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363441404] [2021-06-01 17:33:29,313 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363441404] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:29,313 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:29,314 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:29,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482399329] [2021-06-01 17:33:29,314 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:29,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:29,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:29,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:29,314 INFO L87 Difference]: Start difference. First operand 1933 states and 7771 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:29,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:29,370 INFO L93 Difference]: Finished difference Result 4244 states and 16242 transitions. [2021-06-01 17:33:29,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:29,371 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:29,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:29,378 INFO L225 Difference]: With dead ends: 4244 [2021-06-01 17:33:29,379 INFO L226 Difference]: Without dead ends: 3818 [2021-06-01 17:33:29,379 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 90.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:29,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3818 states. [2021-06-01 17:33:29,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3818 to 1825. [2021-06-01 17:33:29,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1825 states, 1824 states have (on average 4.076206140350878) internal successors, (7435), 1824 states have internal predecessors, (7435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:29,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1825 states to 1825 states and 7435 transitions. [2021-06-01 17:33:29,425 INFO L78 Accepts]: Start accepts. Automaton has 1825 states and 7435 transitions. Word has length 25 [2021-06-01 17:33:29,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:29,426 INFO L482 AbstractCegarLoop]: Abstraction has 1825 states and 7435 transitions. [2021-06-01 17:33:29,426 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:29,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1825 states and 7435 transitions. [2021-06-01 17:33:29,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:29,428 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:29,428 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:29,428 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2021-06-01 17:33:29,428 INFO L430 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:29,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:29,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1478845923, now seen corresponding path program 241 times [2021-06-01 17:33:29,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:29,428 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171345249] [2021-06-01 17:33:29,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:29,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:29,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:29,516 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:29,516 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171345249] [2021-06-01 17:33:29,516 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171345249] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:29,516 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:29,516 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:29,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871946071] [2021-06-01 17:33:29,516 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:29,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:29,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:29,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:29,517 INFO L87 Difference]: Start difference. First operand 1825 states and 7435 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:29,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:29,578 INFO L93 Difference]: Finished difference Result 4151 states and 15832 transitions. [2021-06-01 17:33:29,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:29,579 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:29,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:29,586 INFO L225 Difference]: With dead ends: 4151 [2021-06-01 17:33:29,586 INFO L226 Difference]: Without dead ends: 3904 [2021-06-01 17:33:29,587 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:29,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3904 states. [2021-06-01 17:33:29,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3904 to 1899. [2021-06-01 17:33:29,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1899 states, 1898 states have (on average 4.065331928345627) internal successors, (7716), 1898 states have internal predecessors, (7716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:29,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1899 states to 1899 states and 7716 transitions. [2021-06-01 17:33:29,634 INFO L78 Accepts]: Start accepts. Automaton has 1899 states and 7716 transitions. Word has length 25 [2021-06-01 17:33:29,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:29,634 INFO L482 AbstractCegarLoop]: Abstraction has 1899 states and 7716 transitions. [2021-06-01 17:33:29,634 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:29,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1899 states and 7716 transitions. [2021-06-01 17:33:29,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:29,636 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:29,637 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:29,637 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2021-06-01 17:33:29,637 INFO L430 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:29,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:29,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1184174207, now seen corresponding path program 242 times [2021-06-01 17:33:29,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:29,637 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380099127] [2021-06-01 17:33:29,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:29,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:29,743 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:29,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380099127] [2021-06-01 17:33:29,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380099127] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:29,743 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:29,743 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:29,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641497491] [2021-06-01 17:33:29,744 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:29,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:29,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:29,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:29,744 INFO L87 Difference]: Start difference. First operand 1899 states and 7716 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:29,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:29,802 INFO L93 Difference]: Finished difference Result 4222 states and 16071 transitions. [2021-06-01 17:33:29,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:29,803 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:29,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:29,810 INFO L225 Difference]: With dead ends: 4222 [2021-06-01 17:33:29,810 INFO L226 Difference]: Without dead ends: 3860 [2021-06-01 17:33:29,811 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:29,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3860 states. [2021-06-01 17:33:29,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3860 to 1855. [2021-06-01 17:33:29,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1855 states, 1854 states have (on average 4.067961165048544) internal successors, (7542), 1854 states have internal predecessors, (7542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:29,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1855 states to 1855 states and 7542 transitions. [2021-06-01 17:33:29,857 INFO L78 Accepts]: Start accepts. Automaton has 1855 states and 7542 transitions. Word has length 25 [2021-06-01 17:33:29,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:29,857 INFO L482 AbstractCegarLoop]: Abstraction has 1855 states and 7542 transitions. [2021-06-01 17:33:29,857 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:29,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1855 states and 7542 transitions. [2021-06-01 17:33:29,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:29,860 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:29,860 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:29,860 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2021-06-01 17:33:29,860 INFO L430 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:29,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:29,861 INFO L82 PathProgramCache]: Analyzing trace with hash -233717445, now seen corresponding path program 243 times [2021-06-01 17:33:29,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:29,861 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531785847] [2021-06-01 17:33:29,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:29,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:29,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:29,952 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:29,952 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531785847] [2021-06-01 17:33:29,952 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531785847] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:29,952 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:29,952 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:29,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181457283] [2021-06-01 17:33:29,952 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:29,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:29,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:29,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:29,953 INFO L87 Difference]: Start difference. First operand 1855 states and 7542 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:30,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:30,013 INFO L93 Difference]: Finished difference Result 4102 states and 15632 transitions. [2021-06-01 17:33:30,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:30,013 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:30,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:30,021 INFO L225 Difference]: With dead ends: 4102 [2021-06-01 17:33:30,021 INFO L226 Difference]: Without dead ends: 3855 [2021-06-01 17:33:30,021 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:30,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3855 states. [2021-06-01 17:33:30,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3855 to 1883. [2021-06-01 17:33:30,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1883 states, 1882 states have (on average 4.054197662061637) internal successors, (7630), 1882 states have internal predecessors, (7630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:30,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 7630 transitions. [2021-06-01 17:33:30,068 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 7630 transitions. Word has length 25 [2021-06-01 17:33:30,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:30,068 INFO L482 AbstractCegarLoop]: Abstraction has 1883 states and 7630 transitions. [2021-06-01 17:33:30,068 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:30,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 7630 transitions. [2021-06-01 17:33:30,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:30,071 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:30,071 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:30,071 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2021-06-01 17:33:30,071 INFO L430 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:30,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:30,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1823652195, now seen corresponding path program 244 times [2021-06-01 17:33:30,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:30,071 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582188539] [2021-06-01 17:33:30,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:30,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:30,159 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:30,159 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582188539] [2021-06-01 17:33:30,159 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582188539] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:30,159 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:30,159 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:30,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532465195] [2021-06-01 17:33:30,159 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:30,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:30,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:30,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:30,159 INFO L87 Difference]: Start difference. First operand 1883 states and 7630 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:30,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:30,233 INFO L93 Difference]: Finished difference Result 4140 states and 15757 transitions. [2021-06-01 17:33:30,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:30,233 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:30,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:30,241 INFO L225 Difference]: With dead ends: 4140 [2021-06-01 17:33:30,241 INFO L226 Difference]: Without dead ends: 3827 [2021-06-01 17:33:30,241 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:30,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3827 states. [2021-06-01 17:33:30,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3827 to 1855. [2021-06-01 17:33:30,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1855 states, 1854 states have (on average 4.060409924487594) internal successors, (7528), 1854 states have internal predecessors, (7528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:30,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1855 states to 1855 states and 7528 transitions. [2021-06-01 17:33:30,288 INFO L78 Accepts]: Start accepts. Automaton has 1855 states and 7528 transitions. Word has length 25 [2021-06-01 17:33:30,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:30,288 INFO L482 AbstractCegarLoop]: Abstraction has 1855 states and 7528 transitions. [2021-06-01 17:33:30,288 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:30,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1855 states and 7528 transitions. [2021-06-01 17:33:30,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:30,291 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:30,291 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:30,291 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2021-06-01 17:33:30,291 INFO L430 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:30,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:30,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1833151615, now seen corresponding path program 245 times [2021-06-01 17:33:30,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:30,291 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024142349] [2021-06-01 17:33:30,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:30,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:30,372 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:30,372 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024142349] [2021-06-01 17:33:30,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024142349] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:30,372 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:30,372 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:30,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288973622] [2021-06-01 17:33:30,372 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:30,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:30,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:30,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:30,373 INFO L87 Difference]: Start difference. First operand 1855 states and 7528 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:30,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:30,444 INFO L93 Difference]: Finished difference Result 4262 states and 16236 transitions. [2021-06-01 17:33:30,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:30,445 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:30,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:30,453 INFO L225 Difference]: With dead ends: 4262 [2021-06-01 17:33:30,453 INFO L226 Difference]: Without dead ends: 3977 [2021-06-01 17:33:30,453 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:30,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3977 states. [2021-06-01 17:33:30,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3977 to 1934. [2021-06-01 17:33:30,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1934 states, 1933 states have (on average 4.032591826176927) internal successors, (7795), 1933 states have internal predecessors, (7795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:30,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 7795 transitions. [2021-06-01 17:33:30,501 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 7795 transitions. Word has length 25 [2021-06-01 17:33:30,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:30,502 INFO L482 AbstractCegarLoop]: Abstraction has 1934 states and 7795 transitions. [2021-06-01 17:33:30,502 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:30,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 7795 transitions. [2021-06-01 17:33:30,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:30,504 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:30,504 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:30,504 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2021-06-01 17:33:30,504 INFO L430 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:30,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:30,504 INFO L82 PathProgramCache]: Analyzing trace with hash 2131204573, now seen corresponding path program 246 times [2021-06-01 17:33:30,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:30,505 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323528070] [2021-06-01 17:33:30,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:30,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:30,586 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:30,586 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323528070] [2021-06-01 17:33:30,586 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323528070] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:30,586 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:30,586 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:30,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088932354] [2021-06-01 17:33:30,587 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:30,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:30,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:30,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:30,587 INFO L87 Difference]: Start difference. First operand 1934 states and 7795 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:30,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:30,648 INFO L93 Difference]: Finished difference Result 4295 states and 16303 transitions. [2021-06-01 17:33:30,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:30,648 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:30,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:30,656 INFO L225 Difference]: With dead ends: 4295 [2021-06-01 17:33:30,656 INFO L226 Difference]: Without dead ends: 3868 [2021-06-01 17:33:30,656 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 86.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:30,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3868 states. [2021-06-01 17:33:30,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3868 to 1825. [2021-06-01 17:33:30,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1825 states, 1824 states have (on average 4.069627192982456) internal successors, (7423), 1824 states have internal predecessors, (7423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:30,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1825 states to 1825 states and 7423 transitions. [2021-06-01 17:33:30,705 INFO L78 Accepts]: Start accepts. Automaton has 1825 states and 7423 transitions. Word has length 25 [2021-06-01 17:33:30,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:30,705 INFO L482 AbstractCegarLoop]: Abstraction has 1825 states and 7423 transitions. [2021-06-01 17:33:30,705 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:30,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1825 states and 7423 transitions. [2021-06-01 17:33:30,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:30,708 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:30,708 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:30,708 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2021-06-01 17:33:30,708 INFO L430 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:30,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:30,708 INFO L82 PathProgramCache]: Analyzing trace with hash -179666245, now seen corresponding path program 247 times [2021-06-01 17:33:30,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:30,708 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528035190] [2021-06-01 17:33:30,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:30,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:30,798 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:30,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528035190] [2021-06-01 17:33:30,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528035190] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:30,798 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:30,798 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:30,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525183292] [2021-06-01 17:33:30,798 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:30,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:30,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:30,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:30,799 INFO L87 Difference]: Start difference. First operand 1825 states and 7423 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:30,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:30,856 INFO L93 Difference]: Finished difference Result 4052 states and 15424 transitions. [2021-06-01 17:33:30,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:30,856 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:30,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:30,864 INFO L225 Difference]: With dead ends: 4052 [2021-06-01 17:33:30,864 INFO L226 Difference]: Without dead ends: 3805 [2021-06-01 17:33:30,865 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:30,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3805 states. [2021-06-01 17:33:30,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3805 to 1885. [2021-06-01 17:33:30,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1885 states, 1884 states have (on average 4.058917197452229) internal successors, (7647), 1884 states have internal predecessors, (7647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:30,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 7647 transitions. [2021-06-01 17:33:30,916 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 7647 transitions. Word has length 25 [2021-06-01 17:33:30,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:30,916 INFO L482 AbstractCegarLoop]: Abstraction has 1885 states and 7647 transitions. [2021-06-01 17:33:30,916 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:30,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 7647 transitions. [2021-06-01 17:33:30,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:30,919 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:30,919 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:30,919 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2021-06-01 17:33:30,919 INFO L430 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:30,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:30,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1811613411, now seen corresponding path program 248 times [2021-06-01 17:33:30,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:30,919 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644606906] [2021-06-01 17:33:30,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:30,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:31,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:31,010 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:31,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644606906] [2021-06-01 17:33:31,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644606906] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:31,011 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:31,011 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:31,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318613383] [2021-06-01 17:33:31,011 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:31,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:31,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:31,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:31,011 INFO L87 Difference]: Start difference. First operand 1885 states and 7647 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:31,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:31,068 INFO L93 Difference]: Finished difference Result 4123 states and 15663 transitions. [2021-06-01 17:33:31,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:31,068 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:31,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:31,076 INFO L225 Difference]: With dead ends: 4123 [2021-06-01 17:33:31,076 INFO L226 Difference]: Without dead ends: 3761 [2021-06-01 17:33:31,076 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:31,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3761 states. [2021-06-01 17:33:31,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3761 to 1841. [2021-06-01 17:33:31,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 4.064673913043478) internal successors, (7479), 1840 states have internal predecessors, (7479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:31,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 7479 transitions. [2021-06-01 17:33:31,123 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 7479 transitions. Word has length 25 [2021-06-01 17:33:31,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:31,123 INFO L482 AbstractCegarLoop]: Abstraction has 1841 states and 7479 transitions. [2021-06-01 17:33:31,123 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:31,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 7479 transitions. [2021-06-01 17:33:31,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:31,125 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:31,126 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:31,126 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2021-06-01 17:33:31,126 INFO L430 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:31,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:31,126 INFO L82 PathProgramCache]: Analyzing trace with hash -2119464325, now seen corresponding path program 249 times [2021-06-01 17:33:31,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:31,126 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946655092] [2021-06-01 17:33:31,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:31,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:31,215 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:31,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946655092] [2021-06-01 17:33:31,215 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946655092] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:31,215 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:31,215 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:31,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413029230] [2021-06-01 17:33:31,216 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:31,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:31,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:31,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:31,216 INFO L87 Difference]: Start difference. First operand 1841 states and 7479 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:31,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:31,278 INFO L93 Difference]: Finished difference Result 3953 states and 15025 transitions. [2021-06-01 17:33:31,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:31,279 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:31,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:31,288 INFO L225 Difference]: With dead ends: 3953 [2021-06-01 17:33:31,288 INFO L226 Difference]: Without dead ends: 3706 [2021-06-01 17:33:31,288 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:31,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3706 states. [2021-06-01 17:33:31,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3706 to 1857. [2021-06-01 17:33:31,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1857 states, 1856 states have (on average 4.055495689655173) internal successors, (7527), 1856 states have internal predecessors, (7527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:31,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1857 states to 1857 states and 7527 transitions. [2021-06-01 17:33:31,335 INFO L78 Accepts]: Start accepts. Automaton has 1857 states and 7527 transitions. Word has length 25 [2021-06-01 17:33:31,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:31,335 INFO L482 AbstractCegarLoop]: Abstraction has 1857 states and 7527 transitions. [2021-06-01 17:33:31,335 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:31,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1857 states and 7527 transitions. [2021-06-01 17:33:31,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:31,338 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:31,338 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:31,338 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2021-06-01 17:33:31,338 INFO L430 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:31,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:31,338 INFO L82 PathProgramCache]: Analyzing trace with hash 627580637, now seen corresponding path program 250 times [2021-06-01 17:33:31,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:31,339 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900824764] [2021-06-01 17:33:31,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:31,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:31,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:31,437 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:31,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900824764] [2021-06-01 17:33:31,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900824764] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:31,437 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:31,437 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:31,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005912447] [2021-06-01 17:33:31,437 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:31,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:31,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:31,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:31,438 INFO L87 Difference]: Start difference. First operand 1857 states and 7527 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:31,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:31,522 INFO L93 Difference]: Finished difference Result 3953 states and 15009 transitions. [2021-06-01 17:33:31,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:31,523 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:31,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:31,530 INFO L225 Difference]: With dead ends: 3953 [2021-06-01 17:33:31,530 INFO L226 Difference]: Without dead ends: 3690 [2021-06-01 17:33:31,530 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 117.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:31,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3690 states. [2021-06-01 17:33:31,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3690 to 1841. [2021-06-01 17:33:31,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 4.060326086956522) internal successors, (7471), 1840 states have internal predecessors, (7471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:31,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 7471 transitions. [2021-06-01 17:33:31,577 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 7471 transitions. Word has length 25 [2021-06-01 17:33:31,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:31,578 INFO L482 AbstractCegarLoop]: Abstraction has 1841 states and 7471 transitions. [2021-06-01 17:33:31,578 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:31,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 7471 transitions. [2021-06-01 17:33:31,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:31,580 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:31,580 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:31,580 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2021-06-01 17:33:31,580 INFO L430 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:31,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:31,581 INFO L82 PathProgramCache]: Analyzing trace with hash -10582849, now seen corresponding path program 251 times [2021-06-01 17:33:31,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:31,581 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257036787] [2021-06-01 17:33:31,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:31,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:31,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:31,671 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:31,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257036787] [2021-06-01 17:33:31,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257036787] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:31,671 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:31,671 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:31,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892922868] [2021-06-01 17:33:31,671 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:31,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:31,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:31,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:31,672 INFO L87 Difference]: Start difference. First operand 1841 states and 7471 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:31,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:31,747 INFO L93 Difference]: Finished difference Result 4052 states and 15400 transitions. [2021-06-01 17:33:31,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:31,747 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:31,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:31,755 INFO L225 Difference]: With dead ends: 4052 [2021-06-01 17:33:31,755 INFO L226 Difference]: Without dead ends: 3805 [2021-06-01 17:33:31,755 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:31,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3805 states. [2021-06-01 17:33:31,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3805 to 1885. [2021-06-01 17:33:31,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1885 states, 1884 states have (on average 4.046178343949045) internal successors, (7623), 1884 states have internal predecessors, (7623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:31,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 7623 transitions. [2021-06-01 17:33:31,803 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 7623 transitions. Word has length 25 [2021-06-01 17:33:31,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:31,803 INFO L482 AbstractCegarLoop]: Abstraction has 1885 states and 7623 transitions. [2021-06-01 17:33:31,803 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:31,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 7623 transitions. [2021-06-01 17:33:31,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:31,807 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:31,807 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:31,807 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2021-06-01 17:33:31,807 INFO L430 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:31,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:31,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1014914787, now seen corresponding path program 252 times [2021-06-01 17:33:31,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:31,807 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052571834] [2021-06-01 17:33:31,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:31,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:31,914 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:31,914 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052571834] [2021-06-01 17:33:31,914 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052571834] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:31,914 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:31,914 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:31,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545654670] [2021-06-01 17:33:31,914 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:31,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:31,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:31,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:31,915 INFO L87 Difference]: Start difference. First operand 1885 states and 7623 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:31,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:31,981 INFO L93 Difference]: Finished difference Result 4123 states and 15639 transitions. [2021-06-01 17:33:31,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:31,982 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:31,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:31,990 INFO L225 Difference]: With dead ends: 4123 [2021-06-01 17:33:31,990 INFO L226 Difference]: Without dead ends: 3745 [2021-06-01 17:33:31,991 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:32,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3745 states. [2021-06-01 17:33:32,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3745 to 1825. [2021-06-01 17:33:32,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1825 states, 1824 states have (on average 4.0652412280701755) internal successors, (7415), 1824 states have internal predecessors, (7415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:32,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1825 states to 1825 states and 7415 transitions. [2021-06-01 17:33:32,041 INFO L78 Accepts]: Start accepts. Automaton has 1825 states and 7415 transitions. Word has length 25 [2021-06-01 17:33:32,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:32,041 INFO L482 AbstractCegarLoop]: Abstraction has 1825 states and 7415 transitions. [2021-06-01 17:33:32,041 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:32,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1825 states and 7415 transitions. [2021-06-01 17:33:32,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:32,043 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:32,044 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:32,044 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2021-06-01 17:33:32,044 INFO L430 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:32,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:32,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1721451033, now seen corresponding path program 253 times [2021-06-01 17:33:32,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:32,044 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977490400] [2021-06-01 17:33:32,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:32,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:32,143 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:32,143 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977490400] [2021-06-01 17:33:32,143 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977490400] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:32,143 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:32,143 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:32,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304155183] [2021-06-01 17:33:32,144 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:32,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:32,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:32,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:32,144 INFO L87 Difference]: Start difference. First operand 1825 states and 7415 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:32,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:32,213 INFO L93 Difference]: Finished difference Result 3930 states and 14960 transitions. [2021-06-01 17:33:32,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:32,214 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:32,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:32,221 INFO L225 Difference]: With dead ends: 3930 [2021-06-01 17:33:32,221 INFO L226 Difference]: Without dead ends: 3683 [2021-06-01 17:33:32,221 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:32,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3683 states. [2021-06-01 17:33:32,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3683 to 1861. [2021-06-01 17:33:32,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1861 states, 1860 states have (on average 4.053225806451613) internal successors, (7539), 1860 states have internal predecessors, (7539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:32,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1861 states to 1861 states and 7539 transitions. [2021-06-01 17:33:32,269 INFO L78 Accepts]: Start accepts. Automaton has 1861 states and 7539 transitions. Word has length 25 [2021-06-01 17:33:32,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:32,269 INFO L482 AbstractCegarLoop]: Abstraction has 1861 states and 7539 transitions. [2021-06-01 17:33:32,269 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:32,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1861 states and 7539 transitions. [2021-06-01 17:33:32,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:32,272 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:32,272 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:32,272 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2021-06-01 17:33:32,272 INFO L430 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:32,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:32,272 INFO L82 PathProgramCache]: Analyzing trace with hash 131516283, now seen corresponding path program 254 times [2021-06-01 17:33:32,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:32,272 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98288803] [2021-06-01 17:33:32,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:32,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:32,358 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:32,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98288803] [2021-06-01 17:33:32,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98288803] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:32,358 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:32,358 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:32,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406999236] [2021-06-01 17:33:32,358 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:32,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:32,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:32,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:32,358 INFO L87 Difference]: Start difference. First operand 1861 states and 7539 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:32,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:32,431 INFO L93 Difference]: Finished difference Result 3968 states and 15085 transitions. [2021-06-01 17:33:32,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:32,431 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:32,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:32,438 INFO L225 Difference]: With dead ends: 3968 [2021-06-01 17:33:32,438 INFO L226 Difference]: Without dead ends: 3655 [2021-06-01 17:33:32,439 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:32,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3655 states. [2021-06-01 17:33:32,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3655 to 1833. [2021-06-01 17:33:32,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1833 states, 1832 states have (on average 4.062772925764192) internal successors, (7443), 1832 states have internal predecessors, (7443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:32,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 7443 transitions. [2021-06-01 17:33:32,484 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 7443 transitions. Word has length 25 [2021-06-01 17:33:32,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:32,484 INFO L482 AbstractCegarLoop]: Abstraction has 1833 states and 7443 transitions. [2021-06-01 17:33:32,484 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:32,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 7443 transitions. [2021-06-01 17:33:32,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:32,487 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:32,487 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:32,487 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2021-06-01 17:33:32,487 INFO L430 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:32,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:32,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1514643067, now seen corresponding path program 255 times [2021-06-01 17:33:32,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:32,487 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875279558] [2021-06-01 17:33:32,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:32,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:32,563 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:32,564 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875279558] [2021-06-01 17:33:32,564 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875279558] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:32,564 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:32,564 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:32,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121984245] [2021-06-01 17:33:32,564 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:32,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:32,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:32,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:32,564 INFO L87 Difference]: Start difference. First operand 1833 states and 7443 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:32,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:32,639 INFO L93 Difference]: Finished difference Result 3880 states and 14747 transitions. [2021-06-01 17:33:32,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:32,639 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:32,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:32,646 INFO L225 Difference]: With dead ends: 3880 [2021-06-01 17:33:32,646 INFO L226 Difference]: Without dead ends: 3633 [2021-06-01 17:33:32,646 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:32,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3633 states. [2021-06-01 17:33:32,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3633 to 1849. [2021-06-01 17:33:32,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1849 states, 1848 states have (on average 4.053571428571429) internal successors, (7491), 1848 states have internal predecessors, (7491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:32,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1849 states to 1849 states and 7491 transitions. [2021-06-01 17:33:32,692 INFO L78 Accepts]: Start accepts. Automaton has 1849 states and 7491 transitions. Word has length 25 [2021-06-01 17:33:32,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:32,692 INFO L482 AbstractCegarLoop]: Abstraction has 1849 states and 7491 transitions. [2021-06-01 17:33:32,692 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:32,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1849 states and 7491 transitions. [2021-06-01 17:33:32,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:32,695 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:32,695 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:32,695 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2021-06-01 17:33:32,695 INFO L430 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:32,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:32,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1099827589, now seen corresponding path program 256 times [2021-06-01 17:33:32,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:32,695 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488988960] [2021-06-01 17:33:32,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:32,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:32,769 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:32,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488988960] [2021-06-01 17:33:32,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488988960] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:32,769 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:32,769 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:32,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448893395] [2021-06-01 17:33:32,770 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:32,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:32,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:32,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:32,770 INFO L87 Difference]: Start difference. First operand 1849 states and 7491 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:32,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:32,843 INFO L93 Difference]: Finished difference Result 3880 states and 14731 transitions. [2021-06-01 17:33:32,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:32,843 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:32,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:32,850 INFO L225 Difference]: With dead ends: 3880 [2021-06-01 17:33:32,851 INFO L226 Difference]: Without dead ends: 3617 [2021-06-01 17:33:32,851 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:32,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3617 states. [2021-06-01 17:33:32,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3617 to 1833. [2021-06-01 17:33:32,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1833 states, 1832 states have (on average 4.058406113537118) internal successors, (7435), 1832 states have internal predecessors, (7435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:32,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 7435 transitions. [2021-06-01 17:33:32,896 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 7435 transitions. Word has length 25 [2021-06-01 17:33:32,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:32,896 INFO L482 AbstractCegarLoop]: Abstraction has 1833 states and 7435 transitions. [2021-06-01 17:33:32,896 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:32,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 7435 transitions. [2021-06-01 17:33:32,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:32,899 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:32,899 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:32,899 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2021-06-01 17:33:32,899 INFO L430 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:32,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:32,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1363162275, now seen corresponding path program 257 times [2021-06-01 17:33:32,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:32,899 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778108446] [2021-06-01 17:33:32,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:32,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:32,992 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:32,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778108446] [2021-06-01 17:33:32,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778108446] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:32,992 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:32,992 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:32,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363813531] [2021-06-01 17:33:32,992 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:32,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:32,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:32,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:32,993 INFO L87 Difference]: Start difference. First operand 1833 states and 7435 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:33,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:33,071 INFO L93 Difference]: Finished difference Result 3968 states and 15097 transitions. [2021-06-01 17:33:33,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:33,071 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:33,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:33,079 INFO L225 Difference]: With dead ends: 3968 [2021-06-01 17:33:33,079 INFO L226 Difference]: Without dead ends: 3683 [2021-06-01 17:33:33,079 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:33,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3683 states. [2021-06-01 17:33:33,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3683 to 1861. [2021-06-01 17:33:33,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1861 states, 1860 states have (on average 4.044623655913979) internal successors, (7523), 1860 states have internal predecessors, (7523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:33,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1861 states to 1861 states and 7523 transitions. [2021-06-01 17:33:33,125 INFO L78 Accepts]: Start accepts. Automaton has 1861 states and 7523 transitions. Word has length 25 [2021-06-01 17:33:33,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:33,125 INFO L482 AbstractCegarLoop]: Abstraction has 1861 states and 7523 transitions. [2021-06-01 17:33:33,125 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:33,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1861 states and 7523 transitions. [2021-06-01 17:33:33,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:33,128 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:33,128 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:33,128 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2021-06-01 17:33:33,128 INFO L430 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:33,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:33,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1539660475, now seen corresponding path program 258 times [2021-06-01 17:33:33,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:33,128 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127362523] [2021-06-01 17:33:33,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:33,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:33,215 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:33,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127362523] [2021-06-01 17:33:33,215 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127362523] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:33,215 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:33,216 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:33,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522606207] [2021-06-01 17:33:33,216 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:33,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:33,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:33,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:33,216 INFO L87 Difference]: Start difference. First operand 1861 states and 7523 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:33,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:33,302 INFO L93 Difference]: Finished difference Result 3930 states and 14916 transitions. [2021-06-01 17:33:33,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:33,302 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:33,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:33,310 INFO L225 Difference]: With dead ends: 3930 [2021-06-01 17:33:33,310 INFO L226 Difference]: Without dead ends: 3647 [2021-06-01 17:33:33,310 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:33,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3647 states. [2021-06-01 17:33:33,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3647 to 1825. [2021-06-01 17:33:33,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1825 states, 1824 states have (on average 4.063048245614035) internal successors, (7411), 1824 states have internal predecessors, (7411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:33,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1825 states to 1825 states and 7411 transitions. [2021-06-01 17:33:33,359 INFO L78 Accepts]: Start accepts. Automaton has 1825 states and 7411 transitions. Word has length 25 [2021-06-01 17:33:33,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:33,359 INFO L482 AbstractCegarLoop]: Abstraction has 1825 states and 7411 transitions. [2021-06-01 17:33:33,359 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:33,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1825 states and 7411 transitions. [2021-06-01 17:33:33,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:33,362 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:33,362 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:33,362 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2021-06-01 17:33:33,362 INFO L430 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:33,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:33,362 INFO L82 PathProgramCache]: Analyzing trace with hash -457948993, now seen corresponding path program 259 times [2021-06-01 17:33:33,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:33,362 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966939391] [2021-06-01 17:33:33,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:33,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:33,453 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:33,453 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966939391] [2021-06-01 17:33:33,453 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966939391] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:33,453 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:33,453 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:33,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868223578] [2021-06-01 17:33:33,453 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:33,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:33,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:33,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:33,454 INFO L87 Difference]: Start difference. First operand 1825 states and 7411 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:33,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:33,522 INFO L93 Difference]: Finished difference Result 4140 states and 15783 transitions. [2021-06-01 17:33:33,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:33,522 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:33,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:33,530 INFO L225 Difference]: With dead ends: 4140 [2021-06-01 17:33:33,530 INFO L226 Difference]: Without dead ends: 3855 [2021-06-01 17:33:33,530 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:33,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3855 states. [2021-06-01 17:33:33,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3855 to 1883. [2021-06-01 17:33:33,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1883 states, 1882 states have (on average 4.053134962805526) internal successors, (7628), 1882 states have internal predecessors, (7628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:33,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 7628 transitions. [2021-06-01 17:33:33,581 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 7628 transitions. Word has length 25 [2021-06-01 17:33:33,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:33,581 INFO L482 AbstractCegarLoop]: Abstraction has 1883 states and 7628 transitions. [2021-06-01 17:33:33,581 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:33,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 7628 transitions. [2021-06-01 17:33:33,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:33,583 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:33,583 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:33,583 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2021-06-01 17:33:33,584 INFO L430 AbstractCegarLoop]: === Iteration 264 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:33,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:33,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1850093539, now seen corresponding path program 260 times [2021-06-01 17:33:33,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:33,584 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755843321] [2021-06-01 17:33:33,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:33,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:33,659 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:33,659 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755843321] [2021-06-01 17:33:33,659 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755843321] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:33,659 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:33,659 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:33,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425758717] [2021-06-01 17:33:33,659 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:33,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:33,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:33,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:33,659 INFO L87 Difference]: Start difference. First operand 1883 states and 7628 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:33,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:33,723 INFO L93 Difference]: Finished difference Result 4102 states and 15602 transitions. [2021-06-01 17:33:33,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:33,724 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:33,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:33,732 INFO L225 Difference]: With dead ends: 4102 [2021-06-01 17:33:33,732 INFO L226 Difference]: Without dead ends: 3827 [2021-06-01 17:33:33,732 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:33,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3827 states. [2021-06-01 17:33:33,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3827 to 1855. [2021-06-01 17:33:33,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1855 states, 1854 states have (on average 4.05933117583603) internal successors, (7526), 1854 states have internal predecessors, (7526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:33,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1855 states to 1855 states and 7526 transitions. [2021-06-01 17:33:33,781 INFO L78 Accepts]: Start accepts. Automaton has 1855 states and 7526 transitions. Word has length 25 [2021-06-01 17:33:33,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:33,781 INFO L482 AbstractCegarLoop]: Abstraction has 1855 states and 7526 transitions. [2021-06-01 17:33:33,781 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:33,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1855 states and 7526 transitions. [2021-06-01 17:33:33,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:33,783 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:33,784 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:33,784 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2021-06-01 17:33:33,784 INFO L430 AbstractCegarLoop]: === Iteration 265 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:33,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:33,784 INFO L82 PathProgramCache]: Analyzing trace with hash 746700189, now seen corresponding path program 261 times [2021-06-01 17:33:33,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:33,784 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772685359] [2021-06-01 17:33:33,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:33,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:33,882 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:33,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772685359] [2021-06-01 17:33:33,883 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772685359] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:33,883 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:33,883 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:33,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908242091] [2021-06-01 17:33:33,883 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:33,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:33,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:33,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:33,883 INFO L87 Difference]: Start difference. First operand 1855 states and 7526 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:33,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:33,966 INFO L93 Difference]: Finished difference Result 4262 states and 16234 transitions. [2021-06-01 17:33:33,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:33,966 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:33,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:33,974 INFO L225 Difference]: With dead ends: 4262 [2021-06-01 17:33:33,974 INFO L226 Difference]: Without dead ends: 3977 [2021-06-01 17:33:33,974 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:33,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3977 states. [2021-06-01 17:33:34,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3977 to 1934. [2021-06-01 17:33:34,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1934 states, 1933 states have (on average 4.031557165028453) internal successors, (7793), 1933 states have internal predecessors, (7793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:34,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 7793 transitions. [2021-06-01 17:33:34,024 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 7793 transitions. Word has length 25 [2021-06-01 17:33:34,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:34,024 INFO L482 AbstractCegarLoop]: Abstraction has 1934 states and 7793 transitions. [2021-06-01 17:33:34,024 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:34,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 7793 transitions. [2021-06-01 17:33:34,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:34,027 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:34,027 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:34,027 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2021-06-01 17:33:34,027 INFO L430 AbstractCegarLoop]: === Iteration 266 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:34,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:34,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1478782493, now seen corresponding path program 262 times [2021-06-01 17:33:34,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:34,027 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982171337] [2021-06-01 17:33:34,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:34,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:34,121 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:34,121 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982171337] [2021-06-01 17:33:34,121 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982171337] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:34,121 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:34,121 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:34,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229573443] [2021-06-01 17:33:34,121 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:34,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:34,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:34,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:34,122 INFO L87 Difference]: Start difference. First operand 1934 states and 7793 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:34,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:34,186 INFO L93 Difference]: Finished difference Result 4295 states and 16301 transitions. [2021-06-01 17:33:34,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:34,186 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:34,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:34,196 INFO L225 Difference]: With dead ends: 4295 [2021-06-01 17:33:34,197 INFO L226 Difference]: Without dead ends: 3898 [2021-06-01 17:33:34,197 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:34,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3898 states. [2021-06-01 17:33:34,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3898 to 1855. [2021-06-01 17:33:34,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1855 states, 1854 states have (on average 4.0431499460625675) internal successors, (7496), 1854 states have internal predecessors, (7496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:34,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1855 states to 1855 states and 7496 transitions. [2021-06-01 17:33:34,264 INFO L78 Accepts]: Start accepts. Automaton has 1855 states and 7496 transitions. Word has length 25 [2021-06-01 17:33:34,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:34,264 INFO L482 AbstractCegarLoop]: Abstraction has 1855 states and 7496 transitions. [2021-06-01 17:33:34,264 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:34,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1855 states and 7496 transitions. [2021-06-01 17:33:34,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:34,268 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:34,268 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:34,268 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2021-06-01 17:33:34,268 INFO L430 AbstractCegarLoop]: === Iteration 267 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:34,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:34,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1110957563, now seen corresponding path program 263 times [2021-06-01 17:33:34,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:34,268 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442707346] [2021-06-01 17:33:34,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:34,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:34,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:34,356 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:34,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442707346] [2021-06-01 17:33:34,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442707346] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:34,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:34,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:34,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429885147] [2021-06-01 17:33:34,356 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:34,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:34,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:34,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:34,357 INFO L87 Difference]: Start difference. First operand 1855 states and 7496 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:34,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:34,420 INFO L93 Difference]: Finished difference Result 4151 states and 15764 transitions. [2021-06-01 17:33:34,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:34,420 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:34,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:34,428 INFO L225 Difference]: With dead ends: 4151 [2021-06-01 17:33:34,428 INFO L226 Difference]: Without dead ends: 3904 [2021-06-01 17:33:34,428 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:34,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3904 states. [2021-06-01 17:33:34,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3904 to 1899. [2021-06-01 17:33:34,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1899 states, 1898 states have (on average 4.029504741833509) internal successors, (7648), 1898 states have internal predecessors, (7648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:34,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1899 states to 1899 states and 7648 transitions. [2021-06-01 17:33:34,477 INFO L78 Accepts]: Start accepts. Automaton has 1899 states and 7648 transitions. Word has length 25 [2021-06-01 17:33:34,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:34,477 INFO L482 AbstractCegarLoop]: Abstraction has 1899 states and 7648 transitions. [2021-06-01 17:33:34,477 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:34,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1899 states and 7648 transitions. [2021-06-01 17:33:34,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:34,480 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:34,480 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:34,480 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2021-06-01 17:33:34,480 INFO L430 AbstractCegarLoop]: === Iteration 268 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:34,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:34,480 INFO L82 PathProgramCache]: Analyzing trace with hash 41438557, now seen corresponding path program 264 times [2021-06-01 17:33:34,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:34,480 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826413893] [2021-06-01 17:33:34,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:34,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:34,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:34,566 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:34,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826413893] [2021-06-01 17:33:34,567 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826413893] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:34,567 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:34,567 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:34,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621062384] [2021-06-01 17:33:34,567 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:34,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:34,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:34,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:34,567 INFO L87 Difference]: Start difference. First operand 1899 states and 7648 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:34,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:34,621 INFO L93 Difference]: Finished difference Result 4222 states and 16003 transitions. [2021-06-01 17:33:34,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:34,621 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:34,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:34,629 INFO L225 Difference]: With dead ends: 4222 [2021-06-01 17:33:34,629 INFO L226 Difference]: Without dead ends: 3818 [2021-06-01 17:33:34,629 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 90.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:34,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3818 states. [2021-06-01 17:33:34,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3818 to 1813. [2021-06-01 17:33:34,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 1812 states have (on average 4.068984547461369) internal successors, (7373), 1812 states have internal predecessors, (7373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:34,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 7373 transitions. [2021-06-01 17:33:34,676 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 7373 transitions. Word has length 25 [2021-06-01 17:33:34,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:34,676 INFO L482 AbstractCegarLoop]: Abstraction has 1813 states and 7373 transitions. [2021-06-01 17:33:34,676 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:34,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 7373 transitions. [2021-06-01 17:33:34,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:34,679 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:34,679 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:34,679 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2021-06-01 17:33:34,679 INFO L430 AbstractCegarLoop]: === Iteration 269 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:34,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:34,679 INFO L82 PathProgramCache]: Analyzing trace with hash -454950149, now seen corresponding path program 265 times [2021-06-01 17:33:34,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:34,679 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519118858] [2021-06-01 17:33:34,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:34,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:34,785 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:34,785 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519118858] [2021-06-01 17:33:34,785 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519118858] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:34,786 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:34,786 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:34,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340980539] [2021-06-01 17:33:34,786 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:34,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:34,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:34,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:34,786 INFO L87 Difference]: Start difference. First operand 1813 states and 7373 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:34,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:34,839 INFO L93 Difference]: Finished difference Result 4161 states and 15891 transitions. [2021-06-01 17:33:34,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:34,839 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:34,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:34,847 INFO L225 Difference]: With dead ends: 4161 [2021-06-01 17:33:34,847 INFO L226 Difference]: Without dead ends: 3914 [2021-06-01 17:33:34,847 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:34,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3914 states. [2021-06-01 17:33:34,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3914 to 1857. [2021-06-01 17:33:34,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1857 states, 1856 states have (on average 4.054418103448276) internal successors, (7525), 1856 states have internal predecessors, (7525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:34,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1857 states to 1857 states and 7525 transitions. [2021-06-01 17:33:34,895 INFO L78 Accepts]: Start accepts. Automaton has 1857 states and 7525 transitions. Word has length 25 [2021-06-01 17:33:34,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:34,895 INFO L482 AbstractCegarLoop]: Abstraction has 1857 states and 7525 transitions. [2021-06-01 17:33:34,896 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:34,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1857 states and 7525 transitions. [2021-06-01 17:33:34,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:34,898 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:34,898 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:34,898 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2021-06-01 17:33:34,898 INFO L430 AbstractCegarLoop]: === Iteration 270 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:34,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:34,898 INFO L82 PathProgramCache]: Analyzing trace with hash -2086897315, now seen corresponding path program 266 times [2021-06-01 17:33:34,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:34,898 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854569371] [2021-06-01 17:33:34,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:34,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:34,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:34,997 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:34,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854569371] [2021-06-01 17:33:34,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854569371] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:34,997 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:34,997 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:34,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111391840] [2021-06-01 17:33:34,997 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:34,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:34,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:34,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:34,998 INFO L87 Difference]: Start difference. First operand 1857 states and 7525 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:35,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:35,051 INFO L93 Difference]: Finished difference Result 4232 states and 16130 transitions. [2021-06-01 17:33:35,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:35,051 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:35,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:35,059 INFO L225 Difference]: With dead ends: 4232 [2021-06-01 17:33:35,059 INFO L226 Difference]: Without dead ends: 3870 [2021-06-01 17:33:35,059 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:35,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3870 states. [2021-06-01 17:33:35,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3870 to 1813. [2021-06-01 17:33:35,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 1812 states have (on average 4.056843267108167) internal successors, (7351), 1812 states have internal predecessors, (7351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:35,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 7351 transitions. [2021-06-01 17:33:35,106 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 7351 transitions. Word has length 25 [2021-06-01 17:33:35,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:35,106 INFO L482 AbstractCegarLoop]: Abstraction has 1813 states and 7351 transitions. [2021-06-01 17:33:35,106 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:35,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 7351 transitions. [2021-06-01 17:33:35,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:35,109 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:35,109 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:35,109 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2021-06-01 17:33:35,109 INFO L430 AbstractCegarLoop]: === Iteration 271 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:35,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:35,109 INFO L82 PathProgramCache]: Analyzing trace with hash 790178329, now seen corresponding path program 267 times [2021-06-01 17:33:35,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:35,109 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478914638] [2021-06-01 17:33:35,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:35,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:35,203 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:35,203 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478914638] [2021-06-01 17:33:35,203 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478914638] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:35,203 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:35,203 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:35,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601400763] [2021-06-01 17:33:35,204 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:35,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:35,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:35,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:35,204 INFO L87 Difference]: Start difference. First operand 1813 states and 7351 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:35,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:35,256 INFO L93 Difference]: Finished difference Result 4112 states and 15691 transitions. [2021-06-01 17:33:35,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:35,256 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:35,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:35,264 INFO L225 Difference]: With dead ends: 4112 [2021-06-01 17:33:35,264 INFO L226 Difference]: Without dead ends: 3865 [2021-06-01 17:33:35,264 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:35,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3865 states. [2021-06-01 17:33:35,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3865 to 1841. [2021-06-01 17:33:35,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 4.042934782608696) internal successors, (7439), 1840 states have internal predecessors, (7439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:35,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 7439 transitions. [2021-06-01 17:33:35,311 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 7439 transitions. Word has length 25 [2021-06-01 17:33:35,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:35,312 INFO L482 AbstractCegarLoop]: Abstraction has 1841 states and 7439 transitions. [2021-06-01 17:33:35,312 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:35,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 7439 transitions. [2021-06-01 17:33:35,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:35,314 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:35,314 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:35,314 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2021-06-01 17:33:35,314 INFO L430 AbstractCegarLoop]: === Iteration 272 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:35,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:35,314 INFO L82 PathProgramCache]: Analyzing trace with hash -799756421, now seen corresponding path program 268 times [2021-06-01 17:33:35,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:35,315 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090506902] [2021-06-01 17:33:35,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:35,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:35,425 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:35,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090506902] [2021-06-01 17:33:35,425 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090506902] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:35,425 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:35,425 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:35,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612697383] [2021-06-01 17:33:35,425 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:35,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:35,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:35,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:35,426 INFO L87 Difference]: Start difference. First operand 1841 states and 7439 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:35,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:35,501 INFO L93 Difference]: Finished difference Result 4150 states and 15816 transitions. [2021-06-01 17:33:35,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:35,501 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:35,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:35,509 INFO L225 Difference]: With dead ends: 4150 [2021-06-01 17:33:35,509 INFO L226 Difference]: Without dead ends: 3837 [2021-06-01 17:33:35,509 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 126.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:35,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3837 states. [2021-06-01 17:33:35,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3837 to 1813. [2021-06-01 17:33:35,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 1812 states have (on average 4.049116997792495) internal successors, (7337), 1812 states have internal predecessors, (7337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:35,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 7337 transitions. [2021-06-01 17:33:35,556 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 7337 transitions. Word has length 25 [2021-06-01 17:33:35,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:35,557 INFO L482 AbstractCegarLoop]: Abstraction has 1813 states and 7337 transitions. [2021-06-01 17:33:35,557 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:35,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 7337 transitions. [2021-06-01 17:33:35,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:35,559 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:35,559 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:35,559 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2021-06-01 17:33:35,559 INFO L430 AbstractCegarLoop]: === Iteration 273 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:35,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:35,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1437919907, now seen corresponding path program 269 times [2021-06-01 17:33:35,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:35,560 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034476861] [2021-06-01 17:33:35,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:35,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:35,647 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:35,647 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034476861] [2021-06-01 17:33:35,647 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034476861] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:35,647 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:35,647 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:35,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044410721] [2021-06-01 17:33:35,647 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:35,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:35,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:35,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:35,648 INFO L87 Difference]: Start difference. First operand 1813 states and 7337 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:35,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:35,714 INFO L93 Difference]: Finished difference Result 4272 states and 16295 transitions. [2021-06-01 17:33:35,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:35,714 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:35,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:35,722 INFO L225 Difference]: With dead ends: 4272 [2021-06-01 17:33:35,723 INFO L226 Difference]: Without dead ends: 3987 [2021-06-01 17:33:35,723 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:35,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3987 states. [2021-06-01 17:33:35,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3987 to 1892. [2021-06-01 17:33:35,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1892 states, 1891 states have (on average 4.021152829190904) internal successors, (7604), 1891 states have internal predecessors, (7604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:35,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 7604 transitions. [2021-06-01 17:33:35,772 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 7604 transitions. Word has length 25 [2021-06-01 17:33:35,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:35,772 INFO L482 AbstractCegarLoop]: Abstraction has 1892 states and 7604 transitions. [2021-06-01 17:33:35,772 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:35,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 7604 transitions. [2021-06-01 17:33:35,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:35,774 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:35,774 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:35,774 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2021-06-01 17:33:35,774 INFO L430 AbstractCegarLoop]: === Iteration 274 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:35,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:35,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1139866949, now seen corresponding path program 270 times [2021-06-01 17:33:35,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:35,775 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619082029] [2021-06-01 17:33:35,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:35,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:35,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:35,881 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:35,881 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619082029] [2021-06-01 17:33:35,881 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619082029] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:35,881 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:35,881 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:35,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697257980] [2021-06-01 17:33:35,881 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:35,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:35,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:35,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:35,881 INFO L87 Difference]: Start difference. First operand 1892 states and 7604 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:35,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:35,975 INFO L93 Difference]: Finished difference Result 4305 states and 16362 transitions. [2021-06-01 17:33:35,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:35,975 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:35,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:35,984 INFO L225 Difference]: With dead ends: 4305 [2021-06-01 17:33:35,984 INFO L226 Difference]: Without dead ends: 3878 [2021-06-01 17:33:35,984 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:36,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3878 states. [2021-06-01 17:33:36,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3878 to 1783. [2021-06-01 17:33:36,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1783 states, 1782 states have (on average 4.057239057239057) internal successors, (7230), 1782 states have internal predecessors, (7230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:36,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 7230 transitions. [2021-06-01 17:33:36,031 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 7230 transitions. Word has length 25 [2021-06-01 17:33:36,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:36,031 INFO L482 AbstractCegarLoop]: Abstraction has 1783 states and 7230 transitions. [2021-06-01 17:33:36,031 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:36,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 7230 transitions. [2021-06-01 17:33:36,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:36,034 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:36,034 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:36,034 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2021-06-01 17:33:36,034 INFO L430 AbstractCegarLoop]: === Iteration 275 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:36,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:36,034 INFO L82 PathProgramCache]: Analyzing trace with hash -395277509, now seen corresponding path program 271 times [2021-06-01 17:33:36,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:36,034 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048139266] [2021-06-01 17:33:36,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:36,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:36,130 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:36,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048139266] [2021-06-01 17:33:36,130 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048139266] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:36,130 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:36,130 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:36,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866550886] [2021-06-01 17:33:36,130 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:36,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:36,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:36,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:36,130 INFO L87 Difference]: Start difference. First operand 1783 states and 7230 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:36,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:36,186 INFO L93 Difference]: Finished difference Result 4054 states and 15469 transitions. [2021-06-01 17:33:36,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:36,186 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:36,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:36,194 INFO L225 Difference]: With dead ends: 4054 [2021-06-01 17:33:36,194 INFO L226 Difference]: Without dead ends: 3807 [2021-06-01 17:33:36,194 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:36,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3807 states. [2021-06-01 17:33:36,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3807 to 1847. [2021-06-01 17:33:36,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1847 states, 1846 states have (on average 4.04875406283857) internal successors, (7474), 1846 states have internal predecessors, (7474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:36,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1847 states to 1847 states and 7474 transitions. [2021-06-01 17:33:36,242 INFO L78 Accepts]: Start accepts. Automaton has 1847 states and 7474 transitions. Word has length 25 [2021-06-01 17:33:36,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:36,242 INFO L482 AbstractCegarLoop]: Abstraction has 1847 states and 7474 transitions. [2021-06-01 17:33:36,242 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:36,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1847 states and 7474 transitions. [2021-06-01 17:33:36,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:36,245 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:36,245 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:36,245 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2021-06-01 17:33:36,245 INFO L430 AbstractCegarLoop]: === Iteration 276 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:36,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:36,245 INFO L82 PathProgramCache]: Analyzing trace with hash -2027224675, now seen corresponding path program 272 times [2021-06-01 17:33:36,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:36,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301345696] [2021-06-01 17:33:36,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:36,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:36,374 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:36,374 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301345696] [2021-06-01 17:33:36,374 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301345696] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:36,374 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:36,374 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:36,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898501667] [2021-06-01 17:33:36,374 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:36,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:36,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:36,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:36,375 INFO L87 Difference]: Start difference. First operand 1847 states and 7474 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:36,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:36,430 INFO L93 Difference]: Finished difference Result 4125 states and 15708 transitions. [2021-06-01 17:33:36,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:36,431 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:36,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:36,438 INFO L225 Difference]: With dead ends: 4125 [2021-06-01 17:33:36,438 INFO L226 Difference]: Without dead ends: 3763 [2021-06-01 17:33:36,439 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 124.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:36,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3763 states. [2021-06-01 17:33:36,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3763 to 1803. [2021-06-01 17:33:36,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1803 states, 1802 states have (on average 4.052164261931187) internal successors, (7302), 1802 states have internal predecessors, (7302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:36,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1803 states to 1803 states and 7302 transitions. [2021-06-01 17:33:36,485 INFO L78 Accepts]: Start accepts. Automaton has 1803 states and 7302 transitions. Word has length 25 [2021-06-01 17:33:36,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:36,485 INFO L482 AbstractCegarLoop]: Abstraction has 1803 states and 7302 transitions. [2021-06-01 17:33:36,485 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:36,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1803 states and 7302 transitions. [2021-06-01 17:33:36,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:36,488 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:36,488 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:36,488 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2021-06-01 17:33:36,488 INFO L430 AbstractCegarLoop]: === Iteration 277 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:36,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:36,488 INFO L82 PathProgramCache]: Analyzing trace with hash -639126789, now seen corresponding path program 273 times [2021-06-01 17:33:36,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:36,488 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61948232] [2021-06-01 17:33:36,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:36,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:36,575 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:36,575 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61948232] [2021-06-01 17:33:36,576 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61948232] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:36,576 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:36,576 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:36,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736292840] [2021-06-01 17:33:36,576 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:36,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:36,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:36,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:36,576 INFO L87 Difference]: Start difference. First operand 1803 states and 7302 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:36,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:36,631 INFO L93 Difference]: Finished difference Result 3923 states and 14970 transitions. [2021-06-01 17:33:36,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:36,632 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:36,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:36,639 INFO L225 Difference]: With dead ends: 3923 [2021-06-01 17:33:36,639 INFO L226 Difference]: Without dead ends: 3676 [2021-06-01 17:33:36,639 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:36,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3676 states. [2021-06-01 17:33:36,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3676 to 1827. [2021-06-01 17:33:36,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1827 states, 1826 states have (on average 4.04052573932092) internal successors, (7378), 1826 states have internal predecessors, (7378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:36,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 7378 transitions. [2021-06-01 17:33:36,686 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 7378 transitions. Word has length 25 [2021-06-01 17:33:36,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:36,686 INFO L482 AbstractCegarLoop]: Abstraction has 1827 states and 7378 transitions. [2021-06-01 17:33:36,686 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:36,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 7378 transitions. [2021-06-01 17:33:36,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:36,689 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:36,689 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:36,689 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2021-06-01 17:33:36,689 INFO L430 AbstractCegarLoop]: === Iteration 278 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:36,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:36,689 INFO L82 PathProgramCache]: Analyzing trace with hash 2128924381, now seen corresponding path program 274 times [2021-06-01 17:33:36,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:36,689 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541635808] [2021-06-01 17:33:36,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:36,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:36,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:36,776 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:36,776 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541635808] [2021-06-01 17:33:36,776 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541635808] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:36,776 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:36,776 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:36,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126716117] [2021-06-01 17:33:36,776 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:36,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:36,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:36,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:36,777 INFO L87 Difference]: Start difference. First operand 1827 states and 7378 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:36,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:36,844 INFO L93 Difference]: Finished difference Result 3747 states and 14393 transitions. [2021-06-01 17:33:36,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:36,844 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:36,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:36,851 INFO L225 Difference]: With dead ends: 3747 [2021-06-01 17:33:36,851 INFO L226 Difference]: Without dead ends: 3460 [2021-06-01 17:33:36,851 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:36,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3460 states. [2021-06-01 17:33:36,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3460 to 1803. [2021-06-01 17:33:36,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1803 states, 1802 states have (on average 4.04550499445061) internal successors, (7290), 1802 states have internal predecessors, (7290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:36,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1803 states to 1803 states and 7290 transitions. [2021-06-01 17:33:36,899 INFO L78 Accepts]: Start accepts. Automaton has 1803 states and 7290 transitions. Word has length 25 [2021-06-01 17:33:36,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:36,899 INFO L482 AbstractCegarLoop]: Abstraction has 1803 states and 7290 transitions. [2021-06-01 17:33:36,899 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:36,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1803 states and 7290 transitions. [2021-06-01 17:33:36,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:36,902 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:36,902 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:36,902 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2021-06-01 17:33:36,902 INFO L430 AbstractCegarLoop]: === Iteration 279 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:36,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:36,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1490760895, now seen corresponding path program 275 times [2021-06-01 17:33:36,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:36,903 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646581554] [2021-06-01 17:33:36,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:36,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:36,999 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:36,999 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646581554] [2021-06-01 17:33:36,999 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646581554] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:36,999 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:36,999 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:36,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562147895] [2021-06-01 17:33:36,999 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:36,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:36,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:36,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:36,999 INFO L87 Difference]: Start difference. First operand 1803 states and 7290 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:37,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:37,065 INFO L93 Difference]: Finished difference Result 4094 states and 15621 transitions. [2021-06-01 17:33:37,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:37,065 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:37,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:37,073 INFO L225 Difference]: With dead ends: 4094 [2021-06-01 17:33:37,073 INFO L226 Difference]: Without dead ends: 3831 [2021-06-01 17:33:37,074 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:37,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3831 states. [2021-06-01 17:33:37,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3831 to 1855. [2021-06-01 17:33:37,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1855 states, 1854 states have (on average 4.031283710895361) internal successors, (7474), 1854 states have internal predecessors, (7474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:37,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1855 states to 1855 states and 7474 transitions. [2021-06-01 17:33:37,121 INFO L78 Accepts]: Start accepts. Automaton has 1855 states and 7474 transitions. Word has length 25 [2021-06-01 17:33:37,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:37,121 INFO L482 AbstractCegarLoop]: Abstraction has 1855 states and 7474 transitions. [2021-06-01 17:33:37,121 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:37,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1855 states and 7474 transitions. [2021-06-01 17:33:37,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:37,123 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:37,123 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:37,123 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2021-06-01 17:33:37,123 INFO L430 AbstractCegarLoop]: === Iteration 280 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:37,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:37,124 INFO L82 PathProgramCache]: Analyzing trace with hash -164763491, now seen corresponding path program 276 times [2021-06-01 17:33:37,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:37,124 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255084633] [2021-06-01 17:33:37,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:37,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:37,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:37,219 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:37,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255084633] [2021-06-01 17:33:37,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255084633] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:37,219 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:37,219 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:37,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620026004] [2021-06-01 17:33:37,219 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:37,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:37,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:37,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:37,220 INFO L87 Difference]: Start difference. First operand 1855 states and 7474 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:37,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:37,280 INFO L93 Difference]: Finished difference Result 4022 states and 15309 transitions. [2021-06-01 17:33:37,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:37,280 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:37,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:37,287 INFO L225 Difference]: With dead ends: 4022 [2021-06-01 17:33:37,288 INFO L226 Difference]: Without dead ends: 3632 [2021-06-01 17:33:37,288 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:37,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3632 states. [2021-06-01 17:33:37,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3632 to 1783. [2021-06-01 17:33:37,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1783 states, 1782 states have (on average 4.051627384960718) internal successors, (7220), 1782 states have internal predecessors, (7220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:37,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 7220 transitions. [2021-06-01 17:33:37,333 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 7220 transitions. Word has length 25 [2021-06-01 17:33:37,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:37,333 INFO L482 AbstractCegarLoop]: Abstraction has 1783 states and 7220 transitions. [2021-06-01 17:33:37,333 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:37,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 7220 transitions. [2021-06-01 17:33:37,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:37,336 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:37,336 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:37,337 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2021-06-01 17:33:37,337 INFO L430 AbstractCegarLoop]: === Iteration 281 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:37,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:37,337 INFO L82 PathProgramCache]: Analyzing trace with hash -456500583, now seen corresponding path program 277 times [2021-06-01 17:33:37,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:37,337 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670152969] [2021-06-01 17:33:37,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:37,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:37,440 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:37,440 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670152969] [2021-06-01 17:33:37,440 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670152969] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:37,440 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:37,440 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:37,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970352135] [2021-06-01 17:33:37,440 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:37,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:37,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:37,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:37,441 INFO L87 Difference]: Start difference. First operand 1783 states and 7220 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:37,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:37,496 INFO L93 Difference]: Finished difference Result 3948 states and 15067 transitions. [2021-06-01 17:33:37,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:37,497 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:37,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:37,504 INFO L225 Difference]: With dead ends: 3948 [2021-06-01 17:33:37,504 INFO L226 Difference]: Without dead ends: 3701 [2021-06-01 17:33:37,504 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:37,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3701 states. [2021-06-01 17:33:37,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3701 to 1823. [2021-06-01 17:33:37,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1823 states, 1822 states have (on average 4.041712403951702) internal successors, (7364), 1822 states have internal predecessors, (7364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:37,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1823 states to 1823 states and 7364 transitions. [2021-06-01 17:33:37,550 INFO L78 Accepts]: Start accepts. Automaton has 1823 states and 7364 transitions. Word has length 25 [2021-06-01 17:33:37,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:37,551 INFO L482 AbstractCegarLoop]: Abstraction has 1823 states and 7364 transitions. [2021-06-01 17:33:37,551 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:37,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1823 states and 7364 transitions. [2021-06-01 17:33:37,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:37,553 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:37,553 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:37,553 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2021-06-01 17:33:37,553 INFO L430 AbstractCegarLoop]: === Iteration 282 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:37,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:37,553 INFO L82 PathProgramCache]: Analyzing trace with hash -2046435333, now seen corresponding path program 278 times [2021-06-01 17:33:37,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:37,553 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049713669] [2021-06-01 17:33:37,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:37,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:37,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:37,649 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:37,649 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049713669] [2021-06-01 17:33:37,649 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049713669] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:37,649 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:37,650 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:37,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345042013] [2021-06-01 17:33:37,650 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:37,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:37,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:37,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:37,650 INFO L87 Difference]: Start difference. First operand 1823 states and 7364 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:37,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:37,723 INFO L93 Difference]: Finished difference Result 3986 states and 15192 transitions. [2021-06-01 17:33:37,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:37,723 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:37,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:37,731 INFO L225 Difference]: With dead ends: 3986 [2021-06-01 17:33:37,731 INFO L226 Difference]: Without dead ends: 3673 [2021-06-01 17:33:37,731 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:37,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3673 states. [2021-06-01 17:33:37,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3673 to 1795. [2021-06-01 17:33:37,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1794 states have (on average 4.0490523968784835) internal successors, (7264), 1794 states have internal predecessors, (7264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:37,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 7264 transitions. [2021-06-01 17:33:37,777 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 7264 transitions. Word has length 25 [2021-06-01 17:33:37,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:37,777 INFO L482 AbstractCegarLoop]: Abstraction has 1795 states and 7264 transitions. [2021-06-01 17:33:37,777 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:37,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 7264 transitions. [2021-06-01 17:33:37,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:37,780 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:37,780 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:37,780 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2021-06-01 17:33:37,780 INFO L430 AbstractCegarLoop]: === Iteration 283 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:37,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:37,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1951179141, now seen corresponding path program 279 times [2021-06-01 17:33:37,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:37,780 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800092607] [2021-06-01 17:33:37,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:37,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:37,871 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:37,871 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800092607] [2021-06-01 17:33:37,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800092607] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:37,871 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:37,871 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:37,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310809458] [2021-06-01 17:33:37,871 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:37,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:37,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:37,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:37,871 INFO L87 Difference]: Start difference. First operand 1795 states and 7264 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:37,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:37,924 INFO L93 Difference]: Finished difference Result 3866 states and 14754 transitions. [2021-06-01 17:33:37,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:37,925 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:37,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:37,932 INFO L225 Difference]: With dead ends: 3866 [2021-06-01 17:33:37,932 INFO L226 Difference]: Without dead ends: 3619 [2021-06-01 17:33:37,932 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:37,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3619 states. [2021-06-01 17:33:37,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3619 to 1819. [2021-06-01 17:33:37,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1819 states, 1818 states have (on average 4.037403740374037) internal successors, (7340), 1818 states have internal predecessors, (7340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:37,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1819 states to 1819 states and 7340 transitions. [2021-06-01 17:33:37,977 INFO L78 Accepts]: Start accepts. Automaton has 1819 states and 7340 transitions. Word has length 25 [2021-06-01 17:33:37,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:37,977 INFO L482 AbstractCegarLoop]: Abstraction has 1819 states and 7340 transitions. [2021-06-01 17:33:37,977 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:37,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1819 states and 7340 transitions. [2021-06-01 17:33:37,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:37,980 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:37,980 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:37,980 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2021-06-01 17:33:37,980 INFO L430 AbstractCegarLoop]: === Iteration 284 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:37,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:37,980 INFO L82 PathProgramCache]: Analyzing trace with hash 401516155, now seen corresponding path program 280 times [2021-06-01 17:33:37,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:37,980 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886703897] [2021-06-01 17:33:37,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:38,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:38,071 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:38,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886703897] [2021-06-01 17:33:38,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886703897] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:38,071 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:38,071 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:38,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830365530] [2021-06-01 17:33:38,072 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:38,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:38,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:38,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:38,072 INFO L87 Difference]: Start difference. First operand 1819 states and 7340 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:38,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:38,139 INFO L93 Difference]: Finished difference Result 3690 states and 14177 transitions. [2021-06-01 17:33:38,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:38,140 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:38,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:38,147 INFO L225 Difference]: With dead ends: 3690 [2021-06-01 17:33:38,147 INFO L226 Difference]: Without dead ends: 3403 [2021-06-01 17:33:38,147 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:38,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3403 states. [2021-06-01 17:33:38,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3403 to 1795. [2021-06-01 17:33:38,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1794 states have (on average 4.042363433667782) internal successors, (7252), 1794 states have internal predecessors, (7252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:38,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 7252 transitions. [2021-06-01 17:33:38,192 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 7252 transitions. Word has length 25 [2021-06-01 17:33:38,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:38,192 INFO L482 AbstractCegarLoop]: Abstraction has 1795 states and 7252 transitions. [2021-06-01 17:33:38,192 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:38,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 7252 transitions. [2021-06-01 17:33:38,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:38,194 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:38,194 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:38,195 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2021-06-01 17:33:38,195 INFO L430 AbstractCegarLoop]: === Iteration 285 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:38,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:38,195 INFO L82 PathProgramCache]: Analyzing trace with hash -534017187, now seen corresponding path program 281 times [2021-06-01 17:33:38,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:38,195 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704907112] [2021-06-01 17:33:38,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:38,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:38,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:38,297 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:38,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704907112] [2021-06-01 17:33:38,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704907112] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:38,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:38,297 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:38,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685959858] [2021-06-01 17:33:38,297 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:38,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:38,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:38,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:38,297 INFO L87 Difference]: Start difference. First operand 1795 states and 7252 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:38,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:38,369 INFO L93 Difference]: Finished difference Result 3916 states and 14951 transitions. [2021-06-01 17:33:38,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:38,369 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:38,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:38,381 INFO L225 Difference]: With dead ends: 3916 [2021-06-01 17:33:38,381 INFO L226 Difference]: Without dead ends: 3631 [2021-06-01 17:33:38,381 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 118.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:38,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3631 states. [2021-06-01 17:33:38,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3631 to 1831. [2021-06-01 17:33:38,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1831 states, 1830 states have (on average 4.028415300546448) internal successors, (7372), 1830 states have internal predecessors, (7372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:38,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 7372 transitions. [2021-06-01 17:33:38,428 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 7372 transitions. Word has length 25 [2021-06-01 17:33:38,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:38,428 INFO L482 AbstractCegarLoop]: Abstraction has 1831 states and 7372 transitions. [2021-06-01 17:33:38,429 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:38,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 7372 transitions. [2021-06-01 17:33:38,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:38,431 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:38,431 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:38,431 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2021-06-01 17:33:38,431 INFO L430 AbstractCegarLoop]: === Iteration 286 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:38,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:38,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1274969285, now seen corresponding path program 282 times [2021-06-01 17:33:38,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:38,432 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651231238] [2021-06-01 17:33:38,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:38,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:38,537 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:38,537 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651231238] [2021-06-01 17:33:38,537 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651231238] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:38,537 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:38,537 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:38,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723137204] [2021-06-01 17:33:38,537 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:38,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:38,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:38,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:38,538 INFO L87 Difference]: Start difference. First operand 1831 states and 7372 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:38,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:38,605 INFO L93 Difference]: Finished difference Result 3702 states and 14209 transitions. [2021-06-01 17:33:38,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:38,606 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:38,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:38,613 INFO L225 Difference]: With dead ends: 3702 [2021-06-01 17:33:38,613 INFO L226 Difference]: Without dead ends: 3391 [2021-06-01 17:33:38,613 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:38,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3391 states. [2021-06-01 17:33:38,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3391 to 1783. [2021-06-01 17:33:38,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1783 states, 1782 states have (on average 4.048260381593715) internal successors, (7214), 1782 states have internal predecessors, (7214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:38,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 7214 transitions. [2021-06-01 17:33:38,659 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 7214 transitions. Word has length 25 [2021-06-01 17:33:38,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:38,659 INFO L482 AbstractCegarLoop]: Abstraction has 1783 states and 7214 transitions. [2021-06-01 17:33:38,659 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:38,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 7214 transitions. [2021-06-01 17:33:38,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:38,661 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:38,661 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:38,662 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2021-06-01 17:33:38,662 INFO L430 AbstractCegarLoop]: === Iteration 287 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:38,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:38,662 INFO L82 PathProgramCache]: Analyzing trace with hash 371196095, now seen corresponding path program 283 times [2021-06-01 17:33:38,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:38,662 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316091506] [2021-06-01 17:33:38,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:38,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:38,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:38,780 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:38,780 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316091506] [2021-06-01 17:33:38,780 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316091506] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:38,780 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:38,780 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:38,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172475550] [2021-06-01 17:33:38,781 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:38,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:38,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:38,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:38,781 INFO L87 Difference]: Start difference. First operand 1783 states and 7214 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:38,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:38,847 INFO L93 Difference]: Finished difference Result 4210 states and 16122 transitions. [2021-06-01 17:33:38,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:38,847 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:38,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:38,855 INFO L225 Difference]: With dead ends: 4210 [2021-06-01 17:33:38,855 INFO L226 Difference]: Without dead ends: 3925 [2021-06-01 17:33:38,855 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 134.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:38,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3925 states. [2021-06-01 17:33:38,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3925 to 1853. [2021-06-01 17:33:38,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1853 states, 1852 states have (on average 4.041576673866091) internal successors, (7485), 1852 states have internal predecessors, (7485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:38,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1853 states to 1853 states and 7485 transitions. [2021-06-01 17:33:38,904 INFO L78 Accepts]: Start accepts. Automaton has 1853 states and 7485 transitions. Word has length 25 [2021-06-01 17:33:38,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:38,905 INFO L482 AbstractCegarLoop]: Abstraction has 1853 states and 7485 transitions. [2021-06-01 17:33:38,905 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:38,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1853 states and 7485 transitions. [2021-06-01 17:33:38,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:38,907 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:38,907 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:38,907 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2021-06-01 17:33:38,907 INFO L430 AbstractCegarLoop]: === Iteration 288 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:38,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:38,908 INFO L82 PathProgramCache]: Analyzing trace with hash -369756003, now seen corresponding path program 284 times [2021-06-01 17:33:38,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:38,908 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220209458] [2021-06-01 17:33:38,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:39,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:39,023 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:39,023 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220209458] [2021-06-01 17:33:39,023 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220209458] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:39,023 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:39,023 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:39,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289389008] [2021-06-01 17:33:39,024 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:39,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:39,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:39,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:39,024 INFO L87 Difference]: Start difference. First operand 1853 states and 7485 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:39,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:39,109 INFO L93 Difference]: Finished difference Result 4188 states and 16005 transitions. [2021-06-01 17:33:39,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:39,110 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:39,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:39,120 INFO L225 Difference]: With dead ends: 4188 [2021-06-01 17:33:39,120 INFO L226 Difference]: Without dead ends: 3889 [2021-06-01 17:33:39,120 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 134.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:39,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2021-06-01 17:33:39,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 1817. [2021-06-01 17:33:39,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1817 states, 1816 states have (on average 4.045704845814978) internal successors, (7347), 1816 states have internal predecessors, (7347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:39,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1817 states to 1817 states and 7347 transitions. [2021-06-01 17:33:39,187 INFO L78 Accepts]: Start accepts. Automaton has 1817 states and 7347 transitions. Word has length 25 [2021-06-01 17:33:39,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:39,187 INFO L482 AbstractCegarLoop]: Abstraction has 1817 states and 7347 transitions. [2021-06-01 17:33:39,187 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:39,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1817 states and 7347 transitions. [2021-06-01 17:33:39,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:39,190 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:39,190 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:39,190 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2021-06-01 17:33:39,191 INFO L430 AbstractCegarLoop]: === Iteration 289 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:39,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:39,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1449839331, now seen corresponding path program 285 times [2021-06-01 17:33:39,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:39,191 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129980919] [2021-06-01 17:33:39,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:39,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:39,295 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:39,295 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129980919] [2021-06-01 17:33:39,295 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129980919] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:39,295 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:39,295 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:39,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458333244] [2021-06-01 17:33:39,295 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:39,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:39,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:39,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:39,296 INFO L87 Difference]: Start difference. First operand 1817 states and 7347 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:39,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:39,379 INFO L93 Difference]: Finished difference Result 4229 states and 16143 transitions. [2021-06-01 17:33:39,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:39,379 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:39,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:39,389 INFO L225 Difference]: With dead ends: 4229 [2021-06-01 17:33:39,389 INFO L226 Difference]: Without dead ends: 3944 [2021-06-01 17:33:39,389 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 123.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:39,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3944 states. [2021-06-01 17:33:39,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3944 to 1896. [2021-06-01 17:33:39,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1896 states, 1895 states have (on average 4.017941952506597) internal successors, (7614), 1895 states have internal predecessors, (7614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:39,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 7614 transitions. [2021-06-01 17:33:39,444 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 7614 transitions. Word has length 25 [2021-06-01 17:33:39,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:39,444 INFO L482 AbstractCegarLoop]: Abstraction has 1896 states and 7614 transitions. [2021-06-01 17:33:39,444 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:39,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 7614 transitions. [2021-06-01 17:33:39,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:39,446 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:39,446 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:39,446 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2021-06-01 17:33:39,446 INFO L430 AbstractCegarLoop]: === Iteration 290 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:39,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:39,447 INFO L82 PathProgramCache]: Analyzing trace with hash 570113565, now seen corresponding path program 286 times [2021-06-01 17:33:39,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:39,447 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764455323] [2021-06-01 17:33:39,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:39,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:39,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:39,540 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:39,540 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764455323] [2021-06-01 17:33:39,540 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764455323] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:39,540 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:39,540 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:39,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793616459] [2021-06-01 17:33:39,540 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:39,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:39,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:39,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:39,540 INFO L87 Difference]: Start difference. First operand 1896 states and 7614 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:39,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:39,599 INFO L93 Difference]: Finished difference Result 4262 states and 16210 transitions. [2021-06-01 17:33:39,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:39,600 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:39,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:39,608 INFO L225 Difference]: With dead ends: 4262 [2021-06-01 17:33:39,608 INFO L226 Difference]: Without dead ends: 3865 [2021-06-01 17:33:39,608 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:39,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3865 states. [2021-06-01 17:33:39,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3865 to 1817. [2021-06-01 17:33:39,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1817 states, 1816 states have (on average 4.026982378854625) internal successors, (7313), 1816 states have internal predecessors, (7313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:39,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1817 states to 1817 states and 7313 transitions. [2021-06-01 17:33:39,656 INFO L78 Accepts]: Start accepts. Automaton has 1817 states and 7313 transitions. Word has length 25 [2021-06-01 17:33:39,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:39,656 INFO L482 AbstractCegarLoop]: Abstraction has 1817 states and 7313 transitions. [2021-06-01 17:33:39,656 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:39,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1817 states and 7313 transitions. [2021-06-01 17:33:39,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:39,659 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:39,659 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:39,659 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2021-06-01 17:33:39,659 INFO L430 AbstractCegarLoop]: === Iteration 291 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:39,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:39,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1703672197, now seen corresponding path program 287 times [2021-06-01 17:33:39,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:39,659 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73057536] [2021-06-01 17:33:39,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:39,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:39,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:39,756 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:39,757 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73057536] [2021-06-01 17:33:39,757 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73057536] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:39,757 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:39,757 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:39,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491772573] [2021-06-01 17:33:39,757 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:39,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:39,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:39,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:39,757 INFO L87 Difference]: Start difference. First operand 1817 states and 7313 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:39,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:39,825 INFO L93 Difference]: Finished difference Result 4158 states and 15853 transitions. [2021-06-01 17:33:39,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:39,825 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:39,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:39,833 INFO L225 Difference]: With dead ends: 4158 [2021-06-01 17:33:39,833 INFO L226 Difference]: Without dead ends: 3895 [2021-06-01 17:33:39,833 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:39,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3895 states. [2021-06-01 17:33:39,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3895 to 1869. [2021-06-01 17:33:39,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1869 states, 1868 states have (on average 4.013383297644539) internal successors, (7497), 1868 states have internal predecessors, (7497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:39,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 7497 transitions. [2021-06-01 17:33:39,882 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 7497 transitions. Word has length 25 [2021-06-01 17:33:39,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:39,882 INFO L482 AbstractCegarLoop]: Abstraction has 1869 states and 7497 transitions. [2021-06-01 17:33:39,882 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:39,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 7497 transitions. [2021-06-01 17:33:39,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:39,884 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:39,885 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:39,885 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2021-06-01 17:33:39,885 INFO L430 AbstractCegarLoop]: === Iteration 292 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:39,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:39,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1485320611, now seen corresponding path program 288 times [2021-06-01 17:33:39,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:39,885 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813014048] [2021-06-01 17:33:39,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:39,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:39,982 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:39,982 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813014048] [2021-06-01 17:33:39,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813014048] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:39,983 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:39,983 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:39,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385060969] [2021-06-01 17:33:39,983 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:39,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:39,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:39,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:39,983 INFO L87 Difference]: Start difference. First operand 1869 states and 7497 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:40,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:40,043 INFO L93 Difference]: Finished difference Result 4086 states and 15541 transitions. [2021-06-01 17:33:40,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:40,043 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:40,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:40,051 INFO L225 Difference]: With dead ends: 4086 [2021-06-01 17:33:40,051 INFO L226 Difference]: Without dead ends: 3668 [2021-06-01 17:33:40,051 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:40,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3668 states. [2021-06-01 17:33:40,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3668 to 1769. [2021-06-01 17:33:40,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1769 states, 1768 states have (on average 4.055995475113122) internal successors, (7171), 1768 states have internal predecessors, (7171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:40,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1769 states to 1769 states and 7171 transitions. [2021-06-01 17:33:40,096 INFO L78 Accepts]: Start accepts. Automaton has 1769 states and 7171 transitions. Word has length 25 [2021-06-01 17:33:40,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:40,097 INFO L482 AbstractCegarLoop]: Abstraction has 1769 states and 7171 transitions. [2021-06-01 17:33:40,097 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:40,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1769 states and 7171 transitions. [2021-06-01 17:33:40,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:40,099 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:40,099 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:40,099 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2021-06-01 17:33:40,099 INFO L430 AbstractCegarLoop]: === Iteration 293 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:40,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:40,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1400654759, now seen corresponding path program 289 times [2021-06-01 17:33:40,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:40,099 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241543882] [2021-06-01 17:33:40,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:40,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:40,203 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:40,203 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241543882] [2021-06-01 17:33:40,203 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241543882] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:40,203 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:40,203 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:40,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400733984] [2021-06-01 17:33:40,204 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:40,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:40,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:40,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:40,204 INFO L87 Difference]: Start difference. First operand 1769 states and 7171 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:40,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:40,269 INFO L93 Difference]: Finished difference Result 3897 states and 14808 transitions. [2021-06-01 17:33:40,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:40,270 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:40,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:40,277 INFO L225 Difference]: With dead ends: 3897 [2021-06-01 17:33:40,277 INFO L226 Difference]: Without dead ends: 3650 [2021-06-01 17:33:40,277 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:40,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3650 states. [2021-06-01 17:33:40,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3650 to 1837. [2021-06-01 17:33:40,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1837 states, 1836 states have (on average 4.049564270152506) internal successors, (7435), 1836 states have internal predecessors, (7435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:40,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1837 states to 1837 states and 7435 transitions. [2021-06-01 17:33:40,324 INFO L78 Accepts]: Start accepts. Automaton has 1837 states and 7435 transitions. Word has length 25 [2021-06-01 17:33:40,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:40,324 INFO L482 AbstractCegarLoop]: Abstraction has 1837 states and 7435 transitions. [2021-06-01 17:33:40,324 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:40,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1837 states and 7435 transitions. [2021-06-01 17:33:40,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:40,326 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:40,326 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:40,326 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2021-06-01 17:33:40,327 INFO L430 AbstractCegarLoop]: === Iteration 294 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:40,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:40,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1262365371, now seen corresponding path program 290 times [2021-06-01 17:33:40,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:40,327 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741132081] [2021-06-01 17:33:40,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:40,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:40,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:40,420 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:40,420 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741132081] [2021-06-01 17:33:40,420 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741132081] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:40,420 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:40,420 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:40,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815110007] [2021-06-01 17:33:40,420 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:40,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:40,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:40,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:40,421 INFO L87 Difference]: Start difference. First operand 1837 states and 7435 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:40,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:40,477 INFO L93 Difference]: Finished difference Result 3968 states and 15047 transitions. [2021-06-01 17:33:40,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:40,478 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:40,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:40,485 INFO L225 Difference]: With dead ends: 3968 [2021-06-01 17:33:40,485 INFO L226 Difference]: Without dead ends: 3606 [2021-06-01 17:33:40,485 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:40,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3606 states. [2021-06-01 17:33:40,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3606 to 1793. [2021-06-01 17:33:40,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1793 states, 1792 states have (on average 4.055245535714286) internal successors, (7267), 1792 states have internal predecessors, (7267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:40,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 7267 transitions. [2021-06-01 17:33:40,532 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 7267 transitions. Word has length 25 [2021-06-01 17:33:40,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:40,532 INFO L482 AbstractCegarLoop]: Abstraction has 1793 states and 7267 transitions. [2021-06-01 17:33:40,532 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:40,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 7267 transitions. [2021-06-01 17:33:40,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:40,535 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:40,535 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:40,535 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2021-06-01 17:33:40,535 INFO L430 AbstractCegarLoop]: === Iteration 295 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:40,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:40,535 INFO L82 PathProgramCache]: Analyzing trace with hash 954514457, now seen corresponding path program 291 times [2021-06-01 17:33:40,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:40,535 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488705953] [2021-06-01 17:33:40,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:40,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:40,622 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:40,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488705953] [2021-06-01 17:33:40,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488705953] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:40,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:40,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:40,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625631609] [2021-06-01 17:33:40,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:40,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:40,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:40,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:40,623 INFO L87 Difference]: Start difference. First operand 1793 states and 7267 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:40,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:40,678 INFO L93 Difference]: Finished difference Result 3798 states and 14409 transitions. [2021-06-01 17:33:40,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:40,679 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:40,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:40,686 INFO L225 Difference]: With dead ends: 3798 [2021-06-01 17:33:40,686 INFO L226 Difference]: Without dead ends: 3551 [2021-06-01 17:33:40,686 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:40,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3551 states. [2021-06-01 17:33:40,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3551 to 1809. [2021-06-01 17:33:40,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 4.0459070796460175) internal successors, (7315), 1808 states have internal predecessors, (7315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:40,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 7315 transitions. [2021-06-01 17:33:40,731 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 7315 transitions. Word has length 25 [2021-06-01 17:33:40,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:40,731 INFO L482 AbstractCegarLoop]: Abstraction has 1809 states and 7315 transitions. [2021-06-01 17:33:40,732 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:40,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 7315 transitions. [2021-06-01 17:33:40,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:40,734 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:40,734 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:40,734 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2021-06-01 17:33:40,734 INFO L430 AbstractCegarLoop]: === Iteration 296 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:40,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:40,735 INFO L82 PathProgramCache]: Analyzing trace with hash -593407877, now seen corresponding path program 292 times [2021-06-01 17:33:40,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:40,735 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210655028] [2021-06-01 17:33:40,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:40,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:40,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:40,821 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:40,821 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210655028] [2021-06-01 17:33:40,821 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210655028] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:40,821 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:40,821 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:40,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960167759] [2021-06-01 17:33:40,821 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:40,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:40,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:40,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:40,822 INFO L87 Difference]: Start difference. First operand 1809 states and 7315 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:40,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:40,893 INFO L93 Difference]: Finished difference Result 3798 states and 14393 transitions. [2021-06-01 17:33:40,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:40,893 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:40,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:40,900 INFO L225 Difference]: With dead ends: 3798 [2021-06-01 17:33:40,900 INFO L226 Difference]: Without dead ends: 3535 [2021-06-01 17:33:40,900 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:40,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3535 states. [2021-06-01 17:33:40,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3535 to 1793. [2021-06-01 17:33:40,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1793 states, 1792 states have (on average 4.05078125) internal successors, (7259), 1792 states have internal predecessors, (7259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:40,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 7259 transitions. [2021-06-01 17:33:40,945 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 7259 transitions. Word has length 25 [2021-06-01 17:33:40,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:40,945 INFO L482 AbstractCegarLoop]: Abstraction has 1793 states and 7259 transitions. [2021-06-01 17:33:40,945 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:40,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 7259 transitions. [2021-06-01 17:33:40,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:40,948 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:40,948 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:40,948 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2021-06-01 17:33:40,948 INFO L430 AbstractCegarLoop]: === Iteration 297 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:40,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:40,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1231571363, now seen corresponding path program 293 times [2021-06-01 17:33:40,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:40,948 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919927228] [2021-06-01 17:33:40,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:40,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:41,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:41,044 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:41,044 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919927228] [2021-06-01 17:33:41,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919927228] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:41,044 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:41,044 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:41,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316309916] [2021-06-01 17:33:41,044 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:41,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:41,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:41,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:41,044 INFO L87 Difference]: Start difference. First operand 1793 states and 7259 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:41,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:41,108 INFO L93 Difference]: Finished difference Result 3897 states and 14784 transitions. [2021-06-01 17:33:41,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:41,109 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:41,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:41,116 INFO L225 Difference]: With dead ends: 3897 [2021-06-01 17:33:41,116 INFO L226 Difference]: Without dead ends: 3650 [2021-06-01 17:33:41,116 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:41,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3650 states. [2021-06-01 17:33:41,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3650 to 1837. [2021-06-01 17:33:41,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1837 states, 1836 states have (on average 4.036492374727668) internal successors, (7411), 1836 states have internal predecessors, (7411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:41,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1837 states to 1837 states and 7411 transitions. [2021-06-01 17:33:41,164 INFO L78 Accepts]: Start accepts. Automaton has 1837 states and 7411 transitions. Word has length 25 [2021-06-01 17:33:41,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:41,164 INFO L482 AbstractCegarLoop]: Abstraction has 1837 states and 7411 transitions. [2021-06-01 17:33:41,164 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:41,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1837 states and 7411 transitions. [2021-06-01 17:33:41,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:41,167 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:41,167 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:41,167 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2021-06-01 17:33:41,167 INFO L430 AbstractCegarLoop]: === Iteration 298 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:41,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:41,167 INFO L82 PathProgramCache]: Analyzing trace with hash 2059063995, now seen corresponding path program 294 times [2021-06-01 17:33:41,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:41,167 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413638389] [2021-06-01 17:33:41,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:41,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:41,277 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:41,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413638389] [2021-06-01 17:33:41,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413638389] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:41,277 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:41,277 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:41,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857173742] [2021-06-01 17:33:41,277 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:41,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:41,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:41,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:41,277 INFO L87 Difference]: Start difference. First operand 1837 states and 7411 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:41,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:41,331 INFO L93 Difference]: Finished difference Result 3968 states and 15023 transitions. [2021-06-01 17:33:41,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:41,331 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:41,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:41,338 INFO L225 Difference]: With dead ends: 3968 [2021-06-01 17:33:41,338 INFO L226 Difference]: Without dead ends: 3590 [2021-06-01 17:33:41,338 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:41,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3590 states. [2021-06-01 17:33:41,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3590 to 1777. [2021-06-01 17:33:41,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1777 states, 1776 states have (on average 4.055743243243243) internal successors, (7203), 1776 states have internal predecessors, (7203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:41,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 7203 transitions. [2021-06-01 17:33:41,385 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 7203 transitions. Word has length 25 [2021-06-01 17:33:41,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:41,385 INFO L482 AbstractCegarLoop]: Abstraction has 1777 states and 7203 transitions. [2021-06-01 17:33:41,385 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:41,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 7203 transitions. [2021-06-01 17:33:41,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:41,387 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:41,388 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:41,388 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2021-06-01 17:33:41,388 INFO L430 AbstractCegarLoop]: === Iteration 299 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:41,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:41,388 INFO L82 PathProgramCache]: Analyzing trace with hash 308947003, now seen corresponding path program 295 times [2021-06-01 17:33:41,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:41,388 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576431659] [2021-06-01 17:33:41,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:41,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:41,499 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:41,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576431659] [2021-06-01 17:33:41,499 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576431659] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:41,499 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:41,499 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:41,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69974015] [2021-06-01 17:33:41,500 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:41,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:41,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:41,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:41,500 INFO L87 Difference]: Start difference. First operand 1777 states and 7203 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:41,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:41,553 INFO L93 Difference]: Finished difference Result 3869 states and 14696 transitions. [2021-06-01 17:33:41,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:41,553 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:41,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:41,560 INFO L225 Difference]: With dead ends: 3869 [2021-06-01 17:33:41,560 INFO L226 Difference]: Without dead ends: 3622 [2021-06-01 17:33:41,560 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:41,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2021-06-01 17:33:41,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 1841. [2021-06-01 17:33:41,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 4.047282608695652) internal successors, (7447), 1840 states have internal predecessors, (7447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:41,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 7447 transitions. [2021-06-01 17:33:41,605 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 7447 transitions. Word has length 25 [2021-06-01 17:33:41,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:41,605 INFO L482 AbstractCegarLoop]: Abstraction has 1841 states and 7447 transitions. [2021-06-01 17:33:41,605 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:41,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 7447 transitions. [2021-06-01 17:33:41,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:41,607 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:41,607 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:41,608 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2021-06-01 17:33:41,608 INFO L430 AbstractCegarLoop]: === Iteration 300 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:41,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:41,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1323000163, now seen corresponding path program 296 times [2021-06-01 17:33:41,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:41,608 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149818269] [2021-06-01 17:33:41,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:41,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:41,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:41,700 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:41,700 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149818269] [2021-06-01 17:33:41,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149818269] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:41,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:41,700 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:41,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582416056] [2021-06-01 17:33:41,700 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:41,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:41,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:41,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:41,701 INFO L87 Difference]: Start difference. First operand 1841 states and 7447 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:41,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:41,770 INFO L93 Difference]: Finished difference Result 3940 states and 14935 transitions. [2021-06-01 17:33:41,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:41,770 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:41,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:41,778 INFO L225 Difference]: With dead ends: 3940 [2021-06-01 17:33:41,778 INFO L226 Difference]: Without dead ends: 3578 [2021-06-01 17:33:41,778 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:41,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3578 states. [2021-06-01 17:33:41,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3578 to 1797. [2021-06-01 17:33:41,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1797 states, 1796 states have (on average 4.0506681514476615) internal successors, (7275), 1796 states have internal predecessors, (7275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:41,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 7275 transitions. [2021-06-01 17:33:41,822 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 7275 transitions. Word has length 25 [2021-06-01 17:33:41,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:41,822 INFO L482 AbstractCegarLoop]: Abstraction has 1797 states and 7275 transitions. [2021-06-01 17:33:41,822 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:41,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 7275 transitions. [2021-06-01 17:33:41,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:41,824 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:41,824 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:41,824 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2021-06-01 17:33:41,824 INFO L430 AbstractCegarLoop]: === Iteration 301 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:41,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:41,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1962939367, now seen corresponding path program 297 times [2021-06-01 17:33:41,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:41,825 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999032666] [2021-06-01 17:33:41,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:41,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:41,910 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:41,910 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999032666] [2021-06-01 17:33:41,910 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999032666] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:41,910 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:41,910 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:41,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666634528] [2021-06-01 17:33:41,911 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:41,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:41,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:41,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:41,911 INFO L87 Difference]: Start difference. First operand 1797 states and 7275 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:41,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:41,969 INFO L93 Difference]: Finished difference Result 3738 states and 14197 transitions. [2021-06-01 17:33:41,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:41,969 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:41,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:41,976 INFO L225 Difference]: With dead ends: 3738 [2021-06-01 17:33:41,976 INFO L226 Difference]: Without dead ends: 3491 [2021-06-01 17:33:41,976 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:41,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3491 states. [2021-06-01 17:33:42,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3491 to 1821. [2021-06-01 17:33:42,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1821 states, 1820 states have (on average 4.039010989010989) internal successors, (7351), 1820 states have internal predecessors, (7351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:42,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 7351 transitions. [2021-06-01 17:33:42,021 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 7351 transitions. Word has length 25 [2021-06-01 17:33:42,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:42,021 INFO L482 AbstractCegarLoop]: Abstraction has 1821 states and 7351 transitions. [2021-06-01 17:33:42,021 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:42,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 7351 transitions. [2021-06-01 17:33:42,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:42,023 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:42,023 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:42,023 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2021-06-01 17:33:42,023 INFO L430 AbstractCegarLoop]: === Iteration 302 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:42,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:42,023 INFO L82 PathProgramCache]: Analyzing trace with hash 805111803, now seen corresponding path program 298 times [2021-06-01 17:33:42,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:42,024 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324356211] [2021-06-01 17:33:42,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:42,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:42,109 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:42,109 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324356211] [2021-06-01 17:33:42,109 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324356211] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:42,109 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:42,109 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:42,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862296665] [2021-06-01 17:33:42,109 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:42,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:42,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:42,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:42,109 INFO L87 Difference]: Start difference. First operand 1821 states and 7351 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:42,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:42,176 INFO L93 Difference]: Finished difference Result 3562 states and 13620 transitions. [2021-06-01 17:33:42,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:42,176 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:42,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:42,182 INFO L225 Difference]: With dead ends: 3562 [2021-06-01 17:33:42,183 INFO L226 Difference]: Without dead ends: 3275 [2021-06-01 17:33:42,183 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:42,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2021-06-01 17:33:42,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 1797. [2021-06-01 17:33:42,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1797 states, 1796 states have (on average 4.043986636971047) internal successors, (7263), 1796 states have internal predecessors, (7263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:42,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 7263 transitions. [2021-06-01 17:33:42,225 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 7263 transitions. Word has length 25 [2021-06-01 17:33:42,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:42,225 INFO L482 AbstractCegarLoop]: Abstraction has 1797 states and 7263 transitions. [2021-06-01 17:33:42,225 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:42,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 7263 transitions. [2021-06-01 17:33:42,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:42,227 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:42,227 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:42,228 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable301 [2021-06-01 17:33:42,228 INFO L430 AbstractCegarLoop]: === Iteration 303 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:42,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:42,228 INFO L82 PathProgramCache]: Analyzing trace with hash 166948317, now seen corresponding path program 299 times [2021-06-01 17:33:42,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:42,228 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171728064] [2021-06-01 17:33:42,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:42,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:42,355 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:42,355 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171728064] [2021-06-01 17:33:42,355 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171728064] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:42,355 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:42,355 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:42,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125196807] [2021-06-01 17:33:42,355 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:42,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:42,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:42,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:42,355 INFO L87 Difference]: Start difference. First operand 1797 states and 7263 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:42,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:42,426 INFO L93 Difference]: Finished difference Result 3909 states and 14848 transitions. [2021-06-01 17:33:42,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:42,426 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:42,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:42,433 INFO L225 Difference]: With dead ends: 3909 [2021-06-01 17:33:42,434 INFO L226 Difference]: Without dead ends: 3646 [2021-06-01 17:33:42,434 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 145.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:42,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3646 states. [2021-06-01 17:33:42,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3646 to 1849. [2021-06-01 17:33:42,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1849 states, 1848 states have (on average 4.029761904761905) internal successors, (7447), 1848 states have internal predecessors, (7447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:42,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1849 states to 1849 states and 7447 transitions. [2021-06-01 17:33:42,478 INFO L78 Accepts]: Start accepts. Automaton has 1849 states and 7447 transitions. Word has length 25 [2021-06-01 17:33:42,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:42,478 INFO L482 AbstractCegarLoop]: Abstraction has 1849 states and 7447 transitions. [2021-06-01 17:33:42,479 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:42,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1849 states and 7447 transitions. [2021-06-01 17:33:42,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:42,481 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:42,481 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:42,481 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302 [2021-06-01 17:33:42,481 INFO L430 AbstractCegarLoop]: === Iteration 304 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:42,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:42,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1488576069, now seen corresponding path program 300 times [2021-06-01 17:33:42,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:42,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144849507] [2021-06-01 17:33:42,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:42,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:42,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:42,577 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:42,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144849507] [2021-06-01 17:33:42,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144849507] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:42,577 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:42,577 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:42,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804207077] [2021-06-01 17:33:42,577 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:42,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:42,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:42,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:42,577 INFO L87 Difference]: Start difference. First operand 1849 states and 7447 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:42,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:42,632 INFO L93 Difference]: Finished difference Result 3837 states and 14536 transitions. [2021-06-01 17:33:42,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:42,632 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:42,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:42,639 INFO L225 Difference]: With dead ends: 3837 [2021-06-01 17:33:42,639 INFO L226 Difference]: Without dead ends: 3447 [2021-06-01 17:33:42,639 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:42,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3447 states. [2021-06-01 17:33:42,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3447 to 1777. [2021-06-01 17:33:42,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1777 states, 1776 states have (on average 4.051238738738738) internal successors, (7195), 1776 states have internal predecessors, (7195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:42,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 7195 transitions. [2021-06-01 17:33:42,686 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 7195 transitions. Word has length 25 [2021-06-01 17:33:42,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:42,686 INFO L482 AbstractCegarLoop]: Abstraction has 1777 states and 7195 transitions. [2021-06-01 17:33:42,686 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:42,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 7195 transitions. [2021-06-01 17:33:42,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:42,689 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:42,689 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:42,689 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303 [2021-06-01 17:33:42,689 INFO L430 AbstractCegarLoop]: === Iteration 305 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:42,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:42,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1456409639, now seen corresponding path program 301 times [2021-06-01 17:33:42,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:42,689 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039781351] [2021-06-01 17:33:42,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:42,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:42,769 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:42,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039781351] [2021-06-01 17:33:42,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039781351] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:42,769 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:42,769 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:42,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485816355] [2021-06-01 17:33:42,769 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:42,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:42,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:42,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:42,770 INFO L87 Difference]: Start difference. First operand 1777 states and 7195 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:42,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:42,824 INFO L93 Difference]: Finished difference Result 3603 states and 13658 transitions. [2021-06-01 17:33:42,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:42,824 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:42,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:42,831 INFO L225 Difference]: With dead ends: 3603 [2021-06-01 17:33:42,831 INFO L226 Difference]: Without dead ends: 3356 [2021-06-01 17:33:42,831 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 85.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:42,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3356 states. [2021-06-01 17:33:42,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3356 to 1801. [2021-06-01 17:33:42,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1801 states, 1800 states have (on average 4.043888888888889) internal successors, (7279), 1800 states have internal predecessors, (7279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:42,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 7279 transitions. [2021-06-01 17:33:42,875 INFO L78 Accepts]: Start accepts. Automaton has 1801 states and 7279 transitions. Word has length 25 [2021-06-01 17:33:42,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:42,875 INFO L482 AbstractCegarLoop]: Abstraction has 1801 states and 7279 transitions. [2021-06-01 17:33:42,876 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:42,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1801 states and 7279 transitions. [2021-06-01 17:33:42,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:42,878 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:42,878 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:42,878 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304 [2021-06-01 17:33:42,878 INFO L430 AbstractCegarLoop]: === Iteration 306 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:42,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:42,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1290635323, now seen corresponding path program 302 times [2021-06-01 17:33:42,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:42,878 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347563344] [2021-06-01 17:33:42,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:42,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:42,964 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:42,965 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347563344] [2021-06-01 17:33:42,965 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347563344] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:42,965 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:42,965 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:42,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762971] [2021-06-01 17:33:42,965 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:42,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:42,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:42,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:42,965 INFO L87 Difference]: Start difference. First operand 1801 states and 7279 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:43,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:43,048 INFO L93 Difference]: Finished difference Result 3603 states and 13642 transitions. [2021-06-01 17:33:43,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:43,048 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:43,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:43,054 INFO L225 Difference]: With dead ends: 3603 [2021-06-01 17:33:43,055 INFO L226 Difference]: Without dead ends: 3340 [2021-06-01 17:33:43,055 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:43,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3340 states. [2021-06-01 17:33:43,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3340 to 1785. [2021-06-01 17:33:43,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1784 states have (on average 4.048766816143497) internal successors, (7223), 1784 states have internal predecessors, (7223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:43,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 7223 transitions. [2021-06-01 17:33:43,098 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 7223 transitions. Word has length 25 [2021-06-01 17:33:43,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:43,098 INFO L482 AbstractCegarLoop]: Abstraction has 1785 states and 7223 transitions. [2021-06-01 17:33:43,098 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:43,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 7223 transitions. [2021-06-01 17:33:43,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:43,100 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:43,100 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:43,100 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305 [2021-06-01 17:33:43,100 INFO L430 AbstractCegarLoop]: === Iteration 307 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:43,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:43,101 INFO L82 PathProgramCache]: Analyzing trace with hash -375347013, now seen corresponding path program 303 times [2021-06-01 17:33:43,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:43,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65291052] [2021-06-01 17:33:43,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:43,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:43,182 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:43,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65291052] [2021-06-01 17:33:43,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65291052] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:43,182 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:43,182 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:43,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011523897] [2021-06-01 17:33:43,182 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:43,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:43,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:43,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:43,182 INFO L87 Difference]: Start difference. First operand 1785 states and 7223 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:43,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:43,234 INFO L93 Difference]: Finished difference Result 3547 states and 13454 transitions. [2021-06-01 17:33:43,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:43,234 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:43,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:43,241 INFO L225 Difference]: With dead ends: 3547 [2021-06-01 17:33:43,241 INFO L226 Difference]: Without dead ends: 3300 [2021-06-01 17:33:43,241 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 86.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:43,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3300 states. [2021-06-01 17:33:43,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3300 to 1809. [2021-06-01 17:33:43,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 4.037057522123894) internal successors, (7299), 1808 states have internal predecessors, (7299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:43,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 7299 transitions. [2021-06-01 17:33:43,283 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 7299 transitions. Word has length 25 [2021-06-01 17:33:43,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:43,283 INFO L482 AbstractCegarLoop]: Abstraction has 1809 states and 7299 transitions. [2021-06-01 17:33:43,283 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:43,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 7299 transitions. [2021-06-01 17:33:43,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:43,286 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:43,286 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:43,286 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306 [2021-06-01 17:33:43,286 INFO L430 AbstractCegarLoop]: === Iteration 308 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:43,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:43,286 INFO L82 PathProgramCache]: Analyzing trace with hash 674963387, now seen corresponding path program 304 times [2021-06-01 17:33:43,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:43,286 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276158664] [2021-06-01 17:33:43,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:43,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:43,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:43,366 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:43,367 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276158664] [2021-06-01 17:33:43,367 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276158664] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:43,367 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:43,367 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:43,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546328822] [2021-06-01 17:33:43,367 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:43,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:43,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:43,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:43,367 INFO L87 Difference]: Start difference. First operand 1809 states and 7299 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:43,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:43,434 INFO L93 Difference]: Finished difference Result 3371 states and 12877 transitions. [2021-06-01 17:33:43,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:43,435 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:43,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:43,441 INFO L225 Difference]: With dead ends: 3371 [2021-06-01 17:33:43,441 INFO L226 Difference]: Without dead ends: 3084 [2021-06-01 17:33:43,441 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:43,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3084 states. [2021-06-01 17:33:43,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3084 to 1785. [2021-06-01 17:33:43,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1784 states have (on average 4.0442825112107625) internal successors, (7215), 1784 states have internal predecessors, (7215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:43,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 7215 transitions. [2021-06-01 17:33:43,483 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 7215 transitions. Word has length 25 [2021-06-01 17:33:43,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:43,483 INFO L482 AbstractCegarLoop]: Abstraction has 1785 states and 7215 transitions. [2021-06-01 17:33:43,483 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:43,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 7215 transitions. [2021-06-01 17:33:43,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:43,486 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:43,486 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:43,486 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307 [2021-06-01 17:33:43,486 INFO L430 AbstractCegarLoop]: === Iteration 309 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:43,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:43,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1491913827, now seen corresponding path program 305 times [2021-06-01 17:33:43,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:43,486 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69288241] [2021-06-01 17:33:43,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:43,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:43,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:43,576 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:43,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69288241] [2021-06-01 17:33:43,576 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69288241] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:43,576 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:43,576 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:43,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788635075] [2021-06-01 17:33:43,577 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:43,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:43,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:43,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:43,577 INFO L87 Difference]: Start difference. First operand 1785 states and 7215 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:43,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:43,665 INFO L93 Difference]: Finished difference Result 3355 states and 12821 transitions. [2021-06-01 17:33:43,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:43,665 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:43,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:43,672 INFO L225 Difference]: With dead ends: 3355 [2021-06-01 17:33:43,672 INFO L226 Difference]: Without dead ends: 3108 [2021-06-01 17:33:43,672 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 130.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:43,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3108 states. [2021-06-01 17:33:43,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3108 to 1809. [2021-06-01 17:33:43,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 4.032632743362832) internal successors, (7291), 1808 states have internal predecessors, (7291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:43,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 7291 transitions. [2021-06-01 17:33:43,713 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 7291 transitions. Word has length 25 [2021-06-01 17:33:43,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:43,713 INFO L482 AbstractCegarLoop]: Abstraction has 1809 states and 7291 transitions. [2021-06-01 17:33:43,713 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:43,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 7291 transitions. [2021-06-01 17:33:43,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:43,715 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:43,715 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:43,716 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308 [2021-06-01 17:33:43,716 INFO L430 AbstractCegarLoop]: === Iteration 310 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:43,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:43,716 INFO L82 PathProgramCache]: Analyzing trace with hash 759716475, now seen corresponding path program 306 times [2021-06-01 17:33:43,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:43,716 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718301739] [2021-06-01 17:33:43,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:43,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:43,797 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:43,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718301739] [2021-06-01 17:33:43,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718301739] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:43,797 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:43,797 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:43,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409543333] [2021-06-01 17:33:43,797 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:43,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:43,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:43,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:43,797 INFO L87 Difference]: Start difference. First operand 1809 states and 7291 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:43,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:43,868 INFO L93 Difference]: Finished difference Result 3107 states and 11968 transitions. [2021-06-01 17:33:43,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:43,868 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:43,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:43,874 INFO L225 Difference]: With dead ends: 3107 [2021-06-01 17:33:43,874 INFO L226 Difference]: Without dead ends: 2812 [2021-06-01 17:33:43,874 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:43,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2812 states. [2021-06-01 17:33:43,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2812 to 1777. [2021-06-01 17:33:43,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1777 states, 1776 states have (on average 4.048986486486487) internal successors, (7191), 1776 states have internal predecessors, (7191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:43,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 7191 transitions. [2021-06-01 17:33:43,913 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 7191 transitions. Word has length 25 [2021-06-01 17:33:43,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:43,913 INFO L482 AbstractCegarLoop]: Abstraction has 1777 states and 7191 transitions. [2021-06-01 17:33:43,913 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:43,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 7191 transitions. [2021-06-01 17:33:43,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:43,916 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:43,916 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:43,916 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309 [2021-06-01 17:33:43,916 INFO L430 AbstractCegarLoop]: === Iteration 311 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:43,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:43,916 INFO L82 PathProgramCache]: Analyzing trace with hash -586700545, now seen corresponding path program 307 times [2021-06-01 17:33:43,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:43,916 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343304589] [2021-06-01 17:33:43,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:43,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:44,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:44,001 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:44,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343304589] [2021-06-01 17:33:44,001 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343304589] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:44,001 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:44,001 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:44,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478530653] [2021-06-01 17:33:44,001 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:44,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:44,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:44,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:44,001 INFO L87 Difference]: Start difference. First operand 1777 states and 7191 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:44,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:44,070 INFO L93 Difference]: Finished difference Result 3838 states and 14589 transitions. [2021-06-01 17:33:44,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:44,070 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:44,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:44,077 INFO L225 Difference]: With dead ends: 3838 [2021-06-01 17:33:44,077 INFO L226 Difference]: Without dead ends: 3591 [2021-06-01 17:33:44,077 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:44,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3591 states. [2021-06-01 17:33:44,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3591 to 1821. [2021-06-01 17:33:44,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1821 states, 1820 states have (on average 4.043406593406593) internal successors, (7359), 1820 states have internal predecessors, (7359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:44,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 7359 transitions. [2021-06-01 17:33:44,122 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 7359 transitions. Word has length 25 [2021-06-01 17:33:44,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:44,122 INFO L482 AbstractCegarLoop]: Abstraction has 1821 states and 7359 transitions. [2021-06-01 17:33:44,122 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:44,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 7359 transitions. [2021-06-01 17:33:44,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:44,125 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:44,125 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:44,125 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable310 [2021-06-01 17:33:44,125 INFO L430 AbstractCegarLoop]: === Iteration 312 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:44,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:44,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1664929757, now seen corresponding path program 308 times [2021-06-01 17:33:44,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:44,125 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951001889] [2021-06-01 17:33:44,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:44,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:44,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:44,210 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:44,210 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951001889] [2021-06-01 17:33:44,210 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951001889] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:44,210 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:44,210 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:44,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835252143] [2021-06-01 17:33:44,210 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:44,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:44,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:44,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:44,211 INFO L87 Difference]: Start difference. First operand 1821 states and 7359 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:44,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:44,278 INFO L93 Difference]: Finished difference Result 3854 states and 14637 transitions. [2021-06-01 17:33:44,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:44,279 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:44,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:44,286 INFO L225 Difference]: With dead ends: 3854 [2021-06-01 17:33:44,286 INFO L226 Difference]: Without dead ends: 3567 [2021-06-01 17:33:44,286 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:44,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3567 states. [2021-06-01 17:33:44,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3567 to 1797. [2021-06-01 17:33:44,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1797 states, 1796 states have (on average 4.048440979955457) internal successors, (7271), 1796 states have internal predecessors, (7271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:44,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 7271 transitions. [2021-06-01 17:33:44,329 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 7271 transitions. Word has length 25 [2021-06-01 17:33:44,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:44,330 INFO L482 AbstractCegarLoop]: Abstraction has 1797 states and 7271 transitions. [2021-06-01 17:33:44,330 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:44,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 7271 transitions. [2021-06-01 17:33:44,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:44,332 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:44,332 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:44,332 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311 [2021-06-01 17:33:44,332 INFO L430 AbstractCegarLoop]: === Iteration 313 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:44,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:44,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1887231325, now seen corresponding path program 309 times [2021-06-01 17:33:44,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:44,332 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617650709] [2021-06-01 17:33:44,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:44,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:44,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:44,426 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:44,426 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617650709] [2021-06-01 17:33:44,427 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617650709] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:44,427 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:44,427 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:44,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851826395] [2021-06-01 17:33:44,427 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:44,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:44,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:44,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:44,427 INFO L87 Difference]: Start difference. First operand 1797 states and 7271 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:44,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:44,496 INFO L93 Difference]: Finished difference Result 3742 states and 14201 transitions. [2021-06-01 17:33:44,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:44,496 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:44,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:44,503 INFO L225 Difference]: With dead ends: 3742 [2021-06-01 17:33:44,503 INFO L226 Difference]: Without dead ends: 3495 [2021-06-01 17:33:44,503 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:44,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3495 states. [2021-06-01 17:33:44,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3495 to 1841. [2021-06-01 17:33:44,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 4.034239130434782) internal successors, (7423), 1840 states have internal predecessors, (7423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:44,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 7423 transitions. [2021-06-01 17:33:44,547 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 7423 transitions. Word has length 25 [2021-06-01 17:33:44,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:44,547 INFO L482 AbstractCegarLoop]: Abstraction has 1841 states and 7423 transitions. [2021-06-01 17:33:44,547 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:44,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 7423 transitions. [2021-06-01 17:33:44,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:44,550 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:44,550 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:44,550 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable312 [2021-06-01 17:33:44,550 INFO L430 AbstractCegarLoop]: === Iteration 314 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:44,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:44,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1690167971, now seen corresponding path program 310 times [2021-06-01 17:33:44,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:44,550 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793229476] [2021-06-01 17:33:44,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:44,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:44,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:44,646 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:44,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793229476] [2021-06-01 17:33:44,646 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793229476] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:44,646 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:44,646 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:44,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389343110] [2021-06-01 17:33:44,646 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:44,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:44,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:44,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:44,646 INFO L87 Difference]: Start difference. First operand 1841 states and 7423 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:44,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:44,699 INFO L93 Difference]: Finished difference Result 3813 states and 14440 transitions. [2021-06-01 17:33:44,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:44,699 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:44,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:44,706 INFO L225 Difference]: With dead ends: 3813 [2021-06-01 17:33:44,706 INFO L226 Difference]: Without dead ends: 3451 [2021-06-01 17:33:44,706 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:44,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3451 states. [2021-06-01 17:33:44,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3451 to 1797. [2021-06-01 17:33:44,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1797 states, 1796 states have (on average 4.037305122494432) internal successors, (7251), 1796 states have internal predecessors, (7251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:44,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 7251 transitions. [2021-06-01 17:33:44,749 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 7251 transitions. Word has length 25 [2021-06-01 17:33:44,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:44,749 INFO L482 AbstractCegarLoop]: Abstraction has 1797 states and 7251 transitions. [2021-06-01 17:33:44,749 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:44,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 7251 transitions. [2021-06-01 17:33:44,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:44,752 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:44,752 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:44,752 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313 [2021-06-01 17:33:44,752 INFO L430 AbstractCegarLoop]: === Iteration 315 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:44,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:44,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1425388357, now seen corresponding path program 311 times [2021-06-01 17:33:44,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:44,752 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625791734] [2021-06-01 17:33:44,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:44,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:44,845 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:44,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625791734] [2021-06-01 17:33:44,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625791734] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:44,845 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:44,845 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:44,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938110220] [2021-06-01 17:33:44,846 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:44,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:44,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:44,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:44,846 INFO L87 Difference]: Start difference. First operand 1797 states and 7251 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:44,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:44,912 INFO L93 Difference]: Finished difference Result 3730 states and 14145 transitions. [2021-06-01 17:33:44,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:44,912 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:44,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:44,919 INFO L225 Difference]: With dead ends: 3730 [2021-06-01 17:33:44,919 INFO L226 Difference]: Without dead ends: 3467 [2021-06-01 17:33:44,919 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:44,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3467 states. [2021-06-01 17:33:44,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3467 to 1849. [2021-06-01 17:33:44,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1849 states, 1848 states have (on average 4.0232683982683985) internal successors, (7435), 1848 states have internal predecessors, (7435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:44,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1849 states to 1849 states and 7435 transitions. [2021-06-01 17:33:44,962 INFO L78 Accepts]: Start accepts. Automaton has 1849 states and 7435 transitions. Word has length 25 [2021-06-01 17:33:44,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:44,962 INFO L482 AbstractCegarLoop]: Abstraction has 1849 states and 7435 transitions. [2021-06-01 17:33:44,962 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:44,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1849 states and 7435 transitions. [2021-06-01 17:33:44,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:44,965 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:44,965 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:44,965 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable314 [2021-06-01 17:33:44,965 INFO L430 AbstractCegarLoop]: === Iteration 316 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:44,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:44,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1207036771, now seen corresponding path program 312 times [2021-06-01 17:33:44,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:44,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397710189] [2021-06-01 17:33:44,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:44,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:45,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:45,059 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:45,059 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397710189] [2021-06-01 17:33:45,059 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397710189] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:45,059 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:45,059 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:45,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090141670] [2021-06-01 17:33:45,060 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:45,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:45,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:45,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:45,060 INFO L87 Difference]: Start difference. First operand 1849 states and 7435 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:45,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:45,113 INFO L93 Difference]: Finished difference Result 3658 states and 13833 transitions. [2021-06-01 17:33:45,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:45,113 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:45,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:45,120 INFO L225 Difference]: With dead ends: 3658 [2021-06-01 17:33:45,120 INFO L226 Difference]: Without dead ends: 3260 [2021-06-01 17:33:45,120 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:45,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3260 states. [2021-06-01 17:33:45,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3260 to 1769. [2021-06-01 17:33:45,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1769 states, 1768 states have (on average 4.053733031674208) internal successors, (7167), 1768 states have internal predecessors, (7167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:45,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1769 states to 1769 states and 7167 transitions. [2021-06-01 17:33:45,161 INFO L78 Accepts]: Start accepts. Automaton has 1769 states and 7167 transitions. Word has length 25 [2021-06-01 17:33:45,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:45,161 INFO L482 AbstractCegarLoop]: Abstraction has 1769 states and 7167 transitions. [2021-06-01 17:33:45,162 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:45,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1769 states and 7167 transitions. [2021-06-01 17:33:45,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:45,164 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:45,164 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:45,164 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315 [2021-06-01 17:33:45,164 INFO L430 AbstractCegarLoop]: === Iteration 317 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:45,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:45,164 INFO L82 PathProgramCache]: Analyzing trace with hash -772928521, now seen corresponding path program 313 times [2021-06-01 17:33:45,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:45,164 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627212408] [2021-06-01 17:33:45,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:45,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:45,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:45,245 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:45,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627212408] [2021-06-01 17:33:45,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627212408] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:45,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:45,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:45,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569390485] [2021-06-01 17:33:45,246 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:45,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:45,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:45,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:45,246 INFO L87 Difference]: Start difference. First operand 1769 states and 7167 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:45,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:45,301 INFO L93 Difference]: Finished difference Result 3690 states and 14014 transitions. [2021-06-01 17:33:45,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:45,301 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:45,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:45,308 INFO L225 Difference]: With dead ends: 3690 [2021-06-01 17:33:45,308 INFO L226 Difference]: Without dead ends: 3443 [2021-06-01 17:33:45,308 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 87.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:45,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3443 states. [2021-06-01 17:33:45,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3443 to 1809. [2021-06-01 17:33:45,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 4.043694690265487) internal successors, (7311), 1808 states have internal predecessors, (7311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:45,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 7311 transitions. [2021-06-01 17:33:45,351 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 7311 transitions. Word has length 25 [2021-06-01 17:33:45,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:45,351 INFO L482 AbstractCegarLoop]: Abstraction has 1809 states and 7311 transitions. [2021-06-01 17:33:45,351 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:45,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 7311 transitions. [2021-06-01 17:33:45,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:45,354 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:45,354 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:45,354 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable316 [2021-06-01 17:33:45,354 INFO L430 AbstractCegarLoop]: === Iteration 318 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:45,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:45,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1932104025, now seen corresponding path program 314 times [2021-06-01 17:33:45,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:45,354 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007439683] [2021-06-01 17:33:45,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:45,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:45,434 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:45,434 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007439683] [2021-06-01 17:33:45,434 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007439683] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:45,434 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:45,434 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:45,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992775931] [2021-06-01 17:33:45,435 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:45,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:45,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:45,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:45,435 INFO L87 Difference]: Start difference. First operand 1809 states and 7311 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:45,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:45,503 INFO L93 Difference]: Finished difference Result 3728 states and 14139 transitions. [2021-06-01 17:33:45,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:45,503 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:45,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:45,510 INFO L225 Difference]: With dead ends: 3728 [2021-06-01 17:33:45,510 INFO L226 Difference]: Without dead ends: 3415 [2021-06-01 17:33:45,510 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:45,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3415 states. [2021-06-01 17:33:45,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3415 to 1781. [2021-06-01 17:33:45,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1781 states, 1780 states have (on average 4.053370786516854) internal successors, (7215), 1780 states have internal predecessors, (7215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:45,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1781 states to 1781 states and 7215 transitions. [2021-06-01 17:33:45,555 INFO L78 Accepts]: Start accepts. Automaton has 1781 states and 7215 transitions. Word has length 25 [2021-06-01 17:33:45,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:45,555 INFO L482 AbstractCegarLoop]: Abstraction has 1781 states and 7215 transitions. [2021-06-01 17:33:45,555 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:45,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states and 7215 transitions. [2021-06-01 17:33:45,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:45,557 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:45,557 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:45,557 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317 [2021-06-01 17:33:45,557 INFO L430 AbstractCegarLoop]: === Iteration 319 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:45,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:45,558 INFO L82 PathProgramCache]: Analyzing trace with hash -979736487, now seen corresponding path program 315 times [2021-06-01 17:33:45,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:45,558 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857350156] [2021-06-01 17:33:45,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:45,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:45,635 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:45,635 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857350156] [2021-06-01 17:33:45,635 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857350156] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:45,635 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:45,635 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:45,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964627314] [2021-06-01 17:33:45,635 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:45,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:45,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:45,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:45,636 INFO L87 Difference]: Start difference. First operand 1781 states and 7215 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:45,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:45,691 INFO L93 Difference]: Finished difference Result 3640 states and 13801 transitions. [2021-06-01 17:33:45,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:45,691 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:45,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:45,698 INFO L225 Difference]: With dead ends: 3640 [2021-06-01 17:33:45,698 INFO L226 Difference]: Without dead ends: 3393 [2021-06-01 17:33:45,698 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:45,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3393 states. [2021-06-01 17:33:45,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3393 to 1797. [2021-06-01 17:33:45,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1797 states, 1796 states have (on average 4.043986636971047) internal successors, (7263), 1796 states have internal predecessors, (7263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:45,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 7263 transitions. [2021-06-01 17:33:45,741 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 7263 transitions. Word has length 25 [2021-06-01 17:33:45,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:45,741 INFO L482 AbstractCegarLoop]: Abstraction has 1797 states and 7263 transitions. [2021-06-01 17:33:45,741 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:45,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 7263 transitions. [2021-06-01 17:33:45,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:45,743 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:45,743 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:45,743 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable318 [2021-06-01 17:33:45,743 INFO L430 AbstractCegarLoop]: === Iteration 320 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:45,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:45,744 INFO L82 PathProgramCache]: Analyzing trace with hash 700760153, now seen corresponding path program 316 times [2021-06-01 17:33:45,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:45,744 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422859617] [2021-06-01 17:33:45,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:45,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:45,821 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:45,821 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422859617] [2021-06-01 17:33:45,821 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422859617] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:45,821 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:45,821 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:45,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781060243] [2021-06-01 17:33:45,822 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:45,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:45,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:45,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:45,822 INFO L87 Difference]: Start difference. First operand 1797 states and 7263 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:45,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:45,890 INFO L93 Difference]: Finished difference Result 3640 states and 13785 transitions. [2021-06-01 17:33:45,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:45,891 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:45,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:45,897 INFO L225 Difference]: With dead ends: 3640 [2021-06-01 17:33:45,898 INFO L226 Difference]: Without dead ends: 3377 [2021-06-01 17:33:45,898 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:45,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3377 states. [2021-06-01 17:33:45,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3377 to 1781. [2021-06-01 17:33:45,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1781 states, 1780 states have (on average 4.048876404494382) internal successors, (7207), 1780 states have internal predecessors, (7207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:45,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1781 states to 1781 states and 7207 transitions. [2021-06-01 17:33:45,957 INFO L78 Accepts]: Start accepts. Automaton has 1781 states and 7207 transitions. Word has length 25 [2021-06-01 17:33:45,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:45,958 INFO L482 AbstractCegarLoop]: Abstraction has 1781 states and 7207 transitions. [2021-06-01 17:33:45,958 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:45,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states and 7207 transitions. [2021-06-01 17:33:45,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:45,960 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:45,960 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:45,960 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319 [2021-06-01 17:33:45,960 INFO L430 AbstractCegarLoop]: === Iteration 321 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:45,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:45,961 INFO L82 PathProgramCache]: Analyzing trace with hash 437425467, now seen corresponding path program 317 times [2021-06-01 17:33:45,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:45,961 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484073719] [2021-06-01 17:33:45,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:45,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:46,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:46,033 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:46,033 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484073719] [2021-06-01 17:33:46,033 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484073719] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:46,033 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:46,034 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:46,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225709535] [2021-06-01 17:33:46,034 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:46,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:46,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:46,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:46,034 INFO L87 Difference]: Start difference. First operand 1781 states and 7207 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:46,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:46,097 INFO L93 Difference]: Finished difference Result 3728 states and 14151 transitions. [2021-06-01 17:33:46,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:46,098 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:46,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:46,104 INFO L225 Difference]: With dead ends: 3728 [2021-06-01 17:33:46,105 INFO L226 Difference]: Without dead ends: 3443 [2021-06-01 17:33:46,105 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:46,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3443 states. [2021-06-01 17:33:46,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3443 to 1809. [2021-06-01 17:33:46,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 4.034845132743363) internal successors, (7295), 1808 states have internal predecessors, (7295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:46,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 7295 transitions. [2021-06-01 17:33:46,148 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 7295 transitions. Word has length 25 [2021-06-01 17:33:46,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:46,148 INFO L482 AbstractCegarLoop]: Abstraction has 1809 states and 7295 transitions. [2021-06-01 17:33:46,148 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:46,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 7295 transitions. [2021-06-01 17:33:46,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:46,150 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:46,150 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:46,150 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable320 [2021-06-01 17:33:46,150 INFO L430 AbstractCegarLoop]: === Iteration 322 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:46,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:46,151 INFO L82 PathProgramCache]: Analyzing trace with hash -954719079, now seen corresponding path program 318 times [2021-06-01 17:33:46,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:46,151 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358794343] [2021-06-01 17:33:46,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:46,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:46,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:46,224 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:46,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358794343] [2021-06-01 17:33:46,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358794343] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:46,224 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:46,224 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:46,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632313769] [2021-06-01 17:33:46,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:46,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:46,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:46,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:46,225 INFO L87 Difference]: Start difference. First operand 1809 states and 7295 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:46,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:46,293 INFO L93 Difference]: Finished difference Result 3690 states and 13970 transitions. [2021-06-01 17:33:46,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:46,293 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:46,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:46,300 INFO L225 Difference]: With dead ends: 3690 [2021-06-01 17:33:46,300 INFO L226 Difference]: Without dead ends: 3407 [2021-06-01 17:33:46,300 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:46,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3407 states. [2021-06-01 17:33:46,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3407 to 1773. [2021-06-01 17:33:46,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1773 states, 1772 states have (on average 4.053611738148984) internal successors, (7183), 1772 states have internal predecessors, (7183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:46,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1773 states to 1773 states and 7183 transitions. [2021-06-01 17:33:46,343 INFO L78 Accepts]: Start accepts. Automaton has 1773 states and 7183 transitions. Word has length 25 [2021-06-01 17:33:46,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:46,343 INFO L482 AbstractCegarLoop]: Abstraction has 1773 states and 7183 transitions. [2021-06-01 17:33:46,343 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:46,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1773 states and 7183 transitions. [2021-06-01 17:33:46,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:46,345 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:46,345 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:46,345 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable321 [2021-06-01 17:33:46,345 INFO L430 AbstractCegarLoop]: === Iteration 323 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:46,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:46,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1253830567, now seen corresponding path program 319 times [2021-06-01 17:33:46,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:46,346 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392846271] [2021-06-01 17:33:46,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:46,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:46,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:46,445 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:46,445 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392846271] [2021-06-01 17:33:46,445 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392846271] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:46,445 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:46,445 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:46,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965559917] [2021-06-01 17:33:46,446 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:46,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:46,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:46,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:46,446 INFO L87 Difference]: Start difference. First operand 1773 states and 7183 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:46,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:46,503 INFO L93 Difference]: Finished difference Result 3686 states and 14006 transitions. [2021-06-01 17:33:46,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:46,504 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:46,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:46,510 INFO L225 Difference]: With dead ends: 3686 [2021-06-01 17:33:46,511 INFO L226 Difference]: Without dead ends: 3439 [2021-06-01 17:33:46,511 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:46,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3439 states. [2021-06-01 17:33:46,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3439 to 1813. [2021-06-01 17:33:46,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 1812 states have (on average 4.043598233995585) internal successors, (7327), 1812 states have internal predecessors, (7327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:46,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 7327 transitions. [2021-06-01 17:33:46,554 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 7327 transitions. Word has length 25 [2021-06-01 17:33:46,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:46,554 INFO L482 AbstractCegarLoop]: Abstraction has 1813 states and 7327 transitions. [2021-06-01 17:33:46,554 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:46,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 7327 transitions. [2021-06-01 17:33:46,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:46,556 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:46,556 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:46,556 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable322 [2021-06-01 17:33:46,556 INFO L430 AbstractCegarLoop]: === Iteration 324 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:46,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:46,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1451201979, now seen corresponding path program 320 times [2021-06-01 17:33:46,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:46,557 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618569678] [2021-06-01 17:33:46,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:46,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:46,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:46,646 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:46,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618569678] [2021-06-01 17:33:46,646 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618569678] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:46,646 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:46,646 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:46,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243253338] [2021-06-01 17:33:46,646 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:46,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:46,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:46,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:46,646 INFO L87 Difference]: Start difference. First operand 1813 states and 7327 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:46,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:46,721 INFO L93 Difference]: Finished difference Result 3724 states and 14131 transitions. [2021-06-01 17:33:46,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:46,722 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:46,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:46,728 INFO L225 Difference]: With dead ends: 3724 [2021-06-01 17:33:46,728 INFO L226 Difference]: Without dead ends: 3411 [2021-06-01 17:33:46,729 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:46,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3411 states. [2021-06-01 17:33:46,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3411 to 1785. [2021-06-01 17:33:46,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1784 states have (on average 4.051008968609866) internal successors, (7227), 1784 states have internal predecessors, (7227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:46,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 7227 transitions. [2021-06-01 17:33:46,771 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 7227 transitions. Word has length 25 [2021-06-01 17:33:46,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:46,771 INFO L482 AbstractCegarLoop]: Abstraction has 1785 states and 7227 transitions. [2021-06-01 17:33:46,772 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:46,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 7227 transitions. [2021-06-01 17:33:46,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:46,774 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:46,774 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:46,774 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable323 [2021-06-01 17:33:46,774 INFO L430 AbstractCegarLoop]: === Iteration 325 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:46,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:46,774 INFO L82 PathProgramCache]: Analyzing trace with hash 65019865, now seen corresponding path program 321 times [2021-06-01 17:33:46,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:46,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412544679] [2021-06-01 17:33:46,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:46,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:46,859 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:46,859 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412544679] [2021-06-01 17:33:46,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412544679] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:46,859 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:46,859 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:46,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013337678] [2021-06-01 17:33:46,859 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:46,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:46,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:46,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:46,860 INFO L87 Difference]: Start difference. First operand 1785 states and 7227 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:46,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:46,922 INFO L93 Difference]: Finished difference Result 3604 states and 13693 transitions. [2021-06-01 17:33:46,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:46,922 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:46,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:46,929 INFO L225 Difference]: With dead ends: 3604 [2021-06-01 17:33:46,929 INFO L226 Difference]: Without dead ends: 3357 [2021-06-01 17:33:46,929 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:46,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3357 states. [2021-06-01 17:33:46,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3357 to 1809. [2021-06-01 17:33:46,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 4.039269911504425) internal successors, (7303), 1808 states have internal predecessors, (7303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:46,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 7303 transitions. [2021-06-01 17:33:46,972 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 7303 transitions. Word has length 25 [2021-06-01 17:33:46,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:46,972 INFO L482 AbstractCegarLoop]: Abstraction has 1809 states and 7303 transitions. [2021-06-01 17:33:46,972 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:46,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 7303 transitions. [2021-06-01 17:33:46,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:46,975 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:46,975 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:46,975 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable324 [2021-06-01 17:33:46,975 INFO L430 AbstractCegarLoop]: === Iteration 326 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:46,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:46,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1877252135, now seen corresponding path program 322 times [2021-06-01 17:33:46,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:46,975 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486216096] [2021-06-01 17:33:46,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:47,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:47,058 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:47,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486216096] [2021-06-01 17:33:47,058 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486216096] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:47,058 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:47,058 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:47,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418006547] [2021-06-01 17:33:47,058 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:47,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:47,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:47,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:47,058 INFO L87 Difference]: Start difference. First operand 1809 states and 7303 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:47,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:47,133 INFO L93 Difference]: Finished difference Result 3428 states and 13116 transitions. [2021-06-01 17:33:47,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:47,134 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:47,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:47,140 INFO L225 Difference]: With dead ends: 3428 [2021-06-01 17:33:47,140 INFO L226 Difference]: Without dead ends: 3141 [2021-06-01 17:33:47,140 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:47,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3141 states. [2021-06-01 17:33:47,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3141 to 1785. [2021-06-01 17:33:47,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1784 states have (on average 4.0442825112107625) internal successors, (7215), 1784 states have internal predecessors, (7215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:47,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 7215 transitions. [2021-06-01 17:33:47,183 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 7215 transitions. Word has length 25 [2021-06-01 17:33:47,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:47,184 INFO L482 AbstractCegarLoop]: Abstraction has 1785 states and 7215 transitions. [2021-06-01 17:33:47,184 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:47,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 7215 transitions. [2021-06-01 17:33:47,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:47,186 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:47,186 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:47,186 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable325 [2021-06-01 17:33:47,186 INFO L430 AbstractCegarLoop]: === Iteration 327 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:47,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:47,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1482181819, now seen corresponding path program 323 times [2021-06-01 17:33:47,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:47,187 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130784440] [2021-06-01 17:33:47,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:47,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:47,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:47,279 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:47,279 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130784440] [2021-06-01 17:33:47,279 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130784440] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:47,279 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:47,279 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:47,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725836592] [2021-06-01 17:33:47,279 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:47,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:47,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:47,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:47,280 INFO L87 Difference]: Start difference. First operand 1785 states and 7215 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:47,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:47,353 INFO L93 Difference]: Finished difference Result 3654 states and 13890 transitions. [2021-06-01 17:33:47,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:47,354 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:47,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:47,360 INFO L225 Difference]: With dead ends: 3654 [2021-06-01 17:33:47,361 INFO L226 Difference]: Without dead ends: 3369 [2021-06-01 17:33:47,361 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:47,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3369 states. [2021-06-01 17:33:47,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3369 to 1821. [2021-06-01 17:33:47,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1821 states, 1820 states have (on average 4.03021978021978) internal successors, (7335), 1820 states have internal predecessors, (7335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:47,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 7335 transitions. [2021-06-01 17:33:47,403 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 7335 transitions. Word has length 25 [2021-06-01 17:33:47,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:47,403 INFO L482 AbstractCegarLoop]: Abstraction has 1821 states and 7335 transitions. [2021-06-01 17:33:47,403 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:47,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 7335 transitions. [2021-06-01 17:33:47,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:47,406 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:47,406 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:47,406 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable326 [2021-06-01 17:33:47,406 INFO L430 AbstractCegarLoop]: === Iteration 328 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:47,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:47,406 INFO L82 PathProgramCache]: Analyzing trace with hash 741229721, now seen corresponding path program 324 times [2021-06-01 17:33:47,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:47,406 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516594929] [2021-06-01 17:33:47,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:47,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:47,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:47,505 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:47,505 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516594929] [2021-06-01 17:33:47,505 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516594929] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:47,505 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:47,505 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:47,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230578990] [2021-06-01 17:33:47,505 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:47,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:47,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:47,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:47,505 INFO L87 Difference]: Start difference. First operand 1821 states and 7335 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:47,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:47,579 INFO L93 Difference]: Finished difference Result 3440 states and 13148 transitions. [2021-06-01 17:33:47,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:47,580 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:47,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:47,586 INFO L225 Difference]: With dead ends: 3440 [2021-06-01 17:33:47,586 INFO L226 Difference]: Without dead ends: 3129 [2021-06-01 17:33:47,586 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:47,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2021-06-01 17:33:47,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 1773. [2021-06-01 17:33:47,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1773 states, 1772 states have (on average 4.051354401805869) internal successors, (7179), 1772 states have internal predecessors, (7179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:47,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1773 states to 1773 states and 7179 transitions. [2021-06-01 17:33:47,627 INFO L78 Accepts]: Start accepts. Automaton has 1773 states and 7179 transitions. Word has length 25 [2021-06-01 17:33:47,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:47,627 INFO L482 AbstractCegarLoop]: Abstraction has 1773 states and 7179 transitions. [2021-06-01 17:33:47,627 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:47,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1773 states and 7179 transitions. [2021-06-01 17:33:47,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:47,629 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:47,629 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:47,629 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable327 [2021-06-01 17:33:47,630 INFO L430 AbstractCegarLoop]: === Iteration 329 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:47,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:47,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1448213435, now seen corresponding path program 325 times [2021-06-01 17:33:47,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:47,630 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420196041] [2021-06-01 17:33:47,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:47,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:47,717 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:47,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420196041] [2021-06-01 17:33:47,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420196041] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:47,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:47,717 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:47,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055433988] [2021-06-01 17:33:47,717 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:47,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:47,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:47,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:47,717 INFO L87 Difference]: Start difference. First operand 1773 states and 7179 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:47,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:47,777 INFO L93 Difference]: Finished difference Result 3526 states and 13364 transitions. [2021-06-01 17:33:47,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:47,777 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:47,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:47,784 INFO L225 Difference]: With dead ends: 3526 [2021-06-01 17:33:47,784 INFO L226 Difference]: Without dead ends: 3279 [2021-06-01 17:33:47,785 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:47,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3279 states. [2021-06-01 17:33:47,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3279 to 1797. [2021-06-01 17:33:47,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1797 states, 1796 states have (on average 4.043986636971047) internal successors, (7263), 1796 states have internal predecessors, (7263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:47,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 7263 transitions. [2021-06-01 17:33:47,828 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 7263 transitions. Word has length 25 [2021-06-01 17:33:47,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:47,828 INFO L482 AbstractCegarLoop]: Abstraction has 1797 states and 7263 transitions. [2021-06-01 17:33:47,828 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:47,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 7263 transitions. [2021-06-01 17:33:47,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:47,831 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:47,831 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:47,831 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable328 [2021-06-01 17:33:47,831 INFO L430 AbstractCegarLoop]: === Iteration 330 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:47,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:47,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1166257221, now seen corresponding path program 326 times [2021-06-01 17:33:47,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:47,831 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653866535] [2021-06-01 17:33:47,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:47,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:47,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:47,909 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:47,910 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653866535] [2021-06-01 17:33:47,910 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653866535] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:47,910 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:47,910 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:47,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368389993] [2021-06-01 17:33:47,910 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:47,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:47,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:47,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:47,910 INFO L87 Difference]: Start difference. First operand 1797 states and 7263 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:47,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:47,983 INFO L93 Difference]: Finished difference Result 3526 states and 13348 transitions. [2021-06-01 17:33:47,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:47,983 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:47,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:47,990 INFO L225 Difference]: With dead ends: 3526 [2021-06-01 17:33:47,990 INFO L226 Difference]: Without dead ends: 3263 [2021-06-01 17:33:47,990 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:48,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3263 states. [2021-06-01 17:33:48,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3263 to 1781. [2021-06-01 17:33:48,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1781 states, 1780 states have (on average 4.048876404494382) internal successors, (7207), 1780 states have internal predecessors, (7207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:48,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1781 states to 1781 states and 7207 transitions. [2021-06-01 17:33:48,033 INFO L78 Accepts]: Start accepts. Automaton has 1781 states and 7207 transitions. Word has length 25 [2021-06-01 17:33:48,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:48,034 INFO L482 AbstractCegarLoop]: Abstraction has 1781 states and 7207 transitions. [2021-06-01 17:33:48,034 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:48,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states and 7207 transitions. [2021-06-01 17:33:48,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:48,036 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:48,036 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:48,036 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329 [2021-06-01 17:33:48,037 INFO L430 AbstractCegarLoop]: === Iteration 331 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:48,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:48,037 INFO L82 PathProgramCache]: Analyzing trace with hash 601416473, now seen corresponding path program 327 times [2021-06-01 17:33:48,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:48,037 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207843296] [2021-06-01 17:33:48,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:48,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:48,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:48,114 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:48,114 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207843296] [2021-06-01 17:33:48,114 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207843296] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:48,114 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:48,114 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:48,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949587830] [2021-06-01 17:33:48,114 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:48,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:48,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:48,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:48,114 INFO L87 Difference]: Start difference. First operand 1781 states and 7207 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:48,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:48,175 INFO L93 Difference]: Finished difference Result 3470 states and 13160 transitions. [2021-06-01 17:33:48,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:48,176 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:48,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:48,182 INFO L225 Difference]: With dead ends: 3470 [2021-06-01 17:33:48,182 INFO L226 Difference]: Without dead ends: 3223 [2021-06-01 17:33:48,182 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:48,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3223 states. [2021-06-01 17:33:48,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3223 to 1805. [2021-06-01 17:33:48,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1805 states, 1804 states have (on average 4.037139689578714) internal successors, (7283), 1804 states have internal predecessors, (7283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:48,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1805 states to 1805 states and 7283 transitions. [2021-06-01 17:33:48,224 INFO L78 Accepts]: Start accepts. Automaton has 1805 states and 7283 transitions. Word has length 25 [2021-06-01 17:33:48,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:48,224 INFO L482 AbstractCegarLoop]: Abstraction has 1805 states and 7283 transitions. [2021-06-01 17:33:48,224 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:48,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1805 states and 7283 transitions. [2021-06-01 17:33:48,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:48,226 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:48,226 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:48,226 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable330 [2021-06-01 17:33:48,226 INFO L430 AbstractCegarLoop]: === Iteration 332 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:48,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:48,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1243755451, now seen corresponding path program 328 times [2021-06-01 17:33:48,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:48,227 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021821716] [2021-06-01 17:33:48,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:48,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:48,302 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:48,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021821716] [2021-06-01 17:33:48,302 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021821716] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:48,302 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:48,302 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:48,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278327423] [2021-06-01 17:33:48,303 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:48,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:48,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:48,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:48,303 INFO L87 Difference]: Start difference. First operand 1805 states and 7283 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:48,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:48,381 INFO L93 Difference]: Finished difference Result 3294 states and 12583 transitions. [2021-06-01 17:33:48,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:48,381 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:48,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:48,388 INFO L225 Difference]: With dead ends: 3294 [2021-06-01 17:33:48,389 INFO L226 Difference]: Without dead ends: 3007 [2021-06-01 17:33:48,389 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:48,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3007 states. [2021-06-01 17:33:48,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3007 to 1781. [2021-06-01 17:33:48,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1781 states, 1780 states have (on average 4.04438202247191) internal successors, (7199), 1780 states have internal predecessors, (7199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:48,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1781 states to 1781 states and 7199 transitions. [2021-06-01 17:33:48,440 INFO L78 Accepts]: Start accepts. Automaton has 1781 states and 7199 transitions. Word has length 25 [2021-06-01 17:33:48,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:48,440 INFO L482 AbstractCegarLoop]: Abstraction has 1781 states and 7199 transitions. [2021-06-01 17:33:48,440 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:48,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states and 7199 transitions. [2021-06-01 17:33:48,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:48,443 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:48,444 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:48,444 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable331 [2021-06-01 17:33:48,444 INFO L430 AbstractCegarLoop]: === Iteration 333 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:48,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:48,444 INFO L82 PathProgramCache]: Analyzing trace with hash 621124539, now seen corresponding path program 329 times [2021-06-01 17:33:48,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:48,444 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539727586] [2021-06-01 17:33:48,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:48,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:48,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:48,529 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:48,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539727586] [2021-06-01 17:33:48,529 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539727586] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:48,529 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:48,529 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:48,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29918481] [2021-06-01 17:33:48,529 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:48,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:48,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:48,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:48,530 INFO L87 Difference]: Start difference. First operand 1781 states and 7199 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:48,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:48,598 INFO L93 Difference]: Finished difference Result 3278 states and 12527 transitions. [2021-06-01 17:33:48,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:48,598 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:48,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:48,604 INFO L225 Difference]: With dead ends: 3278 [2021-06-01 17:33:48,604 INFO L226 Difference]: Without dead ends: 3031 [2021-06-01 17:33:48,604 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:48,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3031 states. [2021-06-01 17:33:48,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3031 to 1805. [2021-06-01 17:33:48,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1805 states, 1804 states have (on average 4.03270509977827) internal successors, (7275), 1804 states have internal predecessors, (7275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:48,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1805 states to 1805 states and 7275 transitions. [2021-06-01 17:33:48,644 INFO L78 Accepts]: Start accepts. Automaton has 1805 states and 7275 transitions. Word has length 25 [2021-06-01 17:33:48,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:48,645 INFO L482 AbstractCegarLoop]: Abstraction has 1805 states and 7275 transitions. [2021-06-01 17:33:48,645 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:48,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1805 states and 7275 transitions. [2021-06-01 17:33:48,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:48,647 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:48,647 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:48,647 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable332 [2021-06-01 17:33:48,647 INFO L430 AbstractCegarLoop]: === Iteration 334 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:48,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:48,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1422212455, now seen corresponding path program 330 times [2021-06-01 17:33:48,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:48,647 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666365517] [2021-06-01 17:33:48,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:48,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:48,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:48,737 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:48,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666365517] [2021-06-01 17:33:48,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666365517] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:48,737 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:48,737 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:48,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747113807] [2021-06-01 17:33:48,737 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:48,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:48,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:48,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:48,738 INFO L87 Difference]: Start difference. First operand 1805 states and 7275 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:48,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:48,809 INFO L93 Difference]: Finished difference Result 3030 states and 11674 transitions. [2021-06-01 17:33:48,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:48,810 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:48,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:48,815 INFO L225 Difference]: With dead ends: 3030 [2021-06-01 17:33:48,815 INFO L226 Difference]: Without dead ends: 2735 [2021-06-01 17:33:48,815 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:48,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2735 states. [2021-06-01 17:33:48,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2735 to 1773. [2021-06-01 17:33:48,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1773 states, 1772 states have (on average 4.049097065462754) internal successors, (7175), 1772 states have internal predecessors, (7175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:48,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1773 states to 1773 states and 7175 transitions. [2021-06-01 17:33:48,855 INFO L78 Accepts]: Start accepts. Automaton has 1773 states and 7175 transitions. Word has length 25 [2021-06-01 17:33:48,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:48,855 INFO L482 AbstractCegarLoop]: Abstraction has 1773 states and 7175 transitions. [2021-06-01 17:33:48,855 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:48,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1773 states and 7175 transitions. [2021-06-01 17:33:48,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:48,858 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:48,858 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:48,858 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable333 [2021-06-01 17:33:48,858 INFO L430 AbstractCegarLoop]: === Iteration 335 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:48,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:48,858 INFO L82 PathProgramCache]: Analyzing trace with hash -2122649571, now seen corresponding path program 331 times [2021-06-01 17:33:48,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:48,858 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648732099] [2021-06-01 17:33:48,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:48,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:48,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:48,931 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:48,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648732099] [2021-06-01 17:33:48,931 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648732099] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:48,931 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:48,931 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:48,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586452348] [2021-06-01 17:33:48,931 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:48,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:48,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:48,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:48,932 INFO L87 Difference]: Start difference. First operand 1773 states and 7175 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:48,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:48,994 INFO L93 Difference]: Finished difference Result 3630 states and 13794 transitions. [2021-06-01 17:33:48,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:48,994 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:48,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:49,001 INFO L225 Difference]: With dead ends: 3630 [2021-06-01 17:33:49,001 INFO L226 Difference]: Without dead ends: 3345 [2021-06-01 17:33:49,001 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:49,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3345 states. [2021-06-01 17:33:49,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3345 to 1813. [2021-06-01 17:33:49,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 1812 states have (on average 4.039183222958058) internal successors, (7319), 1812 states have internal predecessors, (7319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:49,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 7319 transitions. [2021-06-01 17:33:49,044 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 7319 transitions. Word has length 25 [2021-06-01 17:33:49,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:49,045 INFO L482 AbstractCegarLoop]: Abstraction has 1813 states and 7319 transitions. [2021-06-01 17:33:49,045 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:49,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 7319 transitions. [2021-06-01 17:33:49,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:49,047 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:49,047 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:49,047 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable334 [2021-06-01 17:33:49,047 INFO L430 AbstractCegarLoop]: === Iteration 336 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:49,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:49,047 INFO L82 PathProgramCache]: Analyzing trace with hash 780173179, now seen corresponding path program 332 times [2021-06-01 17:33:49,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:49,048 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271343970] [2021-06-01 17:33:49,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:49,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:49,121 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:49,121 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271343970] [2021-06-01 17:33:49,121 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271343970] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:49,121 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:49,121 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:49,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105615199] [2021-06-01 17:33:49,121 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:49,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:49,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:49,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:49,122 INFO L87 Difference]: Start difference. First operand 1813 states and 7319 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:49,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:49,188 INFO L93 Difference]: Finished difference Result 3592 states and 13613 transitions. [2021-06-01 17:33:49,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:49,188 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:49,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:49,194 INFO L225 Difference]: With dead ends: 3592 [2021-06-01 17:33:49,195 INFO L226 Difference]: Without dead ends: 3317 [2021-06-01 17:33:49,195 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:49,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3317 states. [2021-06-01 17:33:49,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3317 to 1785. [2021-06-01 17:33:49,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1784 states have (on average 4.04652466367713) internal successors, (7219), 1784 states have internal predecessors, (7219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:49,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 7219 transitions. [2021-06-01 17:33:49,236 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 7219 transitions. Word has length 25 [2021-06-01 17:33:49,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:49,237 INFO L482 AbstractCegarLoop]: Abstraction has 1785 states and 7219 transitions. [2021-06-01 17:33:49,237 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:49,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 7219 transitions. [2021-06-01 17:33:49,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:49,239 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:49,239 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:49,239 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable335 [2021-06-01 17:33:49,239 INFO L430 AbstractCegarLoop]: === Iteration 337 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:49,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:49,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1325520763, now seen corresponding path program 333 times [2021-06-01 17:33:49,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:49,239 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967902030] [2021-06-01 17:33:49,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:49,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:49,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:49,323 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:49,323 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967902030] [2021-06-01 17:33:49,323 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967902030] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:49,323 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:49,323 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:49,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799752988] [2021-06-01 17:33:49,323 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:49,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:49,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:49,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:49,323 INFO L87 Difference]: Start difference. First operand 1785 states and 7219 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:49,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:49,386 INFO L93 Difference]: Finished difference Result 3524 states and 13381 transitions. [2021-06-01 17:33:49,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:49,386 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:49,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:49,393 INFO L225 Difference]: With dead ends: 3524 [2021-06-01 17:33:49,393 INFO L226 Difference]: Without dead ends: 3239 [2021-06-01 17:33:49,393 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:49,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3239 states. [2021-06-01 17:33:49,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3239 to 1821. [2021-06-01 17:33:49,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1821 states, 1820 states have (on average 4.032417582417582) internal successors, (7339), 1820 states have internal predecessors, (7339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:49,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 7339 transitions. [2021-06-01 17:33:49,435 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 7339 transitions. Word has length 25 [2021-06-01 17:33:49,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:49,435 INFO L482 AbstractCegarLoop]: Abstraction has 1821 states and 7339 transitions. [2021-06-01 17:33:49,435 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:49,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 7339 transitions. [2021-06-01 17:33:49,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:49,437 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:49,437 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:49,437 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable336 [2021-06-01 17:33:49,437 INFO L430 AbstractCegarLoop]: === Iteration 338 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:49,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:49,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1125787653, now seen corresponding path program 334 times [2021-06-01 17:33:49,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:49,438 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071733849] [2021-06-01 17:33:49,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:49,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:49,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:49,523 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:49,523 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071733849] [2021-06-01 17:33:49,523 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071733849] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:49,523 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:49,523 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:49,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953015678] [2021-06-01 17:33:49,523 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:49,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:49,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:49,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:49,523 INFO L87 Difference]: Start difference. First operand 1821 states and 7339 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:49,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:49,586 INFO L93 Difference]: Finished difference Result 3310 states and 12639 transitions. [2021-06-01 17:33:49,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:49,587 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:49,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:49,592 INFO L225 Difference]: With dead ends: 3310 [2021-06-01 17:33:49,593 INFO L226 Difference]: Without dead ends: 3011 [2021-06-01 17:33:49,593 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:49,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3011 states. [2021-06-01 17:33:49,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3011 to 1785. [2021-06-01 17:33:49,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1784 states have (on average 4.039798206278027) internal successors, (7207), 1784 states have internal predecessors, (7207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:49,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 7207 transitions. [2021-06-01 17:33:49,633 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 7207 transitions. Word has length 25 [2021-06-01 17:33:49,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:49,633 INFO L482 AbstractCegarLoop]: Abstraction has 1785 states and 7207 transitions. [2021-06-01 17:33:49,633 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:49,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 7207 transitions. [2021-06-01 17:33:49,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:49,635 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:49,635 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:49,635 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable337 [2021-06-01 17:33:49,635 INFO L430 AbstractCegarLoop]: === Iteration 339 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:49,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:49,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1689778137, now seen corresponding path program 335 times [2021-06-01 17:33:49,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:49,636 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760809385] [2021-06-01 17:33:49,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:49,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:49,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:49,711 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:49,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760809385] [2021-06-01 17:33:49,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760809385] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:49,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:49,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:49,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144473628] [2021-06-01 17:33:49,712 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:49,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:49,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:49,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:49,712 INFO L87 Difference]: Start difference. First operand 1785 states and 7207 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:49,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:49,772 INFO L93 Difference]: Finished difference Result 3282 states and 12535 transitions. [2021-06-01 17:33:49,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:49,772 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:49,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:49,778 INFO L225 Difference]: With dead ends: 3282 [2021-06-01 17:33:49,778 INFO L226 Difference]: Without dead ends: 3035 [2021-06-01 17:33:49,778 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:49,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3035 states. [2021-06-01 17:33:49,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3035 to 1809. [2021-06-01 17:33:49,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 4.02820796460177) internal successors, (7283), 1808 states have internal predecessors, (7283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:49,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 7283 transitions. [2021-06-01 17:33:49,819 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 7283 transitions. Word has length 25 [2021-06-01 17:33:49,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:49,819 INFO L482 AbstractCegarLoop]: Abstraction has 1809 states and 7283 transitions. [2021-06-01 17:33:49,819 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:49,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 7283 transitions. [2021-06-01 17:33:49,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:49,822 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:49,822 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:49,822 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable338 [2021-06-01 17:33:49,822 INFO L430 AbstractCegarLoop]: === Iteration 340 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:49,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:49,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1524126533, now seen corresponding path program 336 times [2021-06-01 17:33:49,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:49,822 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962611627] [2021-06-01 17:33:49,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:49,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:49,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:49,917 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:49,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962611627] [2021-06-01 17:33:49,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962611627] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:49,917 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:49,917 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:49,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124625747] [2021-06-01 17:33:49,917 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:49,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:49,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:49,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:49,917 INFO L87 Difference]: Start difference. First operand 1809 states and 7283 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:49,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:49,978 INFO L93 Difference]: Finished difference Result 3034 states and 11682 transitions. [2021-06-01 17:33:49,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:49,978 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:49,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:49,983 INFO L225 Difference]: With dead ends: 3034 [2021-06-01 17:33:49,984 INFO L226 Difference]: Without dead ends: 2731 [2021-06-01 17:33:49,984 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:49,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2731 states. [2021-06-01 17:33:50,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2731 to 1769. [2021-06-01 17:33:50,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1769 states, 1768 states have (on average 4.052601809954751) internal successors, (7165), 1768 states have internal predecessors, (7165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:50,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1769 states to 1769 states and 7165 transitions. [2021-06-01 17:33:50,022 INFO L78 Accepts]: Start accepts. Automaton has 1769 states and 7165 transitions. Word has length 25 [2021-06-01 17:33:50,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:50,022 INFO L482 AbstractCegarLoop]: Abstraction has 1769 states and 7165 transitions. [2021-06-01 17:33:50,022 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:50,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1769 states and 7165 transitions. [2021-06-01 17:33:50,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:50,025 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:50,025 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:50,025 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable339 [2021-06-01 17:33:50,025 INFO L430 AbstractCegarLoop]: === Iteration 341 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:50,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:50,025 INFO L82 PathProgramCache]: Analyzing trace with hash 203920639, now seen corresponding path program 337 times [2021-06-01 17:33:50,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:50,025 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446769957] [2021-06-01 17:33:50,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:50,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:50,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:50,116 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:50,116 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446769957] [2021-06-01 17:33:50,116 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446769957] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:50,116 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:50,116 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:50,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334365874] [2021-06-01 17:33:50,116 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:50,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:50,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:50,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:50,116 INFO L87 Difference]: Start difference. First operand 1769 states and 7165 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:50,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:50,179 INFO L93 Difference]: Finished difference Result 4044 states and 15477 transitions. [2021-06-01 17:33:50,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:50,179 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:50,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:50,187 INFO L225 Difference]: With dead ends: 4044 [2021-06-01 17:33:50,187 INFO L226 Difference]: Without dead ends: 3759 [2021-06-01 17:33:50,187 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:50,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3759 states. [2021-06-01 17:33:50,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3759 to 1823. [2021-06-01 17:33:50,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1823 states, 1822 states have (on average 4.048298572996707) internal successors, (7376), 1822 states have internal predecessors, (7376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:50,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1823 states to 1823 states and 7376 transitions. [2021-06-01 17:33:50,233 INFO L78 Accepts]: Start accepts. Automaton has 1823 states and 7376 transitions. Word has length 25 [2021-06-01 17:33:50,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:50,233 INFO L482 AbstractCegarLoop]: Abstraction has 1823 states and 7376 transitions. [2021-06-01 17:33:50,234 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:50,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1823 states and 7376 transitions. [2021-06-01 17:33:50,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:50,236 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:50,236 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:50,236 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable340 [2021-06-01 17:33:50,236 INFO L430 AbstractCegarLoop]: === Iteration 342 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:50,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:50,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1188223907, now seen corresponding path program 338 times [2021-06-01 17:33:50,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:50,236 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097094730] [2021-06-01 17:33:50,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:50,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:50,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:50,311 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:50,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097094730] [2021-06-01 17:33:50,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097094730] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:50,311 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:50,311 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:50,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936158629] [2021-06-01 17:33:50,311 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:50,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:50,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:50,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:50,311 INFO L87 Difference]: Start difference. First operand 1823 states and 7376 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:50,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:50,374 INFO L93 Difference]: Finished difference Result 4006 states and 15296 transitions. [2021-06-01 17:33:50,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:50,375 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:50,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:50,382 INFO L225 Difference]: With dead ends: 4006 [2021-06-01 17:33:50,382 INFO L226 Difference]: Without dead ends: 3731 [2021-06-01 17:33:50,382 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:50,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3731 states. [2021-06-01 17:33:50,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3731 to 1795. [2021-06-01 17:33:50,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1794 states have (on average 4.055741360089186) internal successors, (7276), 1794 states have internal predecessors, (7276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:50,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 7276 transitions. [2021-06-01 17:33:50,428 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 7276 transitions. Word has length 25 [2021-06-01 17:33:50,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:50,428 INFO L482 AbstractCegarLoop]: Abstraction has 1795 states and 7276 transitions. [2021-06-01 17:33:50,428 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:50,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 7276 transitions. [2021-06-01 17:33:50,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:50,431 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:50,431 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:50,431 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable341 [2021-06-01 17:33:50,431 INFO L430 AbstractCegarLoop]: === Iteration 343 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:50,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:50,431 INFO L82 PathProgramCache]: Analyzing trace with hash -642876323, now seen corresponding path program 339 times [2021-06-01 17:33:50,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:50,431 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755207757] [2021-06-01 17:33:50,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:50,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:50,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:50,517 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:50,517 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755207757] [2021-06-01 17:33:50,517 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755207757] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:50,517 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:50,517 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:50,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797475946] [2021-06-01 17:33:50,517 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:50,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:50,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:50,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:50,518 INFO L87 Difference]: Start difference. First operand 1795 states and 7276 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:50,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:50,582 INFO L93 Difference]: Finished difference Result 4068 states and 15577 transitions. [2021-06-01 17:33:50,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:50,583 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:50,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:50,590 INFO L225 Difference]: With dead ends: 4068 [2021-06-01 17:33:50,590 INFO L226 Difference]: Without dead ends: 3783 [2021-06-01 17:33:50,591 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:50,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3783 states. [2021-06-01 17:33:50,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3783 to 1831. [2021-06-01 17:33:50,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1831 states, 1830 states have (on average 4.0415300546448085) internal successors, (7396), 1830 states have internal predecessors, (7396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:50,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 7396 transitions. [2021-06-01 17:33:50,637 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 7396 transitions. Word has length 25 [2021-06-01 17:33:50,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:50,637 INFO L482 AbstractCegarLoop]: Abstraction has 1831 states and 7396 transitions. [2021-06-01 17:33:50,637 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:50,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 7396 transitions. [2021-06-01 17:33:50,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:50,640 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:50,640 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:50,640 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable342 [2021-06-01 17:33:50,640 INFO L430 AbstractCegarLoop]: === Iteration 344 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:50,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:50,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1200782557, now seen corresponding path program 340 times [2021-06-01 17:33:50,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:50,640 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190741044] [2021-06-01 17:33:50,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:50,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:50,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:50,739 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:50,739 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190741044] [2021-06-01 17:33:50,739 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190741044] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:50,739 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:50,739 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:50,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379935018] [2021-06-01 17:33:50,739 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:50,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:50,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:50,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:50,740 INFO L87 Difference]: Start difference. First operand 1831 states and 7396 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:50,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:50,832 INFO L93 Difference]: Finished difference Result 4046 states and 15460 transitions. [2021-06-01 17:33:50,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:50,833 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:50,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:50,841 INFO L225 Difference]: With dead ends: 4046 [2021-06-01 17:33:50,841 INFO L226 Difference]: Without dead ends: 3747 [2021-06-01 17:33:50,841 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 125.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:50,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3747 states. [2021-06-01 17:33:50,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3747 to 1795. [2021-06-01 17:33:50,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1794 states have (on average 4.0490523968784835) internal successors, (7264), 1794 states have internal predecessors, (7264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:50,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 7264 transitions. [2021-06-01 17:33:50,886 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 7264 transitions. Word has length 25 [2021-06-01 17:33:50,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:50,886 INFO L482 AbstractCegarLoop]: Abstraction has 1795 states and 7264 transitions. [2021-06-01 17:33:50,886 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:50,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 7264 transitions. [2021-06-01 17:33:50,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:50,889 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:50,889 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:50,889 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable343 [2021-06-01 17:33:50,889 INFO L430 AbstractCegarLoop]: === Iteration 345 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:50,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:50,889 INFO L82 PathProgramCache]: Analyzing trace with hash -278618949, now seen corresponding path program 341 times [2021-06-01 17:33:50,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:50,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94593461] [2021-06-01 17:33:50,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:50,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:50,976 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:50,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94593461] [2021-06-01 17:33:50,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94593461] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:50,977 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:50,977 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:50,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896245424] [2021-06-01 17:33:50,977 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:50,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:50,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:50,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:50,977 INFO L87 Difference]: Start difference. First operand 1795 states and 7264 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:51,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:51,046 INFO L93 Difference]: Finished difference Result 3980 states and 15203 transitions. [2021-06-01 17:33:51,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:51,047 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:51,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:51,054 INFO L225 Difference]: With dead ends: 3980 [2021-06-01 17:33:51,054 INFO L226 Difference]: Without dead ends: 3733 [2021-06-01 17:33:51,055 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:51,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3733 states. [2021-06-01 17:33:51,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3733 to 1819. [2021-06-01 17:33:51,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1819 states, 1818 states have (on average 4.037403740374037) internal successors, (7340), 1818 states have internal predecessors, (7340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:51,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1819 states to 1819 states and 7340 transitions. [2021-06-01 17:33:51,101 INFO L78 Accepts]: Start accepts. Automaton has 1819 states and 7340 transitions. Word has length 25 [2021-06-01 17:33:51,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:51,101 INFO L482 AbstractCegarLoop]: Abstraction has 1819 states and 7340 transitions. [2021-06-01 17:33:51,101 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:51,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1819 states and 7340 transitions. [2021-06-01 17:33:51,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:51,104 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:51,104 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:51,104 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable344 [2021-06-01 17:33:51,104 INFO L430 AbstractCegarLoop]: === Iteration 346 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:51,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:51,104 INFO L82 PathProgramCache]: Analyzing trace with hash 802443677, now seen corresponding path program 342 times [2021-06-01 17:33:51,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:51,104 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356458491] [2021-06-01 17:33:51,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:51,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:51,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:51,179 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:51,179 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356458491] [2021-06-01 17:33:51,179 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356458491] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:51,179 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:51,179 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:51,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95066705] [2021-06-01 17:33:51,179 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:51,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:51,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:51,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:51,179 INFO L87 Difference]: Start difference. First operand 1819 states and 7340 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:51,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:51,244 INFO L93 Difference]: Finished difference Result 3996 states and 15251 transitions. [2021-06-01 17:33:51,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:51,245 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:51,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:51,252 INFO L225 Difference]: With dead ends: 3996 [2021-06-01 17:33:51,252 INFO L226 Difference]: Without dead ends: 3697 [2021-06-01 17:33:51,252 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:51,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3697 states. [2021-06-01 17:33:51,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3697 to 1783. [2021-06-01 17:33:51,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1783 states, 1782 states have (on average 4.054994388327722) internal successors, (7226), 1782 states have internal predecessors, (7226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:51,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 7226 transitions. [2021-06-01 17:33:51,298 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 7226 transitions. Word has length 25 [2021-06-01 17:33:51,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:51,298 INFO L482 AbstractCegarLoop]: Abstraction has 1783 states and 7226 transitions. [2021-06-01 17:33:51,298 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:51,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 7226 transitions. [2021-06-01 17:33:51,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:51,300 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:51,300 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:51,300 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable345 [2021-06-01 17:33:51,300 INFO L430 AbstractCegarLoop]: === Iteration 347 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:51,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:51,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1759434275, now seen corresponding path program 343 times [2021-06-01 17:33:51,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:51,301 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768446127] [2021-06-01 17:33:51,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:51,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:51,375 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:51,375 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768446127] [2021-06-01 17:33:51,375 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768446127] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:51,375 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:51,375 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:51,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023182927] [2021-06-01 17:33:51,375 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:51,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:51,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:51,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:51,375 INFO L87 Difference]: Start difference. First operand 1783 states and 7226 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:51,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:51,440 INFO L93 Difference]: Finished difference Result 4071 states and 15534 transitions. [2021-06-01 17:33:51,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:51,440 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:51,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:51,448 INFO L225 Difference]: With dead ends: 4071 [2021-06-01 17:33:51,448 INFO L226 Difference]: Without dead ends: 3786 [2021-06-01 17:33:51,448 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:51,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2021-06-01 17:33:51,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 1841. [2021-06-01 17:33:51,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 4.045108695652174) internal successors, (7443), 1840 states have internal predecessors, (7443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:51,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 7443 transitions. [2021-06-01 17:33:51,495 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 7443 transitions. Word has length 25 [2021-06-01 17:33:51,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:51,495 INFO L482 AbstractCegarLoop]: Abstraction has 1841 states and 7443 transitions. [2021-06-01 17:33:51,495 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:51,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 7443 transitions. [2021-06-01 17:33:51,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:51,497 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:51,497 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:51,498 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable346 [2021-06-01 17:33:51,498 INFO L430 AbstractCegarLoop]: === Iteration 348 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:51,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:51,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1143388475, now seen corresponding path program 344 times [2021-06-01 17:33:51,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:51,498 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490067445] [2021-06-01 17:33:51,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:51,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:51,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:51,571 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:51,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490067445] [2021-06-01 17:33:51,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490067445] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:51,572 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:51,572 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:51,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162518055] [2021-06-01 17:33:51,572 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:51,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:51,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:51,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:51,572 INFO L87 Difference]: Start difference. First operand 1841 states and 7443 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:51,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:51,640 INFO L93 Difference]: Finished difference Result 4033 states and 15353 transitions. [2021-06-01 17:33:51,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:51,640 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:51,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:51,648 INFO L225 Difference]: With dead ends: 4033 [2021-06-01 17:33:51,648 INFO L226 Difference]: Without dead ends: 3758 [2021-06-01 17:33:51,648 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:51,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3758 states. [2021-06-01 17:33:51,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3758 to 1813. [2021-06-01 17:33:51,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 1812 states have (on average 4.051324503311259) internal successors, (7341), 1812 states have internal predecessors, (7341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:51,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 7341 transitions. [2021-06-01 17:33:51,694 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 7341 transitions. Word has length 25 [2021-06-01 17:33:51,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:51,694 INFO L482 AbstractCegarLoop]: Abstraction has 1813 states and 7341 transitions. [2021-06-01 17:33:51,694 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:51,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 7341 transitions. [2021-06-01 17:33:51,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:51,696 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:51,696 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:51,696 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable347 [2021-06-01 17:33:51,696 INFO L430 AbstractCegarLoop]: === Iteration 349 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:51,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:51,696 INFO L82 PathProgramCache]: Analyzing trace with hash 628646365, now seen corresponding path program 345 times [2021-06-01 17:33:51,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:51,697 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243943712] [2021-06-01 17:33:51,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:51,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:51,785 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:51,785 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243943712] [2021-06-01 17:33:51,785 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243943712] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:51,785 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:51,785 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:51,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079621603] [2021-06-01 17:33:51,786 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:51,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:51,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:51,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:51,786 INFO L87 Difference]: Start difference. First operand 1813 states and 7341 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:51,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:51,856 INFO L93 Difference]: Finished difference Result 4193 states and 15985 transitions. [2021-06-01 17:33:51,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:51,857 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:51,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:51,864 INFO L225 Difference]: With dead ends: 4193 [2021-06-01 17:33:51,865 INFO L226 Difference]: Without dead ends: 3908 [2021-06-01 17:33:51,865 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:51,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3908 states. [2021-06-01 17:33:51,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3908 to 1892. [2021-06-01 17:33:51,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1892 states, 1891 states have (on average 4.023268112109995) internal successors, (7608), 1891 states have internal predecessors, (7608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:51,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 7608 transitions. [2021-06-01 17:33:51,912 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 7608 transitions. Word has length 25 [2021-06-01 17:33:51,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:51,912 INFO L482 AbstractCegarLoop]: Abstraction has 1892 states and 7608 transitions. [2021-06-01 17:33:51,912 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:51,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 7608 transitions. [2021-06-01 17:33:51,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:51,915 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:51,915 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:51,915 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable348 [2021-06-01 17:33:51,915 INFO L430 AbstractCegarLoop]: === Iteration 350 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:51,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:51,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1360728669, now seen corresponding path program 346 times [2021-06-01 17:33:51,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:51,915 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117569704] [2021-06-01 17:33:51,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:51,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:51,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:51,991 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:51,991 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117569704] [2021-06-01 17:33:51,991 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117569704] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:51,991 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:51,992 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:51,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839655540] [2021-06-01 17:33:51,992 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:51,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:51,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:51,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:51,992 INFO L87 Difference]: Start difference. First operand 1892 states and 7608 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:52,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:52,046 INFO L93 Difference]: Finished difference Result 4226 states and 16052 transitions. [2021-06-01 17:33:52,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:52,046 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:52,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:52,054 INFO L225 Difference]: With dead ends: 4226 [2021-06-01 17:33:52,054 INFO L226 Difference]: Without dead ends: 3829 [2021-06-01 17:33:52,055 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:52,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3829 states. [2021-06-01 17:33:52,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3829 to 1813. [2021-06-01 17:33:52,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 1812 states have (on average 4.03476821192053) internal successors, (7311), 1812 states have internal predecessors, (7311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:52,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 7311 transitions. [2021-06-01 17:33:52,106 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 7311 transitions. Word has length 25 [2021-06-01 17:33:52,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:52,106 INFO L482 AbstractCegarLoop]: Abstraction has 1813 states and 7311 transitions. [2021-06-01 17:33:52,106 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:52,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 7311 transitions. [2021-06-01 17:33:52,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:52,109 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:52,109 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:52,109 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable349 [2021-06-01 17:33:52,109 INFO L430 AbstractCegarLoop]: === Iteration 351 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:52,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:52,109 INFO L82 PathProgramCache]: Analyzing trace with hash 992903739, now seen corresponding path program 347 times [2021-06-01 17:33:52,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:52,109 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622585515] [2021-06-01 17:33:52,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:52,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:52,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:52,194 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:52,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622585515] [2021-06-01 17:33:52,194 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622585515] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:52,194 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:52,194 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:52,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515779647] [2021-06-01 17:33:52,194 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:52,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:52,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:52,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:52,194 INFO L87 Difference]: Start difference. First operand 1813 states and 7311 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:52,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:52,263 INFO L93 Difference]: Finished difference Result 4082 states and 15515 transitions. [2021-06-01 17:33:52,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:52,263 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:52,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:52,271 INFO L225 Difference]: With dead ends: 4082 [2021-06-01 17:33:52,271 INFO L226 Difference]: Without dead ends: 3835 [2021-06-01 17:33:52,271 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:52,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3835 states. [2021-06-01 17:33:52,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3835 to 1857. [2021-06-01 17:33:52,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1857 states, 1856 states have (on average 4.021012931034483) internal successors, (7463), 1856 states have internal predecessors, (7463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:52,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1857 states to 1857 states and 7463 transitions. [2021-06-01 17:33:52,317 INFO L78 Accepts]: Start accepts. Automaton has 1857 states and 7463 transitions. Word has length 25 [2021-06-01 17:33:52,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:52,317 INFO L482 AbstractCegarLoop]: Abstraction has 1857 states and 7463 transitions. [2021-06-01 17:33:52,317 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:52,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1857 states and 7463 transitions. [2021-06-01 17:33:52,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:52,320 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:52,320 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:52,320 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350 [2021-06-01 17:33:52,320 INFO L430 AbstractCegarLoop]: === Iteration 352 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:52,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:52,320 INFO L82 PathProgramCache]: Analyzing trace with hash -76615267, now seen corresponding path program 348 times [2021-06-01 17:33:52,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:52,320 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220542973] [2021-06-01 17:33:52,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:52,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:52,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:52,406 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:52,406 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220542973] [2021-06-01 17:33:52,406 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220542973] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:52,406 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:52,406 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:52,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860389323] [2021-06-01 17:33:52,406 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:52,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:52,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:52,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:52,406 INFO L87 Difference]: Start difference. First operand 1857 states and 7463 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:52,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:52,460 INFO L93 Difference]: Finished difference Result 4153 states and 15754 transitions. [2021-06-01 17:33:52,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:52,461 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:52,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:52,468 INFO L225 Difference]: With dead ends: 4153 [2021-06-01 17:33:52,468 INFO L226 Difference]: Without dead ends: 3761 [2021-06-01 17:33:52,469 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:52,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3761 states. [2021-06-01 17:33:52,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3761 to 1783. [2021-06-01 17:33:52,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1783 states, 1782 states have (on average 4.047138047138047) internal successors, (7212), 1782 states have internal predecessors, (7212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:52,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 7212 transitions. [2021-06-01 17:33:52,515 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 7212 transitions. Word has length 25 [2021-06-01 17:33:52,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:52,515 INFO L482 AbstractCegarLoop]: Abstraction has 1783 states and 7212 transitions. [2021-06-01 17:33:52,515 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:52,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 7212 transitions. [2021-06-01 17:33:52,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:52,517 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:52,517 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:52,517 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable351 [2021-06-01 17:33:52,517 INFO L430 AbstractCegarLoop]: === Iteration 353 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:52,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:52,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1678784955, now seen corresponding path program 349 times [2021-06-01 17:33:52,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:52,518 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608583181] [2021-06-01 17:33:52,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:52,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:52,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:52,610 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:52,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608583181] [2021-06-01 17:33:52,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608583181] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:52,611 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:52,611 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:52,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555067487] [2021-06-01 17:33:52,611 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:52,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:52,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:52,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:52,611 INFO L87 Difference]: Start difference. First operand 1783 states and 7212 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:52,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:52,676 INFO L93 Difference]: Finished difference Result 4097 states and 15655 transitions. [2021-06-01 17:33:52,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:52,677 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:52,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:52,684 INFO L225 Difference]: With dead ends: 4097 [2021-06-01 17:33:52,685 INFO L226 Difference]: Without dead ends: 3812 [2021-06-01 17:33:52,685 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:52,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3812 states. [2021-06-01 17:33:52,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3812 to 1853. [2021-06-01 17:33:52,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1853 states, 1852 states have (on average 4.040496760259179) internal successors, (7483), 1852 states have internal predecessors, (7483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:52,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1853 states to 1853 states and 7483 transitions. [2021-06-01 17:33:52,735 INFO L78 Accepts]: Start accepts. Automaton has 1853 states and 7483 transitions. Word has length 25 [2021-06-01 17:33:52,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:52,735 INFO L482 AbstractCegarLoop]: Abstraction has 1853 states and 7483 transitions. [2021-06-01 17:33:52,735 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:52,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1853 states and 7483 transitions. [2021-06-01 17:33:52,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:52,737 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:52,737 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:52,737 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable352 [2021-06-01 17:33:52,737 INFO L430 AbstractCegarLoop]: === Iteration 354 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:52,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:52,738 INFO L82 PathProgramCache]: Analyzing trace with hash -772523461, now seen corresponding path program 350 times [2021-06-01 17:33:52,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:52,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123148869] [2021-06-01 17:33:52,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:52,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:52,830 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:52,830 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123148869] [2021-06-01 17:33:52,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123148869] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:52,831 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:52,831 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:52,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688729745] [2021-06-01 17:33:52,831 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:52,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:52,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:52,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:52,831 INFO L87 Difference]: Start difference. First operand 1853 states and 7483 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:52,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:52,896 INFO L93 Difference]: Finished difference Result 4075 states and 15538 transitions. [2021-06-01 17:33:52,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:52,897 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:52,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:52,905 INFO L225 Difference]: With dead ends: 4075 [2021-06-01 17:33:52,905 INFO L226 Difference]: Without dead ends: 3776 [2021-06-01 17:33:52,905 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:52,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2021-06-01 17:33:52,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 1817. [2021-06-01 17:33:52,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1817 states, 1816 states have (on average 4.044603524229075) internal successors, (7345), 1816 states have internal predecessors, (7345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:52,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1817 states to 1817 states and 7345 transitions. [2021-06-01 17:33:52,951 INFO L78 Accepts]: Start accepts. Automaton has 1817 states and 7345 transitions. Word has length 25 [2021-06-01 17:33:52,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:52,951 INFO L482 AbstractCegarLoop]: Abstraction has 1817 states and 7345 transitions. [2021-06-01 17:33:52,951 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:52,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1817 states and 7345 transitions. [2021-06-01 17:33:52,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:52,954 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:52,954 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:52,954 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable353 [2021-06-01 17:33:52,954 INFO L430 AbstractCegarLoop]: === Iteration 355 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:52,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:52,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1061261597, now seen corresponding path program 351 times [2021-06-01 17:33:52,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:52,954 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758404547] [2021-06-01 17:33:52,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:53,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:53,048 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:53,048 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758404547] [2021-06-01 17:33:53,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758404547] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:53,048 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:53,048 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:53,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101857026] [2021-06-01 17:33:53,049 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:53,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:53,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:53,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:53,049 INFO L87 Difference]: Start difference. First operand 1817 states and 7345 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:53,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:53,135 INFO L93 Difference]: Finished difference Result 4116 states and 15676 transitions. [2021-06-01 17:33:53,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:53,135 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:53,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:53,143 INFO L225 Difference]: With dead ends: 4116 [2021-06-01 17:33:53,143 INFO L226 Difference]: Without dead ends: 3831 [2021-06-01 17:33:53,143 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:53,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3831 states. [2021-06-01 17:33:53,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3831 to 1896. [2021-06-01 17:33:53,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1896 states, 1895 states have (on average 4.0168865435356205) internal successors, (7612), 1895 states have internal predecessors, (7612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:53,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 7612 transitions. [2021-06-01 17:33:53,190 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 7612 transitions. Word has length 25 [2021-06-01 17:33:53,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:53,190 INFO L482 AbstractCegarLoop]: Abstraction has 1896 states and 7612 transitions. [2021-06-01 17:33:53,191 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:53,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 7612 transitions. [2021-06-01 17:33:53,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:53,193 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:53,193 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:53,193 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable354 [2021-06-01 17:33:53,193 INFO L430 AbstractCegarLoop]: === Iteration 356 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:53,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:53,194 INFO L82 PathProgramCache]: Analyzing trace with hash -662332869, now seen corresponding path program 352 times [2021-06-01 17:33:53,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:53,194 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546298718] [2021-06-01 17:33:53,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:53,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:53,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:53,277 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:53,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546298718] [2021-06-01 17:33:53,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546298718] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:53,277 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:53,277 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:53,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852286539] [2021-06-01 17:33:53,277 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:53,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:53,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:53,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:53,278 INFO L87 Difference]: Start difference. First operand 1896 states and 7612 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:53,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:53,329 INFO L93 Difference]: Finished difference Result 4149 states and 15743 transitions. [2021-06-01 17:33:53,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:53,330 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:53,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:53,338 INFO L225 Difference]: With dead ends: 4149 [2021-06-01 17:33:53,338 INFO L226 Difference]: Without dead ends: 3752 [2021-06-01 17:33:53,338 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:53,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3752 states. [2021-06-01 17:33:53,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3752 to 1817. [2021-06-01 17:33:53,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1817 states, 1816 states have (on average 4.025881057268722) internal successors, (7311), 1816 states have internal predecessors, (7311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:53,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1817 states to 1817 states and 7311 transitions. [2021-06-01 17:33:53,383 INFO L78 Accepts]: Start accepts. Automaton has 1817 states and 7311 transitions. Word has length 25 [2021-06-01 17:33:53,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:53,383 INFO L482 AbstractCegarLoop]: Abstraction has 1817 states and 7311 transitions. [2021-06-01 17:33:53,383 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:53,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1817 states and 7311 transitions. [2021-06-01 17:33:53,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:53,385 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:53,385 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:53,385 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable355 [2021-06-01 17:33:53,385 INFO L430 AbstractCegarLoop]: === Iteration 357 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:53,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:53,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1616065861, now seen corresponding path program 353 times [2021-06-01 17:33:53,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:53,386 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457656614] [2021-06-01 17:33:53,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:53,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:53,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:53,475 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:53,475 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457656614] [2021-06-01 17:33:53,475 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457656614] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:53,475 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:53,475 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:53,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212686141] [2021-06-01 17:33:53,475 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:53,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:53,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:53,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:53,476 INFO L87 Difference]: Start difference. First operand 1817 states and 7311 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:53,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:53,541 INFO L93 Difference]: Finished difference Result 4045 states and 15386 transitions. [2021-06-01 17:33:53,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:53,541 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:53,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:53,549 INFO L225 Difference]: With dead ends: 4045 [2021-06-01 17:33:53,549 INFO L226 Difference]: Without dead ends: 3782 [2021-06-01 17:33:53,549 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:53,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3782 states. [2021-06-01 17:33:53,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3782 to 1869. [2021-06-01 17:33:53,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1869 states, 1868 states have (on average 4.012312633832977) internal successors, (7495), 1868 states have internal predecessors, (7495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:53,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 7495 transitions. [2021-06-01 17:33:53,594 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 7495 transitions. Word has length 25 [2021-06-01 17:33:53,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:53,594 INFO L482 AbstractCegarLoop]: Abstraction has 1869 states and 7495 transitions. [2021-06-01 17:33:53,594 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:53,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 7495 transitions. [2021-06-01 17:33:53,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:53,597 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:53,597 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:53,597 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable356 [2021-06-01 17:33:53,597 INFO L430 AbstractCegarLoop]: === Iteration 358 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:53,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:53,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1397714275, now seen corresponding path program 354 times [2021-06-01 17:33:53,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:53,597 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514554038] [2021-06-01 17:33:53,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:53,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:53,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:53,687 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:53,688 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514554038] [2021-06-01 17:33:53,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514554038] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:53,688 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:53,688 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:53,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708746721] [2021-06-01 17:33:53,688 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:53,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:53,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:53,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:53,688 INFO L87 Difference]: Start difference. First operand 1869 states and 7495 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:53,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:53,740 INFO L93 Difference]: Finished difference Result 3973 states and 15074 transitions. [2021-06-01 17:33:53,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:53,741 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:53,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:53,748 INFO L225 Difference]: With dead ends: 3973 [2021-06-01 17:33:53,748 INFO L226 Difference]: Without dead ends: 3569 [2021-06-01 17:33:53,748 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:53,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3569 states. [2021-06-01 17:33:53,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3569 to 1783. [2021-06-01 17:33:53,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1783 states, 1782 states have (on average 4.0392817059483725) internal successors, (7198), 1782 states have internal predecessors, (7198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:53,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 7198 transitions. [2021-06-01 17:33:53,792 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 7198 transitions. Word has length 25 [2021-06-01 17:33:53,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:53,792 INFO L482 AbstractCegarLoop]: Abstraction has 1783 states and 7198 transitions. [2021-06-01 17:33:53,792 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:53,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 7198 transitions. [2021-06-01 17:33:53,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:53,794 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:53,794 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:53,794 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable357 [2021-06-01 17:33:53,794 INFO L430 AbstractCegarLoop]: === Iteration 359 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:53,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:53,795 INFO L82 PathProgramCache]: Analyzing trace with hash 2023140121, now seen corresponding path program 355 times [2021-06-01 17:33:53,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:53,795 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092454777] [2021-06-01 17:33:53,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:53,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:53,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:53,875 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:53,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092454777] [2021-06-01 17:33:53,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092454777] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:53,875 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:53,875 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:53,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094660527] [2021-06-01 17:33:53,875 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:53,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:53,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:53,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:53,875 INFO L87 Difference]: Start difference. First operand 1783 states and 7198 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:53,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:53,939 INFO L93 Difference]: Finished difference Result 3910 states and 14877 transitions. [2021-06-01 17:33:53,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:53,939 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:53,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:53,946 INFO L225 Difference]: With dead ends: 3910 [2021-06-01 17:33:53,946 INFO L226 Difference]: Without dead ends: 3663 [2021-06-01 17:33:53,946 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:53,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3663 states. [2021-06-01 17:33:53,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3663 to 1827. [2021-06-01 17:33:53,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1827 states, 1826 states have (on average 4.033953997809419) internal successors, (7366), 1826 states have internal predecessors, (7366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:53,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 7366 transitions. [2021-06-01 17:33:53,992 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 7366 transitions. Word has length 25 [2021-06-01 17:33:53,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:53,992 INFO L482 AbstractCegarLoop]: Abstraction has 1827 states and 7366 transitions. [2021-06-01 17:33:53,992 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:53,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 7366 transitions. [2021-06-01 17:33:53,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:53,994 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:53,995 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:53,995 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable358 [2021-06-01 17:33:53,995 INFO L430 AbstractCegarLoop]: === Iteration 360 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:53,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:53,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1190764549, now seen corresponding path program 356 times [2021-06-01 17:33:53,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:53,995 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007416891] [2021-06-01 17:33:53,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:54,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:54,084 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:54,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007416891] [2021-06-01 17:33:54,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007416891] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:54,084 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:54,084 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:54,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359456826] [2021-06-01 17:33:54,085 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:54,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:54,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:54,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:54,085 INFO L87 Difference]: Start difference. First operand 1827 states and 7366 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:54,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:54,159 INFO L93 Difference]: Finished difference Result 3926 states and 14925 transitions. [2021-06-01 17:33:54,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:54,159 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:54,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:54,167 INFO L225 Difference]: With dead ends: 3926 [2021-06-01 17:33:54,167 INFO L226 Difference]: Without dead ends: 3639 [2021-06-01 17:33:54,167 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:54,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3639 states. [2021-06-01 17:33:54,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3639 to 1803. [2021-06-01 17:33:54,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1803 states, 1802 states have (on average 4.038845726970033) internal successors, (7278), 1802 states have internal predecessors, (7278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:54,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1803 states to 1803 states and 7278 transitions. [2021-06-01 17:33:54,212 INFO L78 Accepts]: Start accepts. Automaton has 1803 states and 7278 transitions. Word has length 25 [2021-06-01 17:33:54,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:54,213 INFO L482 AbstractCegarLoop]: Abstraction has 1803 states and 7278 transitions. [2021-06-01 17:33:54,213 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:54,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1803 states and 7278 transitions. [2021-06-01 17:33:54,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:54,215 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:54,215 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:54,215 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable359 [2021-06-01 17:33:54,215 INFO L430 AbstractCegarLoop]: === Iteration 361 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:54,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:54,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1405616763, now seen corresponding path program 357 times [2021-06-01 17:33:54,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:54,216 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131641528] [2021-06-01 17:33:54,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:54,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:54,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:54,306 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:54,307 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131641528] [2021-06-01 17:33:54,307 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131641528] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:54,307 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:54,307 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:54,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971974099] [2021-06-01 17:33:54,307 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:54,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:54,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:54,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:54,307 INFO L87 Difference]: Start difference. First operand 1803 states and 7278 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:54,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:54,374 INFO L93 Difference]: Finished difference Result 3814 states and 14489 transitions. [2021-06-01 17:33:54,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:54,374 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:54,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:54,381 INFO L225 Difference]: With dead ends: 3814 [2021-06-01 17:33:54,382 INFO L226 Difference]: Without dead ends: 3567 [2021-06-01 17:33:54,382 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:54,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3567 states. [2021-06-01 17:33:54,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3567 to 1847. [2021-06-01 17:33:54,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1847 states, 1846 states have (on average 4.024918743228603) internal successors, (7430), 1846 states have internal predecessors, (7430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:54,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1847 states to 1847 states and 7430 transitions. [2021-06-01 17:33:54,426 INFO L78 Accepts]: Start accepts. Automaton has 1847 states and 7430 transitions. Word has length 25 [2021-06-01 17:33:54,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:54,427 INFO L482 AbstractCegarLoop]: Abstraction has 1847 states and 7430 transitions. [2021-06-01 17:33:54,427 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:54,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1847 states and 7430 transitions. [2021-06-01 17:33:54,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:54,429 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:54,429 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:54,429 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable360 [2021-06-01 17:33:54,429 INFO L430 AbstractCegarLoop]: === Iteration 362 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:54,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:54,429 INFO L82 PathProgramCache]: Analyzing trace with hash -2119579013, now seen corresponding path program 358 times [2021-06-01 17:33:54,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:54,429 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432590957] [2021-06-01 17:33:54,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:54,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:54,520 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:54,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432590957] [2021-06-01 17:33:54,520 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432590957] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:54,520 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:54,520 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:54,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038452519] [2021-06-01 17:33:54,520 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:54,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:54,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:54,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:54,521 INFO L87 Difference]: Start difference. First operand 1847 states and 7430 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:54,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:54,581 INFO L93 Difference]: Finished difference Result 3885 states and 14728 transitions. [2021-06-01 17:33:54,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:54,581 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:54,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:54,588 INFO L225 Difference]: With dead ends: 3885 [2021-06-01 17:33:54,588 INFO L226 Difference]: Without dead ends: 3523 [2021-06-01 17:33:54,589 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:54,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3523 states. [2021-06-01 17:33:54,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3523 to 1803. [2021-06-01 17:33:54,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1803 states, 1802 states have (on average 4.027746947835738) internal successors, (7258), 1802 states have internal predecessors, (7258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:54,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1803 states to 1803 states and 7258 transitions. [2021-06-01 17:33:54,633 INFO L78 Accepts]: Start accepts. Automaton has 1803 states and 7258 transitions. Word has length 25 [2021-06-01 17:33:54,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:54,633 INFO L482 AbstractCegarLoop]: Abstraction has 1803 states and 7258 transitions. [2021-06-01 17:33:54,633 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:54,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1803 states and 7258 transitions. [2021-06-01 17:33:54,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:54,635 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:54,635 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:54,635 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable361 [2021-06-01 17:33:54,635 INFO L430 AbstractCegarLoop]: === Iteration 363 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:54,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:54,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1793621725, now seen corresponding path program 359 times [2021-06-01 17:33:54,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:54,636 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44974705] [2021-06-01 17:33:54,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:54,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:54,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:54,725 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:54,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44974705] [2021-06-01 17:33:54,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44974705] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:54,725 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:54,725 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:54,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858782349] [2021-06-01 17:33:54,725 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:54,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:54,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:54,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:54,726 INFO L87 Difference]: Start difference. First operand 1803 states and 7258 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:54,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:54,807 INFO L93 Difference]: Finished difference Result 3802 states and 14433 transitions. [2021-06-01 17:33:54,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:54,807 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:54,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:54,814 INFO L225 Difference]: With dead ends: 3802 [2021-06-01 17:33:54,814 INFO L226 Difference]: Without dead ends: 3539 [2021-06-01 17:33:54,814 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:54,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3539 states. [2021-06-01 17:33:54,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3539 to 1855. [2021-06-01 17:33:54,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1855 states, 1854 states have (on average 4.014023732470334) internal successors, (7442), 1854 states have internal predecessors, (7442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:54,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1855 states to 1855 states and 7442 transitions. [2021-06-01 17:33:54,859 INFO L78 Accepts]: Start accepts. Automaton has 1855 states and 7442 transitions. Word has length 25 [2021-06-01 17:33:54,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:54,860 INFO L482 AbstractCegarLoop]: Abstraction has 1855 states and 7442 transitions. [2021-06-01 17:33:54,860 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:54,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1855 states and 7442 transitions. [2021-06-01 17:33:54,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:54,862 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:54,862 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:54,862 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable362 [2021-06-01 17:33:54,862 INFO L430 AbstractCegarLoop]: === Iteration 364 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:54,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:54,863 INFO L82 PathProgramCache]: Analyzing trace with hash -27413701, now seen corresponding path program 360 times [2021-06-01 17:33:54,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:54,863 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200895088] [2021-06-01 17:33:54,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:54,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:54,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:54,957 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:54,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200895088] [2021-06-01 17:33:54,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200895088] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:54,957 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:54,957 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:54,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491908870] [2021-06-01 17:33:54,957 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:54,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:54,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:54,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:54,957 INFO L87 Difference]: Start difference. First operand 1855 states and 7442 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:55,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:55,019 INFO L93 Difference]: Finished difference Result 3730 states and 14121 transitions. [2021-06-01 17:33:55,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:55,020 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:55,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:55,026 INFO L225 Difference]: With dead ends: 3730 [2021-06-01 17:33:55,026 INFO L226 Difference]: Without dead ends: 3320 [2021-06-01 17:33:55,026 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:55,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3320 states. [2021-06-01 17:33:55,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3320 to 1763. [2021-06-01 17:33:55,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1762 states have (on average 4.057321225879682) internal successors, (7149), 1762 states have internal predecessors, (7149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:55,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 7149 transitions. [2021-06-01 17:33:55,069 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 7149 transitions. Word has length 25 [2021-06-01 17:33:55,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:55,069 INFO L482 AbstractCegarLoop]: Abstraction has 1763 states and 7149 transitions. [2021-06-01 17:33:55,069 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:55,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 7149 transitions. [2021-06-01 17:33:55,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:55,071 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:55,072 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:55,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable363 [2021-06-01 17:33:55,072 INFO L430 AbstractCegarLoop]: === Iteration 365 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:55,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:55,072 INFO L82 PathProgramCache]: Analyzing trace with hash -252903815, now seen corresponding path program 361 times [2021-06-01 17:33:55,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:55,072 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416167776] [2021-06-01 17:33:55,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:55,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:55,161 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:55,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416167776] [2021-06-01 17:33:55,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416167776] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:55,161 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:55,161 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:55,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612312410] [2021-06-01 17:33:55,161 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:55,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:55,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:55,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:55,162 INFO L87 Difference]: Start difference. First operand 1763 states and 7149 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:55,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:55,225 INFO L93 Difference]: Finished difference Result 3975 states and 15126 transitions. [2021-06-01 17:33:55,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:55,225 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:55,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:55,233 INFO L225 Difference]: With dead ends: 3975 [2021-06-01 17:33:55,233 INFO L226 Difference]: Without dead ends: 3728 [2021-06-01 17:33:55,233 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:55,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3728 states. [2021-06-01 17:33:55,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3728 to 1829. [2021-06-01 17:33:55,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1828 states have (on average 4.049234135667396) internal successors, (7402), 1828 states have internal predecessors, (7402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:55,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 7402 transitions. [2021-06-01 17:33:55,279 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 7402 transitions. Word has length 25 [2021-06-01 17:33:55,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:55,279 INFO L482 AbstractCegarLoop]: Abstraction has 1829 states and 7402 transitions. [2021-06-01 17:33:55,279 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:55,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 7402 transitions. [2021-06-01 17:33:55,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:55,281 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:55,281 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:55,282 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable364 [2021-06-01 17:33:55,282 INFO L430 AbstractCegarLoop]: === Iteration 366 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:55,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:55,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1884850981, now seen corresponding path program 362 times [2021-06-01 17:33:55,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:55,282 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759541305] [2021-06-01 17:33:55,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:55,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:55,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:55,371 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:55,371 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759541305] [2021-06-01 17:33:55,371 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759541305] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:55,371 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:55,371 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:55,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123741950] [2021-06-01 17:33:55,371 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:55,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:55,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:55,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:55,371 INFO L87 Difference]: Start difference. First operand 1829 states and 7402 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:55,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:55,439 INFO L93 Difference]: Finished difference Result 4046 states and 15365 transitions. [2021-06-01 17:33:55,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:55,440 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:55,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:55,447 INFO L225 Difference]: With dead ends: 4046 [2021-06-01 17:33:55,447 INFO L226 Difference]: Without dead ends: 3684 [2021-06-01 17:33:55,447 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:55,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3684 states. [2021-06-01 17:33:55,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3684 to 1785. [2021-06-01 17:33:55,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1784 states have (on average 4.051569506726457) internal successors, (7228), 1784 states have internal predecessors, (7228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:55,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 7228 transitions. [2021-06-01 17:33:55,491 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 7228 transitions. Word has length 25 [2021-06-01 17:33:55,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:55,491 INFO L482 AbstractCegarLoop]: Abstraction has 1785 states and 7228 transitions. [2021-06-01 17:33:55,491 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:55,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 7228 transitions. [2021-06-01 17:33:55,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:55,493 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:55,493 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:55,494 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable365 [2021-06-01 17:33:55,494 INFO L430 AbstractCegarLoop]: === Iteration 367 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:55,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:55,494 INFO L82 PathProgramCache]: Analyzing trace with hash 406316601, now seen corresponding path program 363 times [2021-06-01 17:33:55,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:55,494 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380269353] [2021-06-01 17:33:55,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:55,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:55,586 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:55,586 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380269353] [2021-06-01 17:33:55,586 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380269353] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:55,586 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:55,586 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:55,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724830600] [2021-06-01 17:33:55,586 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:55,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:55,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:55,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:55,586 INFO L87 Difference]: Start difference. First operand 1785 states and 7228 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:55,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:55,643 INFO L93 Difference]: Finished difference Result 3924 states and 14921 transitions. [2021-06-01 17:33:55,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:55,644 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:55,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:55,651 INFO L225 Difference]: With dead ends: 3924 [2021-06-01 17:33:55,651 INFO L226 Difference]: Without dead ends: 3677 [2021-06-01 17:33:55,651 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:55,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3677 states. [2021-06-01 17:33:55,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3677 to 1813. [2021-06-01 17:33:55,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 1812 states have (on average 4.037527593818985) internal successors, (7316), 1812 states have internal predecessors, (7316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:55,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 7316 transitions. [2021-06-01 17:33:55,696 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 7316 transitions. Word has length 25 [2021-06-01 17:33:55,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:55,696 INFO L482 AbstractCegarLoop]: Abstraction has 1813 states and 7316 transitions. [2021-06-01 17:33:55,696 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:55,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 7316 transitions. [2021-06-01 17:33:55,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:55,698 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:55,698 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:55,699 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable366 [2021-06-01 17:33:55,699 INFO L430 AbstractCegarLoop]: === Iteration 368 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:55,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:55,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1162611941, now seen corresponding path program 364 times [2021-06-01 17:33:55,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:55,699 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737291227] [2021-06-01 17:33:55,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:55,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:55,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:55,791 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:55,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737291227] [2021-06-01 17:33:55,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737291227] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:55,791 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:55,791 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:55,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689852662] [2021-06-01 17:33:55,791 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:55,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:55,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:55,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:55,791 INFO L87 Difference]: Start difference. First operand 1813 states and 7316 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:55,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:55,863 INFO L93 Difference]: Finished difference Result 3960 states and 15041 transitions. [2021-06-01 17:33:55,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:55,863 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:55,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:55,870 INFO L225 Difference]: With dead ends: 3960 [2021-06-01 17:33:55,870 INFO L226 Difference]: Without dead ends: 3649 [2021-06-01 17:33:55,870 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:55,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3649 states. [2021-06-01 17:33:55,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3649 to 1785. [2021-06-01 17:33:55,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1784 states have (on average 4.04372197309417) internal successors, (7214), 1784 states have internal predecessors, (7214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:55,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 7214 transitions. [2021-06-01 17:33:55,915 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 7214 transitions. Word has length 25 [2021-06-01 17:33:55,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:55,915 INFO L482 AbstractCegarLoop]: Abstraction has 1785 states and 7214 transitions. [2021-06-01 17:33:55,915 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:55,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 7214 transitions. [2021-06-01 17:33:55,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:55,917 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:55,917 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:55,917 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable367 [2021-06-01 17:33:55,917 INFO L430 AbstractCegarLoop]: === Iteration 369 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:55,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:55,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1800775427, now seen corresponding path program 365 times [2021-06-01 17:33:55,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:55,918 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991921650] [2021-06-01 17:33:55,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:55,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:56,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:56,005 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:56,005 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991921650] [2021-06-01 17:33:56,005 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991921650] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:56,005 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:56,005 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:56,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756053807] [2021-06-01 17:33:56,006 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:56,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:56,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:56,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:56,006 INFO L87 Difference]: Start difference. First operand 1785 states and 7214 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:56,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:56,086 INFO L93 Difference]: Finished difference Result 4065 states and 15469 transitions. [2021-06-01 17:33:56,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:56,086 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:56,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:56,094 INFO L225 Difference]: With dead ends: 4065 [2021-06-01 17:33:56,094 INFO L226 Difference]: Without dead ends: 3782 [2021-06-01 17:33:56,094 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:56,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3782 states. [2021-06-01 17:33:56,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3782 to 1847. [2021-06-01 17:33:56,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1847 states, 1846 states have (on average 4.02546045503792) internal successors, (7431), 1846 states have internal predecessors, (7431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:56,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1847 states to 1847 states and 7431 transitions. [2021-06-01 17:33:56,140 INFO L78 Accepts]: Start accepts. Automaton has 1847 states and 7431 transitions. Word has length 25 [2021-06-01 17:33:56,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:56,140 INFO L482 AbstractCegarLoop]: Abstraction has 1847 states and 7431 transitions. [2021-06-01 17:33:56,140 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:56,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1847 states and 7431 transitions. [2021-06-01 17:33:56,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:56,143 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:56,143 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:56,143 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable368 [2021-06-01 17:33:56,143 INFO L430 AbstractCegarLoop]: === Iteration 370 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:56,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:56,143 INFO L82 PathProgramCache]: Analyzing trace with hash 2141052379, now seen corresponding path program 366 times [2021-06-01 17:33:56,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:56,143 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650393469] [2021-06-01 17:33:56,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:56,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:56,227 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:56,227 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650393469] [2021-06-01 17:33:56,227 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650393469] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:56,227 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:56,227 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:56,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715970410] [2021-06-01 17:33:56,227 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:56,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:56,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:56,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:56,227 INFO L87 Difference]: Start difference. First operand 1847 states and 7431 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:56,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:56,325 INFO L93 Difference]: Finished difference Result 4100 states and 15542 transitions. [2021-06-01 17:33:56,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:56,325 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:56,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:56,333 INFO L225 Difference]: With dead ends: 4100 [2021-06-01 17:33:56,333 INFO L226 Difference]: Without dead ends: 3698 [2021-06-01 17:33:56,333 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:56,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2021-06-01 17:33:56,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 1763. [2021-06-01 17:33:56,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1762 states have (on average 4.052780930760499) internal successors, (7141), 1762 states have internal predecessors, (7141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:56,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 7141 transitions. [2021-06-01 17:33:56,379 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 7141 transitions. Word has length 25 [2021-06-01 17:33:56,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:56,379 INFO L482 AbstractCegarLoop]: Abstraction has 1763 states and 7141 transitions. [2021-06-01 17:33:56,379 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:56,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 7141 transitions. [2021-06-01 17:33:56,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:56,382 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:56,382 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:56,382 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable369 [2021-06-01 17:33:56,382 INFO L430 AbstractCegarLoop]: === Iteration 371 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:56,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:56,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1456697947, now seen corresponding path program 367 times [2021-06-01 17:33:56,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:56,382 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992935780] [2021-06-01 17:33:56,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:56,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:56,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:56,474 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:56,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992935780] [2021-06-01 17:33:56,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992935780] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:56,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:56,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:56,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257198939] [2021-06-01 17:33:56,474 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:56,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:56,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:56,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:56,474 INFO L87 Difference]: Start difference. First operand 1763 states and 7141 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:56,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:56,530 INFO L93 Difference]: Finished difference Result 3903 states and 14806 transitions. [2021-06-01 17:33:56,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:56,530 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:56,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:56,537 INFO L225 Difference]: With dead ends: 3903 [2021-06-01 17:33:56,537 INFO L226 Difference]: Without dead ends: 3656 [2021-06-01 17:33:56,537 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:56,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3656 states. [2021-06-01 17:33:56,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3656 to 1823. [2021-06-01 17:33:56,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1823 states, 1822 states have (on average 4.042261251372119) internal successors, (7365), 1822 states have internal predecessors, (7365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:56,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1823 states to 1823 states and 7365 transitions. [2021-06-01 17:33:56,583 INFO L78 Accepts]: Start accepts. Automaton has 1823 states and 7365 transitions. Word has length 25 [2021-06-01 17:33:56,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:56,583 INFO L482 AbstractCegarLoop]: Abstraction has 1823 states and 7365 transitions. [2021-06-01 17:33:56,583 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:56,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1823 states and 7365 transitions. [2021-06-01 17:33:56,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:56,585 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:56,585 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:56,585 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable370 [2021-06-01 17:33:56,585 INFO L430 AbstractCegarLoop]: === Iteration 372 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:56,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:56,586 INFO L82 PathProgramCache]: Analyzing trace with hash -175249219, now seen corresponding path program 368 times [2021-06-01 17:33:56,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:56,586 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321119463] [2021-06-01 17:33:56,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:56,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:56,678 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:56,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321119463] [2021-06-01 17:33:56,678 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321119463] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:56,678 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:56,678 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:56,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778815816] [2021-06-01 17:33:56,678 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:56,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:56,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:56,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:56,678 INFO L87 Difference]: Start difference. First operand 1823 states and 7365 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:56,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:56,730 INFO L93 Difference]: Finished difference Result 3974 states and 15045 transitions. [2021-06-01 17:33:56,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:56,730 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:56,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:56,737 INFO L225 Difference]: With dead ends: 3974 [2021-06-01 17:33:56,737 INFO L226 Difference]: Without dead ends: 3612 [2021-06-01 17:33:56,738 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:56,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3612 states. [2021-06-01 17:33:56,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3612 to 1779. [2021-06-01 17:33:56,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1779 states, 1778 states have (on average 4.047806524184477) internal successors, (7197), 1778 states have internal predecessors, (7197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:56,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 7197 transitions. [2021-06-01 17:33:56,783 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 7197 transitions. Word has length 25 [2021-06-01 17:33:56,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:56,783 INFO L482 AbstractCegarLoop]: Abstraction has 1779 states and 7197 transitions. [2021-06-01 17:33:56,783 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:56,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 7197 transitions. [2021-06-01 17:33:56,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:56,785 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:56,785 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:56,785 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable371 [2021-06-01 17:33:56,786 INFO L430 AbstractCegarLoop]: === Iteration 373 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:56,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:56,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1783830073, now seen corresponding path program 369 times [2021-06-01 17:33:56,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:56,786 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127100244] [2021-06-01 17:33:56,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:56,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:56,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:56,897 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:56,897 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127100244] [2021-06-01 17:33:56,897 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127100244] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:56,897 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:56,897 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:56,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352390035] [2021-06-01 17:33:56,897 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:56,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:56,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:56,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:56,898 INFO L87 Difference]: Start difference. First operand 1779 states and 7197 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:56,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:56,968 INFO L93 Difference]: Finished difference Result 3804 states and 14407 transitions. [2021-06-01 17:33:56,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:56,969 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:56,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:56,978 INFO L225 Difference]: With dead ends: 3804 [2021-06-01 17:33:56,978 INFO L226 Difference]: Without dead ends: 3557 [2021-06-01 17:33:56,978 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:57,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2021-06-01 17:33:57,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 1795. [2021-06-01 17:33:57,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1794 states have (on average 4.038461538461538) internal successors, (7245), 1794 states have internal predecessors, (7245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:57,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 7245 transitions. [2021-06-01 17:33:57,040 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 7245 transitions. Word has length 25 [2021-06-01 17:33:57,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:57,040 INFO L482 AbstractCegarLoop]: Abstraction has 1795 states and 7245 transitions. [2021-06-01 17:33:57,040 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:57,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 7245 transitions. [2021-06-01 17:33:57,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:57,043 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:57,043 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:57,043 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable372 [2021-06-01 17:33:57,044 INFO L430 AbstractCegarLoop]: === Iteration 374 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:57,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:57,044 INFO L82 PathProgramCache]: Analyzing trace with hash 235907739, now seen corresponding path program 370 times [2021-06-01 17:33:57,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:57,044 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167335987] [2021-06-01 17:33:57,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:57,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:57,143 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:57,143 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167335987] [2021-06-01 17:33:57,143 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167335987] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:57,143 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:57,143 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:57,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080804843] [2021-06-01 17:33:57,143 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:57,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:57,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:57,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:57,144 INFO L87 Difference]: Start difference. First operand 1795 states and 7245 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:57,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:57,210 INFO L93 Difference]: Finished difference Result 3804 states and 14391 transitions. [2021-06-01 17:33:57,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:57,210 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:57,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:57,217 INFO L225 Difference]: With dead ends: 3804 [2021-06-01 17:33:57,218 INFO L226 Difference]: Without dead ends: 3541 [2021-06-01 17:33:57,218 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:57,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3541 states. [2021-06-01 17:33:57,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3541 to 1779. [2021-06-01 17:33:57,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1779 states, 1778 states have (on average 4.043307086614173) internal successors, (7189), 1778 states have internal predecessors, (7189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:57,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 7189 transitions. [2021-06-01 17:33:57,261 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 7189 transitions. Word has length 25 [2021-06-01 17:33:57,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:57,261 INFO L482 AbstractCegarLoop]: Abstraction has 1779 states and 7189 transitions. [2021-06-01 17:33:57,261 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:57,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 7189 transitions. [2021-06-01 17:33:57,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:57,264 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:57,264 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:57,264 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable373 [2021-06-01 17:33:57,264 INFO L430 AbstractCegarLoop]: === Iteration 375 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:57,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:57,264 INFO L82 PathProgramCache]: Analyzing trace with hash -402255747, now seen corresponding path program 371 times [2021-06-01 17:33:57,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:57,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382368583] [2021-06-01 17:33:57,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:57,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:57,357 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:57,357 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382368583] [2021-06-01 17:33:57,357 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382368583] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:57,357 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:57,357 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:57,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88219348] [2021-06-01 17:33:57,357 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:57,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:57,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:57,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:57,358 INFO L87 Difference]: Start difference. First operand 1779 states and 7189 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:57,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:57,423 INFO L93 Difference]: Finished difference Result 3903 states and 14782 transitions. [2021-06-01 17:33:57,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:57,423 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:57,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:57,431 INFO L225 Difference]: With dead ends: 3903 [2021-06-01 17:33:57,431 INFO L226 Difference]: Without dead ends: 3656 [2021-06-01 17:33:57,431 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:57,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3656 states. [2021-06-01 17:33:57,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3656 to 1823. [2021-06-01 17:33:57,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1823 states, 1822 states have (on average 4.0290889132821075) internal successors, (7341), 1822 states have internal predecessors, (7341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:57,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1823 states to 1823 states and 7341 transitions. [2021-06-01 17:33:57,476 INFO L78 Accepts]: Start accepts. Automaton has 1823 states and 7341 transitions. Word has length 25 [2021-06-01 17:33:57,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:57,476 INFO L482 AbstractCegarLoop]: Abstraction has 1823 states and 7341 transitions. [2021-06-01 17:33:57,476 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:57,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1823 states and 7341 transitions. [2021-06-01 17:33:57,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:57,478 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:57,478 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:57,478 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable374 [2021-06-01 17:33:57,478 INFO L430 AbstractCegarLoop]: === Iteration 376 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:57,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:57,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1406587685, now seen corresponding path program 372 times [2021-06-01 17:33:57,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:57,479 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481386637] [2021-06-01 17:33:57,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:57,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:57,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:57,573 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:57,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481386637] [2021-06-01 17:33:57,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481386637] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:57,573 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:57,573 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:57,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013833202] [2021-06-01 17:33:57,573 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:57,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:57,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:57,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:57,573 INFO L87 Difference]: Start difference. First operand 1823 states and 7341 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:57,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:57,629 INFO L93 Difference]: Finished difference Result 3974 states and 15021 transitions. [2021-06-01 17:33:57,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:57,630 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:57,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:57,637 INFO L225 Difference]: With dead ends: 3974 [2021-06-01 17:33:57,637 INFO L226 Difference]: Without dead ends: 3596 [2021-06-01 17:33:57,637 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:57,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3596 states. [2021-06-01 17:33:57,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3596 to 1763. [2021-06-01 17:33:57,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1762 states have (on average 4.048240635641316) internal successors, (7133), 1762 states have internal predecessors, (7133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:57,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 7133 transitions. [2021-06-01 17:33:57,682 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 7133 transitions. Word has length 25 [2021-06-01 17:33:57,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:57,682 INFO L482 AbstractCegarLoop]: Abstraction has 1763 states and 7133 transitions. [2021-06-01 17:33:57,682 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:57,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 7133 transitions. [2021-06-01 17:33:57,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:57,684 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:57,684 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:57,684 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable375 [2021-06-01 17:33:57,684 INFO L430 AbstractCegarLoop]: === Iteration 377 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:57,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:57,684 INFO L82 PathProgramCache]: Analyzing trace with hash 276168185, now seen corresponding path program 373 times [2021-06-01 17:33:57,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:57,685 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739450302] [2021-06-01 17:33:57,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:57,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:57,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:57,777 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:57,777 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739450302] [2021-06-01 17:33:57,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739450302] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:57,777 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:57,777 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:57,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300825797] [2021-06-01 17:33:57,777 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:57,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:57,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:57,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:57,777 INFO L87 Difference]: Start difference. First operand 1763 states and 7133 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:57,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:57,832 INFO L93 Difference]: Finished difference Result 3777 states and 14332 transitions. [2021-06-01 17:33:57,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:57,832 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:57,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:57,839 INFO L225 Difference]: With dead ends: 3777 [2021-06-01 17:33:57,840 INFO L226 Difference]: Without dead ends: 3530 [2021-06-01 17:33:57,840 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:57,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3530 states. [2021-06-01 17:33:57,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3530 to 1799. [2021-06-01 17:33:57,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1799 states, 1798 states have (on average 4.03615127919911) internal successors, (7257), 1798 states have internal predecessors, (7257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:57,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1799 states to 1799 states and 7257 transitions. [2021-06-01 17:33:57,896 INFO L78 Accepts]: Start accepts. Automaton has 1799 states and 7257 transitions. Word has length 25 [2021-06-01 17:33:57,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:57,896 INFO L482 AbstractCegarLoop]: Abstraction has 1799 states and 7257 transitions. [2021-06-01 17:33:57,896 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:57,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1799 states and 7257 transitions. [2021-06-01 17:33:57,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:57,899 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:57,899 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:57,899 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable376 [2021-06-01 17:33:57,899 INFO L430 AbstractCegarLoop]: === Iteration 378 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:57,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:57,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1292760357, now seen corresponding path program 374 times [2021-06-01 17:33:57,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:57,899 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075232611] [2021-06-01 17:33:57,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:57,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:57,983 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:57,983 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075232611] [2021-06-01 17:33:57,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075232611] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:57,983 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:57,983 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:57,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300658854] [2021-06-01 17:33:57,983 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:57,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:57,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:57,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:57,983 INFO L87 Difference]: Start difference. First operand 1799 states and 7257 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:58,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:58,055 INFO L93 Difference]: Finished difference Result 3813 states and 14452 transitions. [2021-06-01 17:33:58,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:58,055 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:58,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:58,062 INFO L225 Difference]: With dead ends: 3813 [2021-06-01 17:33:58,062 INFO L226 Difference]: Without dead ends: 3502 [2021-06-01 17:33:58,062 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:58,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3502 states. [2021-06-01 17:33:58,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3502 to 1771. [2021-06-01 17:33:58,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1771 states, 1770 states have (on average 4.045762711864406) internal successors, (7161), 1770 states have internal predecessors, (7161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:58,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1771 states to 1771 states and 7161 transitions. [2021-06-01 17:33:58,106 INFO L78 Accepts]: Start accepts. Automaton has 1771 states and 7161 transitions. Word has length 25 [2021-06-01 17:33:58,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:58,106 INFO L482 AbstractCegarLoop]: Abstraction has 1771 states and 7161 transitions. [2021-06-01 17:33:58,106 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:58,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1771 states and 7161 transitions. [2021-06-01 17:33:58,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:58,109 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:58,109 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:58,109 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable377 [2021-06-01 17:33:58,109 INFO L430 AbstractCegarLoop]: === Iteration 379 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:58,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:58,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1357230811, now seen corresponding path program 375 times [2021-06-01 17:33:58,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:58,109 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202135238] [2021-06-01 17:33:58,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:58,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:58,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:58,183 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:58,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202135238] [2021-06-01 17:33:58,183 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202135238] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:58,183 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:58,184 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:58,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263116187] [2021-06-01 17:33:58,184 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:58,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:58,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:58,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:58,184 INFO L87 Difference]: Start difference. First operand 1771 states and 7161 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:58,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:58,246 INFO L93 Difference]: Finished difference Result 3729 states and 14124 transitions. [2021-06-01 17:33:58,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:58,246 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:58,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:58,254 INFO L225 Difference]: With dead ends: 3729 [2021-06-01 17:33:58,254 INFO L226 Difference]: Without dead ends: 3482 [2021-06-01 17:33:58,254 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 80.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:58,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3482 states. [2021-06-01 17:33:58,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3482 to 1787. [2021-06-01 17:33:58,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1787 states, 1786 states have (on average 4.036394176931691) internal successors, (7209), 1786 states have internal predecessors, (7209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:58,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1787 states to 1787 states and 7209 transitions. [2021-06-01 17:33:58,301 INFO L78 Accepts]: Start accepts. Automaton has 1787 states and 7209 transitions. Word has length 25 [2021-06-01 17:33:58,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:58,301 INFO L482 AbstractCegarLoop]: Abstraction has 1787 states and 7209 transitions. [2021-06-01 17:33:58,301 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:58,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1787 states and 7209 transitions. [2021-06-01 17:33:58,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:58,303 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:58,304 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:58,304 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable378 [2021-06-01 17:33:58,304 INFO L430 AbstractCegarLoop]: === Iteration 380 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:58,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:58,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1908432293, now seen corresponding path program 376 times [2021-06-01 17:33:58,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:58,304 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54890125] [2021-06-01 17:33:58,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:58,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:58,379 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:58,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54890125] [2021-06-01 17:33:58,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54890125] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:58,379 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:58,379 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:58,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202625751] [2021-06-01 17:33:58,379 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:58,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:58,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:58,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:58,379 INFO L87 Difference]: Start difference. First operand 1787 states and 7209 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:58,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:58,451 INFO L93 Difference]: Finished difference Result 3729 states and 14108 transitions. [2021-06-01 17:33:58,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:58,451 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:58,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:58,458 INFO L225 Difference]: With dead ends: 3729 [2021-06-01 17:33:58,458 INFO L226 Difference]: Without dead ends: 3466 [2021-06-01 17:33:58,458 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:58,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3466 states. [2021-06-01 17:33:58,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3466 to 1771. [2021-06-01 17:33:58,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1771 states, 1770 states have (on average 4.041242937853108) internal successors, (7153), 1770 states have internal predecessors, (7153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:58,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1771 states to 1771 states and 7153 transitions. [2021-06-01 17:33:58,503 INFO L78 Accepts]: Start accepts. Automaton has 1771 states and 7153 transitions. Word has length 25 [2021-06-01 17:33:58,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:58,503 INFO L482 AbstractCegarLoop]: Abstraction has 1771 states and 7153 transitions. [2021-06-01 17:33:58,503 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:58,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1771 states and 7153 transitions. [2021-06-01 17:33:58,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:58,506 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:58,506 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:58,506 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable379 [2021-06-01 17:33:58,506 INFO L430 AbstractCegarLoop]: === Iteration 381 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:58,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:58,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1507528381, now seen corresponding path program 377 times [2021-06-01 17:33:58,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:58,506 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857945363] [2021-06-01 17:33:58,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:58,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:58,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:58,580 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:58,580 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857945363] [2021-06-01 17:33:58,580 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857945363] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:58,580 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:58,580 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:58,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89202057] [2021-06-01 17:33:58,580 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:58,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:58,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:58,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:58,581 INFO L87 Difference]: Start difference. First operand 1771 states and 7153 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:58,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:58,648 INFO L93 Difference]: Finished difference Result 3813 states and 14464 transitions. [2021-06-01 17:33:58,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:58,649 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:58,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:58,655 INFO L225 Difference]: With dead ends: 3813 [2021-06-01 17:33:58,656 INFO L226 Difference]: Without dead ends: 3530 [2021-06-01 17:33:58,656 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:58,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3530 states. [2021-06-01 17:33:58,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3530 to 1799. [2021-06-01 17:33:58,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1799 states, 1798 states have (on average 4.027252502780867) internal successors, (7241), 1798 states have internal predecessors, (7241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:58,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1799 states to 1799 states and 7241 transitions. [2021-06-01 17:33:58,701 INFO L78 Accepts]: Start accepts. Automaton has 1799 states and 7241 transitions. Word has length 25 [2021-06-01 17:33:58,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:58,701 INFO L482 AbstractCegarLoop]: Abstraction has 1799 states and 7241 transitions. [2021-06-01 17:33:58,701 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:58,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1799 states and 7241 transitions. [2021-06-01 17:33:58,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:58,703 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:58,703 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:58,703 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable380 [2021-06-01 17:33:58,703 INFO L430 AbstractCegarLoop]: === Iteration 382 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:58,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:58,704 INFO L82 PathProgramCache]: Analyzing trace with hash -535808613, now seen corresponding path program 378 times [2021-06-01 17:33:58,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:58,704 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679519707] [2021-06-01 17:33:58,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:58,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:58,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:58,778 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:58,778 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679519707] [2021-06-01 17:33:58,778 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679519707] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:58,778 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:58,778 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:58,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317960936] [2021-06-01 17:33:58,778 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:58,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:58,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:58,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:58,779 INFO L87 Difference]: Start difference. First operand 1799 states and 7241 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:58,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:58,852 INFO L93 Difference]: Finished difference Result 3777 states and 14288 transitions. [2021-06-01 17:33:58,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:58,852 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:58,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:58,859 INFO L225 Difference]: With dead ends: 3777 [2021-06-01 17:33:58,859 INFO L226 Difference]: Without dead ends: 3494 [2021-06-01 17:33:58,859 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:58,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3494 states. [2021-06-01 17:33:58,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3494 to 1763. [2021-06-01 17:33:58,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1762 states have (on average 4.045970488081725) internal successors, (7129), 1762 states have internal predecessors, (7129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:58,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 7129 transitions. [2021-06-01 17:33:58,903 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 7129 transitions. Word has length 25 [2021-06-01 17:33:58,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:58,903 INFO L482 AbstractCegarLoop]: Abstraction has 1763 states and 7129 transitions. [2021-06-01 17:33:58,903 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:58,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 7129 transitions. [2021-06-01 17:33:58,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:58,906 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:58,906 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:58,906 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable381 [2021-06-01 17:33:58,906 INFO L430 AbstractCegarLoop]: === Iteration 383 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:58,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:58,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1882225633, now seen corresponding path program 379 times [2021-06-01 17:33:58,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:58,906 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397852025] [2021-06-01 17:33:58,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:58,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:58,982 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:58,982 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397852025] [2021-06-01 17:33:58,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397852025] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:58,982 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:58,982 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:58,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784243497] [2021-06-01 17:33:58,982 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:58,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:58,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:58,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:58,983 INFO L87 Difference]: Start difference. First operand 1763 states and 7129 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:59,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:59,055 INFO L93 Difference]: Finished difference Result 3960 states and 15071 transitions. [2021-06-01 17:33:59,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:59,055 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:59,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:59,062 INFO L225 Difference]: With dead ends: 3960 [2021-06-01 17:33:59,062 INFO L226 Difference]: Without dead ends: 3677 [2021-06-01 17:33:59,063 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:59,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3677 states. [2021-06-01 17:33:59,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3677 to 1813. [2021-06-01 17:33:59,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 1812 states have (on average 4.0386313465783665) internal successors, (7318), 1812 states have internal predecessors, (7318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:59,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 7318 transitions. [2021-06-01 17:33:59,108 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 7318 transitions. Word has length 25 [2021-06-01 17:33:59,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:59,108 INFO L482 AbstractCegarLoop]: Abstraction has 1813 states and 7318 transitions. [2021-06-01 17:33:59,108 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:59,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 7318 transitions. [2021-06-01 17:33:59,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:59,111 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:59,111 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:59,111 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable382 [2021-06-01 17:33:59,111 INFO L430 AbstractCegarLoop]: === Iteration 384 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:59,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:59,111 INFO L82 PathProgramCache]: Analyzing trace with hash 369404669, now seen corresponding path program 380 times [2021-06-01 17:33:59,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:59,112 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716184273] [2021-06-01 17:33:59,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:59,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:59,200 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:59,200 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716184273] [2021-06-01 17:33:59,200 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716184273] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:59,200 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:59,200 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:59,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656735438] [2021-06-01 17:33:59,200 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:59,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:59,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:59,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:59,200 INFO L87 Difference]: Start difference. First operand 1813 states and 7318 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:59,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:59,279 INFO L93 Difference]: Finished difference Result 3924 states and 14895 transitions. [2021-06-01 17:33:59,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:59,280 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:59,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:59,288 INFO L225 Difference]: With dead ends: 3924 [2021-06-01 17:33:59,288 INFO L226 Difference]: Without dead ends: 3649 [2021-06-01 17:33:59,288 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:59,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3649 states. [2021-06-01 17:33:59,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3649 to 1785. [2021-06-01 17:33:59,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1784 states have (on average 4.044843049327354) internal successors, (7216), 1784 states have internal predecessors, (7216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:59,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 7216 transitions. [2021-06-01 17:33:59,335 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 7216 transitions. Word has length 25 [2021-06-01 17:33:59,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:59,335 INFO L482 AbstractCegarLoop]: Abstraction has 1785 states and 7216 transitions. [2021-06-01 17:33:59,335 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:59,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 7216 transitions. [2021-06-01 17:33:59,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:59,338 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:59,338 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:59,338 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable383 [2021-06-01 17:33:59,338 INFO L430 AbstractCegarLoop]: === Iteration 385 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:59,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:59,338 INFO L82 PathProgramCache]: Analyzing trace with hash -677576451, now seen corresponding path program 381 times [2021-06-01 17:33:59,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:59,338 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612527730] [2021-06-01 17:33:59,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:59,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:59,428 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:59,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612527730] [2021-06-01 17:33:59,428 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612527730] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:59,428 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:59,428 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:59,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580054467] [2021-06-01 17:33:59,428 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:59,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:59,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:59,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:59,429 INFO L87 Difference]: Start difference. First operand 1785 states and 7216 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:59,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:59,502 INFO L93 Difference]: Finished difference Result 4065 states and 15471 transitions. [2021-06-01 17:33:59,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:59,503 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:59,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:59,511 INFO L225 Difference]: With dead ends: 4065 [2021-06-01 17:33:59,511 INFO L226 Difference]: Without dead ends: 3782 [2021-06-01 17:33:59,511 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:59,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3782 states. [2021-06-01 17:33:59,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3782 to 1847. [2021-06-01 17:33:59,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1847 states, 1846 states have (on average 4.026543878656555) internal successors, (7433), 1846 states have internal predecessors, (7433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:59,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1847 states to 1847 states and 7433 transitions. [2021-06-01 17:33:59,557 INFO L78 Accepts]: Start accepts. Automaton has 1847 states and 7433 transitions. Word has length 25 [2021-06-01 17:33:59,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:59,557 INFO L482 AbstractCegarLoop]: Abstraction has 1847 states and 7433 transitions. [2021-06-01 17:33:59,557 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:59,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1847 states and 7433 transitions. [2021-06-01 17:33:59,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:59,560 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:59,560 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:59,560 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable384 [2021-06-01 17:33:59,560 INFO L430 AbstractCegarLoop]: === Iteration 386 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:59,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:59,560 INFO L82 PathProgramCache]: Analyzing trace with hash -596686595, now seen corresponding path program 382 times [2021-06-01 17:33:59,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:59,560 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287209078] [2021-06-01 17:33:59,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:59,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:59,636 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:59,636 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287209078] [2021-06-01 17:33:59,636 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287209078] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:59,636 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:59,636 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:59,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651633723] [2021-06-01 17:33:59,636 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:59,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:59,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:59,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:59,637 INFO L87 Difference]: Start difference. First operand 1847 states and 7433 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:59,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:59,695 INFO L93 Difference]: Finished difference Result 4100 states and 15544 transitions. [2021-06-01 17:33:59,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:59,695 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:59,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:59,702 INFO L225 Difference]: With dead ends: 4100 [2021-06-01 17:33:59,703 INFO L226 Difference]: Without dead ends: 3720 [2021-06-01 17:33:59,703 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:59,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3720 states. [2021-06-01 17:33:59,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3720 to 1785. [2021-06-01 17:33:59,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1784 states have (on average 4.0325112107623315) internal successors, (7194), 1784 states have internal predecessors, (7194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:59,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 7194 transitions. [2021-06-01 17:33:59,748 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 7194 transitions. Word has length 25 [2021-06-01 17:33:59,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:59,748 INFO L482 AbstractCegarLoop]: Abstraction has 1785 states and 7194 transitions. [2021-06-01 17:33:59,748 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:59,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 7194 transitions. [2021-06-01 17:33:59,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:59,751 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:59,751 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:59,751 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable385 [2021-06-01 17:33:59,751 INFO L430 AbstractCegarLoop]: === Iteration 387 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:59,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:59,751 INFO L82 PathProgramCache]: Analyzing trace with hash 304771163, now seen corresponding path program 383 times [2021-06-01 17:33:59,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:59,751 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692571560] [2021-06-01 17:33:59,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:59,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:33:59,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:33:59,837 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:33:59,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692571560] [2021-06-01 17:33:59,837 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692571560] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:33:59,837 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:33:59,837 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:33:59,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127467260] [2021-06-01 17:33:59,837 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:33:59,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:33:59,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:33:59,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:33:59,837 INFO L87 Difference]: Start difference. First operand 1785 states and 7194 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:59,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:33:59,909 INFO L93 Difference]: Finished difference Result 3975 states and 15070 transitions. [2021-06-01 17:33:59,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:33:59,909 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:33:59,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:33:59,917 INFO L225 Difference]: With dead ends: 3975 [2021-06-01 17:33:59,917 INFO L226 Difference]: Without dead ends: 3728 [2021-06-01 17:33:59,918 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:33:59,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3728 states. [2021-06-01 17:33:59,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3728 to 1829. [2021-06-01 17:33:59,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1828 states have (on average 4.018599562363239) internal successors, (7346), 1828 states have internal predecessors, (7346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:59,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 7346 transitions. [2021-06-01 17:33:59,964 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 7346 transitions. Word has length 25 [2021-06-01 17:33:59,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:33:59,964 INFO L482 AbstractCegarLoop]: Abstraction has 1829 states and 7346 transitions. [2021-06-01 17:33:59,965 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:33:59,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 7346 transitions. [2021-06-01 17:33:59,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:33:59,967 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:33:59,967 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:33:59,967 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable386 [2021-06-01 17:33:59,967 INFO L430 AbstractCegarLoop]: === Iteration 388 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:33:59,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:33:59,967 INFO L82 PathProgramCache]: Analyzing trace with hash -764747843, now seen corresponding path program 384 times [2021-06-01 17:33:59,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:33:59,967 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107802711] [2021-06-01 17:33:59,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:33:59,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:00,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:00,071 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:00,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107802711] [2021-06-01 17:34:00,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107802711] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:00,072 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:00,072 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:00,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477262310] [2021-06-01 17:34:00,072 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:00,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:00,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:00,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:00,072 INFO L87 Difference]: Start difference. First operand 1829 states and 7346 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:00,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:00,139 INFO L93 Difference]: Finished difference Result 4046 states and 15309 transitions. [2021-06-01 17:34:00,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:00,139 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:00,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:00,147 INFO L225 Difference]: With dead ends: 4046 [2021-06-01 17:34:00,147 INFO L226 Difference]: Without dead ends: 3654 [2021-06-01 17:34:00,147 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:00,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3654 states. [2021-06-01 17:34:00,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3654 to 1755. [2021-06-01 17:34:00,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1755 states, 1754 states have (on average 4.050741163055872) internal successors, (7105), 1754 states have internal predecessors, (7105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:00,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 7105 transitions. [2021-06-01 17:34:00,192 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 7105 transitions. Word has length 25 [2021-06-01 17:34:00,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:00,192 INFO L482 AbstractCegarLoop]: Abstraction has 1755 states and 7105 transitions. [2021-06-01 17:34:00,192 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:00,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 7105 transitions. [2021-06-01 17:34:00,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:00,194 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:00,194 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:00,195 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable387 [2021-06-01 17:34:00,195 INFO L430 AbstractCegarLoop]: === Iteration 389 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:00,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:00,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1996882395, now seen corresponding path program 385 times [2021-06-01 17:34:00,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:00,195 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048738531] [2021-06-01 17:34:00,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:00,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:00,303 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:00,303 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048738531] [2021-06-01 17:34:00,303 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048738531] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:00,303 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:00,303 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:00,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556810561] [2021-06-01 17:34:00,303 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:00,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:00,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:00,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:00,304 INFO L87 Difference]: Start difference. First operand 1755 states and 7105 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:00,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:00,359 INFO L93 Difference]: Finished difference Result 3993 states and 15211 transitions. [2021-06-01 17:34:00,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:00,359 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:00,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:00,366 INFO L225 Difference]: With dead ends: 3993 [2021-06-01 17:34:00,366 INFO L226 Difference]: Without dead ends: 3746 [2021-06-01 17:34:00,367 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:00,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3746 states. [2021-06-01 17:34:00,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3746 to 1799. [2021-06-01 17:34:00,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1799 states, 1798 states have (on average 4.03615127919911) internal successors, (7257), 1798 states have internal predecessors, (7257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:00,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1799 states to 1799 states and 7257 transitions. [2021-06-01 17:34:00,413 INFO L78 Accepts]: Start accepts. Automaton has 1799 states and 7257 transitions. Word has length 25 [2021-06-01 17:34:00,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:00,413 INFO L482 AbstractCegarLoop]: Abstraction has 1799 states and 7257 transitions. [2021-06-01 17:34:00,413 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:00,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1799 states and 7257 transitions. [2021-06-01 17:34:00,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:00,416 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:00,416 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:00,416 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable388 [2021-06-01 17:34:00,416 INFO L430 AbstractCegarLoop]: === Iteration 390 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:00,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:00,416 INFO L82 PathProgramCache]: Analyzing trace with hash 364935229, now seen corresponding path program 386 times [2021-06-01 17:34:00,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:00,416 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53239198] [2021-06-01 17:34:00,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:00,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:00,503 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:00,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53239198] [2021-06-01 17:34:00,504 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53239198] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:00,504 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:00,504 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:00,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327407460] [2021-06-01 17:34:00,504 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:00,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:00,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:00,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:00,504 INFO L87 Difference]: Start difference. First operand 1799 states and 7257 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:00,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:00,564 INFO L93 Difference]: Finished difference Result 4064 states and 15450 transitions. [2021-06-01 17:34:00,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:00,564 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:00,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:00,572 INFO L225 Difference]: With dead ends: 4064 [2021-06-01 17:34:00,572 INFO L226 Difference]: Without dead ends: 3702 [2021-06-01 17:34:00,572 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:00,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3702 states. [2021-06-01 17:34:00,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3702 to 1755. [2021-06-01 17:34:00,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1755 states, 1754 states have (on average 4.038198403648803) internal successors, (7083), 1754 states have internal predecessors, (7083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:00,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 7083 transitions. [2021-06-01 17:34:00,618 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 7083 transitions. Word has length 25 [2021-06-01 17:34:00,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:00,618 INFO L482 AbstractCegarLoop]: Abstraction has 1755 states and 7083 transitions. [2021-06-01 17:34:00,618 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:00,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 7083 transitions. [2021-06-01 17:34:00,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:00,621 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:00,621 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:00,621 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable389 [2021-06-01 17:34:00,621 INFO L430 AbstractCegarLoop]: === Iteration 391 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:00,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:00,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1638864485, now seen corresponding path program 387 times [2021-06-01 17:34:00,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:00,621 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803967910] [2021-06-01 17:34:00,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:00,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:00,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:00,712 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:00,712 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803967910] [2021-06-01 17:34:00,712 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803967910] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:00,712 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:00,712 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:00,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437344124] [2021-06-01 17:34:00,712 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:00,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:00,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:00,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:00,713 INFO L87 Difference]: Start difference. First operand 1755 states and 7083 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:00,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:00,772 INFO L93 Difference]: Finished difference Result 3942 states and 15006 transitions. [2021-06-01 17:34:00,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:00,772 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:00,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:00,782 INFO L225 Difference]: With dead ends: 3942 [2021-06-01 17:34:00,782 INFO L226 Difference]: Without dead ends: 3695 [2021-06-01 17:34:00,782 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:00,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3695 states. [2021-06-01 17:34:00,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3695 to 1783. [2021-06-01 17:34:00,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1783 states, 1782 states have (on average 4.024130190796858) internal successors, (7171), 1782 states have internal predecessors, (7171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:00,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 7171 transitions. [2021-06-01 17:34:00,829 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 7171 transitions. Word has length 25 [2021-06-01 17:34:00,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:00,829 INFO L482 AbstractCegarLoop]: Abstraction has 1783 states and 7171 transitions. [2021-06-01 17:34:00,829 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:00,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 7171 transitions. [2021-06-01 17:34:00,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:00,831 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:00,831 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:00,831 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable390 [2021-06-01 17:34:00,831 INFO L430 AbstractCegarLoop]: === Iteration 392 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:00,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:00,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1087174269, now seen corresponding path program 388 times [2021-06-01 17:34:00,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:00,832 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554166945] [2021-06-01 17:34:00,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:00,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:00,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:00,921 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:00,921 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554166945] [2021-06-01 17:34:00,921 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554166945] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:00,921 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:00,921 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:00,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478057819] [2021-06-01 17:34:00,921 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:00,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:00,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:00,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:00,922 INFO L87 Difference]: Start difference. First operand 1783 states and 7171 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:00,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:00,995 INFO L93 Difference]: Finished difference Result 3978 states and 15126 transitions. [2021-06-01 17:34:00,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:00,995 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:00,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:01,002 INFO L225 Difference]: With dead ends: 3978 [2021-06-01 17:34:01,003 INFO L226 Difference]: Without dead ends: 3667 [2021-06-01 17:34:01,003 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:01,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3667 states. [2021-06-01 17:34:01,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3667 to 1755. [2021-06-01 17:34:01,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1755 states, 1754 states have (on average 4.030216647662486) internal successors, (7069), 1754 states have internal predecessors, (7069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:01,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 7069 transitions. [2021-06-01 17:34:01,047 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 7069 transitions. Word has length 25 [2021-06-01 17:34:01,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:01,047 INFO L482 AbstractCegarLoop]: Abstraction has 1755 states and 7069 transitions. [2021-06-01 17:34:01,048 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:01,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 7069 transitions. [2021-06-01 17:34:01,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:01,050 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:01,050 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:01,050 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable391 [2021-06-01 17:34:01,050 INFO L430 AbstractCegarLoop]: === Iteration 393 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:01,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:01,050 INFO L82 PathProgramCache]: Analyzing trace with hash 449010783, now seen corresponding path program 389 times [2021-06-01 17:34:01,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:01,050 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495345804] [2021-06-01 17:34:01,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:01,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:01,132 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:01,132 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495345804] [2021-06-01 17:34:01,132 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495345804] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:01,132 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:01,132 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:01,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191822370] [2021-06-01 17:34:01,132 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:01,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:01,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:01,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:01,132 INFO L87 Difference]: Start difference. First operand 1755 states and 7069 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:01,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:01,200 INFO L93 Difference]: Finished difference Result 4083 states and 15554 transitions. [2021-06-01 17:34:01,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:01,201 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:01,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:01,209 INFO L225 Difference]: With dead ends: 4083 [2021-06-01 17:34:01,209 INFO L226 Difference]: Without dead ends: 3800 [2021-06-01 17:34:01,209 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:01,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3800 states. [2021-06-01 17:34:01,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3800 to 1817. [2021-06-01 17:34:01,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1817 states, 1816 states have (on average 4.012114537444934) internal successors, (7286), 1816 states have internal predecessors, (7286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:01,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1817 states to 1817 states and 7286 transitions. [2021-06-01 17:34:01,262 INFO L78 Accepts]: Start accepts. Automaton has 1817 states and 7286 transitions. Word has length 25 [2021-06-01 17:34:01,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:01,262 INFO L482 AbstractCegarLoop]: Abstraction has 1817 states and 7286 transitions. [2021-06-01 17:34:01,262 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:01,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1817 states and 7286 transitions. [2021-06-01 17:34:01,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:01,265 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:01,265 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:01,265 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable392 [2021-06-01 17:34:01,265 INFO L430 AbstractCegarLoop]: === Iteration 394 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:01,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:01,265 INFO L82 PathProgramCache]: Analyzing trace with hash 95871293, now seen corresponding path program 390 times [2021-06-01 17:34:01,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:01,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092076173] [2021-06-01 17:34:01,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:01,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:01,367 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:01,367 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092076173] [2021-06-01 17:34:01,367 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092076173] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:01,367 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:01,367 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:01,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964163726] [2021-06-01 17:34:01,367 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:01,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:01,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:01,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:01,368 INFO L87 Difference]: Start difference. First operand 1817 states and 7286 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:01,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:01,424 INFO L93 Difference]: Finished difference Result 4118 states and 15627 transitions. [2021-06-01 17:34:01,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:01,425 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:01,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:01,432 INFO L225 Difference]: With dead ends: 4118 [2021-06-01 17:34:01,433 INFO L226 Difference]: Without dead ends: 3716 [2021-06-01 17:34:01,433 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 90.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:01,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3716 states. [2021-06-01 17:34:01,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3716 to 1733. [2021-06-01 17:34:01,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1733 states, 1732 states have (on average 4.03810623556582) internal successors, (6994), 1732 states have internal predecessors, (6994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:01,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 6994 transitions. [2021-06-01 17:34:01,478 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 6994 transitions. Word has length 25 [2021-06-01 17:34:01,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:01,478 INFO L482 AbstractCegarLoop]: Abstraction has 1733 states and 6994 transitions. [2021-06-01 17:34:01,478 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:01,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 6994 transitions. [2021-06-01 17:34:01,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:01,481 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:01,481 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:01,481 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable393 [2021-06-01 17:34:01,481 INFO L430 AbstractCegarLoop]: === Iteration 395 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:01,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:01,481 INFO L82 PathProgramCache]: Analyzing trace with hash 74541531, now seen corresponding path program 391 times [2021-06-01 17:34:01,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:01,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083726856] [2021-06-01 17:34:01,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:01,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:01,579 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:01,580 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083726856] [2021-06-01 17:34:01,580 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083726856] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:01,580 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:01,580 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:01,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530298610] [2021-06-01 17:34:01,580 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:01,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:01,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:01,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:01,581 INFO L87 Difference]: Start difference. First operand 1733 states and 6994 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:01,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:01,644 INFO L93 Difference]: Finished difference Result 3913 states and 14877 transitions. [2021-06-01 17:34:01,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:01,644 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:01,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:01,651 INFO L225 Difference]: With dead ends: 3913 [2021-06-01 17:34:01,652 INFO L226 Difference]: Without dead ends: 3666 [2021-06-01 17:34:01,652 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:01,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3666 states. [2021-06-01 17:34:01,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3666 to 1797. [2021-06-01 17:34:01,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1797 states, 1796 states have (on average 4.0300668151447665) internal successors, (7238), 1796 states have internal predecessors, (7238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:01,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 7238 transitions. [2021-06-01 17:34:01,698 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 7238 transitions. Word has length 25 [2021-06-01 17:34:01,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:01,698 INFO L482 AbstractCegarLoop]: Abstraction has 1797 states and 7238 transitions. [2021-06-01 17:34:01,698 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:01,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 7238 transitions. [2021-06-01 17:34:01,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:01,700 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:01,700 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:01,700 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable394 [2021-06-01 17:34:01,701 INFO L430 AbstractCegarLoop]: === Iteration 396 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:01,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:01,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1557405635, now seen corresponding path program 392 times [2021-06-01 17:34:01,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:01,701 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641378320] [2021-06-01 17:34:01,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:01,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:01,799 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:01,799 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641378320] [2021-06-01 17:34:01,799 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641378320] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:01,800 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:01,800 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:01,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462568928] [2021-06-01 17:34:01,800 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:01,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:01,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:01,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:01,800 INFO L87 Difference]: Start difference. First operand 1797 states and 7238 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:01,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:01,863 INFO L93 Difference]: Finished difference Result 3984 states and 15116 transitions. [2021-06-01 17:34:01,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:01,863 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:01,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:01,871 INFO L225 Difference]: With dead ends: 3984 [2021-06-01 17:34:01,871 INFO L226 Difference]: Without dead ends: 3622 [2021-06-01 17:34:01,871 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:01,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2021-06-01 17:34:01,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 1753. [2021-06-01 17:34:01,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1753 states, 1752 states have (on average 4.03310502283105) internal successors, (7066), 1752 states have internal predecessors, (7066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:01,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1753 states to 1753 states and 7066 transitions. [2021-06-01 17:34:01,915 INFO L78 Accepts]: Start accepts. Automaton has 1753 states and 7066 transitions. Word has length 25 [2021-06-01 17:34:01,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:01,915 INFO L482 AbstractCegarLoop]: Abstraction has 1753 states and 7066 transitions. [2021-06-01 17:34:01,915 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:01,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1753 states and 7066 transitions. [2021-06-01 17:34:01,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:01,917 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:01,917 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:01,918 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable395 [2021-06-01 17:34:01,918 INFO L430 AbstractCegarLoop]: === Iteration 397 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:01,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:01,918 INFO L82 PathProgramCache]: Analyzing trace with hash 2087671353, now seen corresponding path program 393 times [2021-06-01 17:34:01,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:01,918 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989230728] [2021-06-01 17:34:01,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:01,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:02,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:02,004 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:02,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989230728] [2021-06-01 17:34:02,004 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989230728] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:02,004 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:02,004 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:02,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103132628] [2021-06-01 17:34:02,005 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:02,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:02,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:02,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:02,005 INFO L87 Difference]: Start difference. First operand 1753 states and 7066 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:02,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:02,061 INFO L93 Difference]: Finished difference Result 3782 states and 14378 transitions. [2021-06-01 17:34:02,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:02,062 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:02,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:02,069 INFO L225 Difference]: With dead ends: 3782 [2021-06-01 17:34:02,069 INFO L226 Difference]: Without dead ends: 3535 [2021-06-01 17:34:02,069 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 90.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:02,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3535 states. [2021-06-01 17:34:02,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3535 to 1777. [2021-06-01 17:34:02,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1777 states, 1776 states have (on average 4.021396396396397) internal successors, (7142), 1776 states have internal predecessors, (7142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:02,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 7142 transitions. [2021-06-01 17:34:02,113 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 7142 transitions. Word has length 25 [2021-06-01 17:34:02,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:02,114 INFO L482 AbstractCegarLoop]: Abstraction has 1777 states and 7142 transitions. [2021-06-01 17:34:02,114 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:02,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 7142 transitions. [2021-06-01 17:34:02,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:02,116 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:02,116 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:02,116 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable396 [2021-06-01 17:34:02,116 INFO L430 AbstractCegarLoop]: === Iteration 398 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:02,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:02,116 INFO L82 PathProgramCache]: Analyzing trace with hash 560755227, now seen corresponding path program 394 times [2021-06-01 17:34:02,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:02,116 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458168035] [2021-06-01 17:34:02,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:02,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:02,206 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:02,206 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458168035] [2021-06-01 17:34:02,206 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458168035] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:02,206 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:02,206 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:02,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48279251] [2021-06-01 17:34:02,206 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:02,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:02,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:02,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:02,207 INFO L87 Difference]: Start difference. First operand 1777 states and 7142 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:02,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:02,287 INFO L93 Difference]: Finished difference Result 3606 states and 13801 transitions. [2021-06-01 17:34:02,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:02,287 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:02,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:02,294 INFO L225 Difference]: With dead ends: 3606 [2021-06-01 17:34:02,294 INFO L226 Difference]: Without dead ends: 3319 [2021-06-01 17:34:02,294 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:02,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3319 states. [2021-06-01 17:34:02,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3319 to 1753. [2021-06-01 17:34:02,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1753 states, 1752 states have (on average 4.026255707762557) internal successors, (7054), 1752 states have internal predecessors, (7054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:02,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1753 states to 1753 states and 7054 transitions. [2021-06-01 17:34:02,338 INFO L78 Accepts]: Start accepts. Automaton has 1753 states and 7054 transitions. Word has length 25 [2021-06-01 17:34:02,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:02,338 INFO L482 AbstractCegarLoop]: Abstraction has 1753 states and 7054 transitions. [2021-06-01 17:34:02,338 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:02,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1753 states and 7054 transitions. [2021-06-01 17:34:02,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:02,340 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:02,340 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:02,340 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable397 [2021-06-01 17:34:02,340 INFO L430 AbstractCegarLoop]: === Iteration 399 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:02,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:02,341 INFO L82 PathProgramCache]: Analyzing trace with hash -77408259, now seen corresponding path program 395 times [2021-06-01 17:34:02,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:02,341 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462044537] [2021-06-01 17:34:02,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:02,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:02,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:02,435 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:02,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462044537] [2021-06-01 17:34:02,435 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462044537] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:02,435 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:02,435 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:02,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048473330] [2021-06-01 17:34:02,435 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:02,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:02,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:02,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:02,435 INFO L87 Difference]: Start difference. First operand 1753 states and 7054 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:02,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:02,511 INFO L93 Difference]: Finished difference Result 3953 states and 15029 transitions. [2021-06-01 17:34:02,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:02,511 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:02,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:02,519 INFO L225 Difference]: With dead ends: 3953 [2021-06-01 17:34:02,519 INFO L226 Difference]: Without dead ends: 3690 [2021-06-01 17:34:02,519 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:02,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3690 states. [2021-06-01 17:34:02,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3690 to 1805. [2021-06-01 17:34:02,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1805 states, 1804 states have (on average 4.012195121951219) internal successors, (7238), 1804 states have internal predecessors, (7238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:02,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1805 states to 1805 states and 7238 transitions. [2021-06-01 17:34:02,573 INFO L78 Accepts]: Start accepts. Automaton has 1805 states and 7238 transitions. Word has length 25 [2021-06-01 17:34:02,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:02,573 INFO L482 AbstractCegarLoop]: Abstraction has 1805 states and 7238 transitions. [2021-06-01 17:34:02,573 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:02,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1805 states and 7238 transitions. [2021-06-01 17:34:02,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:02,576 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:02,576 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:02,576 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable398 [2021-06-01 17:34:02,576 INFO L430 AbstractCegarLoop]: === Iteration 400 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:02,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:02,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1732932645, now seen corresponding path program 396 times [2021-06-01 17:34:02,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:02,576 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589881384] [2021-06-01 17:34:02,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:02,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:02,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:02,688 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:02,688 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589881384] [2021-06-01 17:34:02,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589881384] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:02,688 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:02,688 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:02,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333152767] [2021-06-01 17:34:02,688 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:02,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:02,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:02,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:02,689 INFO L87 Difference]: Start difference. First operand 1805 states and 7238 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:02,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:02,751 INFO L93 Difference]: Finished difference Result 3881 states and 14717 transitions. [2021-06-01 17:34:02,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:02,751 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:02,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:02,758 INFO L225 Difference]: With dead ends: 3881 [2021-06-01 17:34:02,759 INFO L226 Difference]: Without dead ends: 3491 [2021-06-01 17:34:02,759 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:02,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3491 states. [2021-06-01 17:34:02,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3491 to 1733. [2021-06-01 17:34:02,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1733 states, 1732 states have (on average 4.032332563510392) internal successors, (6984), 1732 states have internal predecessors, (6984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:02,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 6984 transitions. [2021-06-01 17:34:02,805 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 6984 transitions. Word has length 25 [2021-06-01 17:34:02,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:02,805 INFO L482 AbstractCegarLoop]: Abstraction has 1733 states and 6984 transitions. [2021-06-01 17:34:02,805 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:02,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 6984 transitions. [2021-06-01 17:34:02,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:02,807 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:02,807 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:02,807 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable399 [2021-06-01 17:34:02,807 INFO L430 AbstractCegarLoop]: === Iteration 401 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:02,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:02,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1216687609, now seen corresponding path program 397 times [2021-06-01 17:34:02,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:02,808 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472855853] [2021-06-01 17:34:02,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:02,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:02,895 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:02,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472855853] [2021-06-01 17:34:02,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472855853] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:02,895 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:02,895 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:02,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108667330] [2021-06-01 17:34:02,896 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:02,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:02,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:02,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:02,896 INFO L87 Difference]: Start difference. First operand 1733 states and 6984 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:02,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:02,959 INFO L93 Difference]: Finished difference Result 3803 states and 14465 transitions. [2021-06-01 17:34:02,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:02,959 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:02,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:02,966 INFO L225 Difference]: With dead ends: 3803 [2021-06-01 17:34:02,967 INFO L226 Difference]: Without dead ends: 3556 [2021-06-01 17:34:02,967 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:02,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3556 states. [2021-06-01 17:34:03,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3556 to 1773. [2021-06-01 17:34:03,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1773 states, 1772 states have (on average 4.022573363431151) internal successors, (7128), 1772 states have internal predecessors, (7128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:03,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1773 states to 1773 states and 7128 transitions. [2021-06-01 17:34:03,011 INFO L78 Accepts]: Start accepts. Automaton has 1773 states and 7128 transitions. Word has length 25 [2021-06-01 17:34:03,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:03,011 INFO L482 AbstractCegarLoop]: Abstraction has 1773 states and 7128 transitions. [2021-06-01 17:34:03,011 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:03,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1773 states and 7128 transitions. [2021-06-01 17:34:03,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:03,013 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:03,013 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:03,013 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable400 [2021-06-01 17:34:03,013 INFO L430 AbstractCegarLoop]: === Iteration 402 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:03,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:03,014 INFO L82 PathProgramCache]: Analyzing trace with hash -352240933, now seen corresponding path program 398 times [2021-06-01 17:34:03,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:03,014 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184804761] [2021-06-01 17:34:03,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:03,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:03,103 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:03,103 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184804761] [2021-06-01 17:34:03,103 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184804761] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:03,103 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:03,103 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:03,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581725292] [2021-06-01 17:34:03,103 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:03,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:03,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:03,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:03,104 INFO L87 Difference]: Start difference. First operand 1773 states and 7128 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:03,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:03,180 INFO L93 Difference]: Finished difference Result 3839 states and 14585 transitions. [2021-06-01 17:34:03,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:03,180 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:03,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:03,187 INFO L225 Difference]: With dead ends: 3839 [2021-06-01 17:34:03,187 INFO L226 Difference]: Without dead ends: 3528 [2021-06-01 17:34:03,187 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:03,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3528 states. [2021-06-01 17:34:03,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3528 to 1745. [2021-06-01 17:34:03,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1745 states, 1744 states have (on average 4.029816513761468) internal successors, (7028), 1744 states have internal predecessors, (7028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:03,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1745 states to 1745 states and 7028 transitions. [2021-06-01 17:34:03,231 INFO L78 Accepts]: Start accepts. Automaton has 1745 states and 7028 transitions. Word has length 25 [2021-06-01 17:34:03,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:03,231 INFO L482 AbstractCegarLoop]: Abstraction has 1745 states and 7028 transitions. [2021-06-01 17:34:03,231 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:03,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1745 states and 7028 transitions. [2021-06-01 17:34:03,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:03,233 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:03,233 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:03,234 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable401 [2021-06-01 17:34:03,234 INFO L430 AbstractCegarLoop]: === Iteration 403 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:03,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:03,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1009879643, now seen corresponding path program 399 times [2021-06-01 17:34:03,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:03,234 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088631099] [2021-06-01 17:34:03,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:03,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:03,310 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:03,310 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088631099] [2021-06-01 17:34:03,310 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088631099] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:03,310 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:03,310 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:03,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140884348] [2021-06-01 17:34:03,310 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:03,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:03,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:03,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:03,310 INFO L87 Difference]: Start difference. First operand 1745 states and 7028 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:03,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:03,363 INFO L93 Difference]: Finished difference Result 3723 states and 14157 transitions. [2021-06-01 17:34:03,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:03,363 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:03,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:03,371 INFO L225 Difference]: With dead ends: 3723 [2021-06-01 17:34:03,371 INFO L226 Difference]: Without dead ends: 3476 [2021-06-01 17:34:03,371 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:03,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3476 states. [2021-06-01 17:34:03,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3476 to 1769. [2021-06-01 17:34:03,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1769 states, 1768 states have (on average 4.018099547511312) internal successors, (7104), 1768 states have internal predecessors, (7104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:03,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1769 states to 1769 states and 7104 transitions. [2021-06-01 17:34:03,420 INFO L78 Accepts]: Start accepts. Automaton has 1769 states and 7104 transitions. Word has length 25 [2021-06-01 17:34:03,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:03,420 INFO L482 AbstractCegarLoop]: Abstraction has 1769 states and 7104 transitions. [2021-06-01 17:34:03,420 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:03,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1769 states and 7104 transitions. [2021-06-01 17:34:03,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:03,423 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:03,423 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:03,423 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable402 [2021-06-01 17:34:03,423 INFO L430 AbstractCegarLoop]: === Iteration 404 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:03,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:03,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1583584805, now seen corresponding path program 400 times [2021-06-01 17:34:03,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:03,424 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878146738] [2021-06-01 17:34:03,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:03,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:03,507 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:03,507 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878146738] [2021-06-01 17:34:03,507 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878146738] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:03,507 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:03,507 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:03,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911749070] [2021-06-01 17:34:03,508 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:03,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:03,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:03,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:03,508 INFO L87 Difference]: Start difference. First operand 1769 states and 7104 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:03,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:03,572 INFO L93 Difference]: Finished difference Result 3547 states and 13580 transitions. [2021-06-01 17:34:03,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:03,573 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:03,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:03,579 INFO L225 Difference]: With dead ends: 3547 [2021-06-01 17:34:03,579 INFO L226 Difference]: Without dead ends: 3260 [2021-06-01 17:34:03,580 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:03,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3260 states. [2021-06-01 17:34:03,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3260 to 1745. [2021-06-01 17:34:03,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1745 states, 1744 states have (on average 4.022935779816514) internal successors, (7016), 1744 states have internal predecessors, (7016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:03,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1745 states to 1745 states and 7016 transitions. [2021-06-01 17:34:03,622 INFO L78 Accepts]: Start accepts. Automaton has 1745 states and 7016 transitions. Word has length 25 [2021-06-01 17:34:03,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:03,622 INFO L482 AbstractCegarLoop]: Abstraction has 1745 states and 7016 transitions. [2021-06-01 17:34:03,622 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:03,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1745 states and 7016 transitions. [2021-06-01 17:34:03,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:03,624 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:03,624 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:03,624 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable403 [2021-06-01 17:34:03,624 INFO L430 AbstractCegarLoop]: === Iteration 405 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:03,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:03,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1160177213, now seen corresponding path program 401 times [2021-06-01 17:34:03,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:03,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794034196] [2021-06-01 17:34:03,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:03,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:03,699 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:03,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794034196] [2021-06-01 17:34:03,699 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794034196] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:03,699 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:03,699 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:03,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343984303] [2021-06-01 17:34:03,699 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:03,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:03,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:03,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:03,699 INFO L87 Difference]: Start difference. First operand 1745 states and 7016 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:03,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:03,770 INFO L93 Difference]: Finished difference Result 3771 states and 14349 transitions. [2021-06-01 17:34:03,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:03,770 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:03,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:03,777 INFO L225 Difference]: With dead ends: 3771 [2021-06-01 17:34:03,777 INFO L226 Difference]: Without dead ends: 3488 [2021-06-01 17:34:03,777 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:03,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3488 states. [2021-06-01 17:34:03,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3488 to 1781. [2021-06-01 17:34:03,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1781 states, 1780 states have (on average 4.008988764044944) internal successors, (7136), 1780 states have internal predecessors, (7136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:03,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1781 states to 1781 states and 7136 transitions. [2021-06-01 17:34:03,821 INFO L78 Accepts]: Start accepts. Automaton has 1781 states and 7136 transitions. Word has length 25 [2021-06-01 17:34:03,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:03,821 INFO L482 AbstractCegarLoop]: Abstraction has 1781 states and 7136 transitions. [2021-06-01 17:34:03,821 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:03,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states and 7136 transitions. [2021-06-01 17:34:03,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:03,824 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:03,824 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:03,824 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable404 [2021-06-01 17:34:03,824 INFO L430 AbstractCegarLoop]: === Iteration 406 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:03,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:03,824 INFO L82 PathProgramCache]: Analyzing trace with hash -231967333, now seen corresponding path program 402 times [2021-06-01 17:34:03,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:03,824 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948671728] [2021-06-01 17:34:03,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:03,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:03,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:03,898 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:03,898 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948671728] [2021-06-01 17:34:03,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948671728] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:03,898 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:03,898 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:03,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134488653] [2021-06-01 17:34:03,898 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:03,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:03,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:03,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:03,898 INFO L87 Difference]: Start difference. First operand 1781 states and 7136 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:03,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:03,963 INFO L93 Difference]: Finished difference Result 3559 states and 13612 transitions. [2021-06-01 17:34:03,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:03,963 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:03,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:03,970 INFO L225 Difference]: With dead ends: 3559 [2021-06-01 17:34:03,970 INFO L226 Difference]: Without dead ends: 3248 [2021-06-01 17:34:03,970 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:03,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3248 states. [2021-06-01 17:34:04,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3248 to 1733. [2021-06-01 17:34:04,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1733 states, 1732 states have (on average 4.028868360277136) internal successors, (6978), 1732 states have internal predecessors, (6978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:04,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 6978 transitions. [2021-06-01 17:34:04,014 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 6978 transitions. Word has length 25 [2021-06-01 17:34:04,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:04,014 INFO L482 AbstractCegarLoop]: Abstraction has 1733 states and 6978 transitions. [2021-06-01 17:34:04,014 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:04,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 6978 transitions. [2021-06-01 17:34:04,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:04,016 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:04,016 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:04,016 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable405 [2021-06-01 17:34:04,016 INFO L430 AbstractCegarLoop]: === Iteration 407 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:04,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:04,016 INFO L82 PathProgramCache]: Analyzing trace with hash 2065390495, now seen corresponding path program 403 times [2021-06-01 17:34:04,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:04,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517458757] [2021-06-01 17:34:04,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:04,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:04,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:04,090 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:04,090 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517458757] [2021-06-01 17:34:04,090 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517458757] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:04,090 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:04,090 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:04,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289626189] [2021-06-01 17:34:04,090 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:04,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:04,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:04,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:04,090 INFO L87 Difference]: Start difference. First operand 1733 states and 6978 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:04,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:04,154 INFO L93 Difference]: Finished difference Result 4038 states and 15436 transitions. [2021-06-01 17:34:04,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:04,154 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:04,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:04,162 INFO L225 Difference]: With dead ends: 4038 [2021-06-01 17:34:04,162 INFO L226 Difference]: Without dead ends: 3755 [2021-06-01 17:34:04,162 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:04,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3755 states. [2021-06-01 17:34:04,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3755 to 1795. [2021-06-01 17:34:04,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1794 states have (on average 4.025083612040134) internal successors, (7221), 1794 states have internal predecessors, (7221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:04,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 7221 transitions. [2021-06-01 17:34:04,207 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 7221 transitions. Word has length 25 [2021-06-01 17:34:04,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:04,207 INFO L482 AbstractCegarLoop]: Abstraction has 1795 states and 7221 transitions. [2021-06-01 17:34:04,207 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:04,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 7221 transitions. [2021-06-01 17:34:04,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:04,210 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:04,210 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:04,210 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable406 [2021-06-01 17:34:04,210 INFO L430 AbstractCegarLoop]: === Iteration 408 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:04,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:04,210 INFO L82 PathProgramCache]: Analyzing trace with hash 673245949, now seen corresponding path program 404 times [2021-06-01 17:34:04,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:04,210 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788169915] [2021-06-01 17:34:04,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:04,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:04,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:04,289 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:04,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788169915] [2021-06-01 17:34:04,289 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788169915] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:04,289 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:04,289 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:04,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108962245] [2021-06-01 17:34:04,289 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:04,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:04,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:04,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:04,290 INFO L87 Difference]: Start difference. First operand 1795 states and 7221 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:04,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:04,368 INFO L93 Difference]: Finished difference Result 4018 states and 15324 transitions. [2021-06-01 17:34:04,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:04,368 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:04,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:04,376 INFO L225 Difference]: With dead ends: 4018 [2021-06-01 17:34:04,376 INFO L226 Difference]: Without dead ends: 3719 [2021-06-01 17:34:04,376 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:04,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3719 states. [2021-06-01 17:34:04,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3719 to 1759. [2021-06-01 17:34:04,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1759 states, 1758 states have (on average 4.0290102389078495) internal successors, (7083), 1758 states have internal predecessors, (7083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:04,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1759 states to 1759 states and 7083 transitions. [2021-06-01 17:34:04,421 INFO L78 Accepts]: Start accepts. Automaton has 1759 states and 7083 transitions. Word has length 25 [2021-06-01 17:34:04,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:04,421 INFO L482 AbstractCegarLoop]: Abstraction has 1759 states and 7083 transitions. [2021-06-01 17:34:04,421 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:04,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1759 states and 7083 transitions. [2021-06-01 17:34:04,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:04,425 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:04,425 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:04,425 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable407 [2021-06-01 17:34:04,425 INFO L430 AbstractCegarLoop]: === Iteration 409 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:04,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:04,425 INFO L82 PathProgramCache]: Analyzing trace with hash 244355069, now seen corresponding path program 405 times [2021-06-01 17:34:04,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:04,425 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978120595] [2021-06-01 17:34:04,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:04,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:04,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:04,502 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:04,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978120595] [2021-06-01 17:34:04,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978120595] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:04,502 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:04,502 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:04,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214030007] [2021-06-01 17:34:04,502 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:04,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:04,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:04,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:04,502 INFO L87 Difference]: Start difference. First operand 1759 states and 7083 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:04,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:04,569 INFO L93 Difference]: Finished difference Result 4057 states and 15457 transitions. [2021-06-01 17:34:04,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:04,569 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:04,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:04,577 INFO L225 Difference]: With dead ends: 4057 [2021-06-01 17:34:04,577 INFO L226 Difference]: Without dead ends: 3774 [2021-06-01 17:34:04,577 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:04,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3774 states. [2021-06-01 17:34:04,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3774 to 1821. [2021-06-01 17:34:04,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1821 states, 1820 states have (on average 4.010989010989011) internal successors, (7300), 1820 states have internal predecessors, (7300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:04,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 7300 transitions. [2021-06-01 17:34:04,623 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 7300 transitions. Word has length 25 [2021-06-01 17:34:04,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:04,624 INFO L482 AbstractCegarLoop]: Abstraction has 1821 states and 7300 transitions. [2021-06-01 17:34:04,624 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:04,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 7300 transitions. [2021-06-01 17:34:04,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:04,626 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:04,626 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:04,626 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable408 [2021-06-01 17:34:04,626 INFO L430 AbstractCegarLoop]: === Iteration 410 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:04,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:04,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1613115517, now seen corresponding path program 406 times [2021-06-01 17:34:04,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:04,626 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583537656] [2021-06-01 17:34:04,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:04,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:04,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:04,702 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:04,702 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583537656] [2021-06-01 17:34:04,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583537656] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:04,703 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:04,703 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:04,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341813039] [2021-06-01 17:34:04,703 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:04,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:04,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:04,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:04,703 INFO L87 Difference]: Start difference. First operand 1821 states and 7300 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:04,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:04,755 INFO L93 Difference]: Finished difference Result 4092 states and 15530 transitions. [2021-06-01 17:34:04,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:04,755 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:04,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:04,763 INFO L225 Difference]: With dead ends: 4092 [2021-06-01 17:34:04,763 INFO L226 Difference]: Without dead ends: 3712 [2021-06-01 17:34:04,763 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:04,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3712 states. [2021-06-01 17:34:04,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3712 to 1759. [2021-06-01 17:34:04,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1759 states, 1758 states have (on average 4.014220705346985) internal successors, (7057), 1758 states have internal predecessors, (7057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:04,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1759 states to 1759 states and 7057 transitions. [2021-06-01 17:34:04,809 INFO L78 Accepts]: Start accepts. Automaton has 1759 states and 7057 transitions. Word has length 25 [2021-06-01 17:34:04,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:04,809 INFO L482 AbstractCegarLoop]: Abstraction has 1759 states and 7057 transitions. [2021-06-01 17:34:04,809 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:04,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1759 states and 7057 transitions. [2021-06-01 17:34:04,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:04,811 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:04,811 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:04,811 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable409 [2021-06-01 17:34:04,811 INFO L430 AbstractCegarLoop]: === Iteration 411 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:04,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:04,812 INFO L82 PathProgramCache]: Analyzing trace with hash 608612443, now seen corresponding path program 407 times [2021-06-01 17:34:04,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:04,812 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230345688] [2021-06-01 17:34:04,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:04,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:04,903 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:04,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230345688] [2021-06-01 17:34:04,903 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230345688] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:04,903 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:04,903 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:04,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832966098] [2021-06-01 17:34:04,903 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:04,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:04,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:04,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:04,904 INFO L87 Difference]: Start difference. First operand 1759 states and 7057 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:04,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:04,967 INFO L93 Difference]: Finished difference Result 4007 states and 15236 transitions. [2021-06-01 17:34:04,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:04,968 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:04,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:04,975 INFO L225 Difference]: With dead ends: 4007 [2021-06-01 17:34:04,975 INFO L226 Difference]: Without dead ends: 3744 [2021-06-01 17:34:04,975 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:04,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3744 states. [2021-06-01 17:34:05,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3744 to 1811. [2021-06-01 17:34:05,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1811 states, 1810 states have (on average 4.000552486187845) internal successors, (7241), 1810 states have internal predecessors, (7241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:05,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 7241 transitions. [2021-06-01 17:34:05,035 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 7241 transitions. Word has length 25 [2021-06-01 17:34:05,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:05,036 INFO L482 AbstractCegarLoop]: Abstraction has 1811 states and 7241 transitions. [2021-06-01 17:34:05,036 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:05,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 7241 transitions. [2021-06-01 17:34:05,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:05,038 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:05,038 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:05,039 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable410 [2021-06-01 17:34:05,039 INFO L430 AbstractCegarLoop]: === Iteration 412 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:05,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:05,039 INFO L82 PathProgramCache]: Analyzing trace with hash 826964029, now seen corresponding path program 408 times [2021-06-01 17:34:05,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:05,039 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47360390] [2021-06-01 17:34:05,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:05,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:05,124 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:05,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47360390] [2021-06-01 17:34:05,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47360390] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:05,124 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:05,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:05,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236806654] [2021-06-01 17:34:05,124 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:05,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:05,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:05,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:05,124 INFO L87 Difference]: Start difference. First operand 1811 states and 7241 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:05,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:05,181 INFO L93 Difference]: Finished difference Result 3935 states and 14924 transitions. [2021-06-01 17:34:05,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:05,181 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:05,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:05,188 INFO L225 Difference]: With dead ends: 3935 [2021-06-01 17:34:05,189 INFO L226 Difference]: Without dead ends: 3529 [2021-06-01 17:34:05,189 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 90.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:05,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3529 states. [2021-06-01 17:34:05,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3529 to 1723. [2021-06-01 17:34:05,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1723 states, 1722 states have (on average 4.035423925667828) internal successors, (6949), 1722 states have internal predecessors, (6949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:05,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1723 states to 1723 states and 6949 transitions. [2021-06-01 17:34:05,232 INFO L78 Accepts]: Start accepts. Automaton has 1723 states and 6949 transitions. Word has length 25 [2021-06-01 17:34:05,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:05,232 INFO L482 AbstractCegarLoop]: Abstraction has 1723 states and 6949 transitions. [2021-06-01 17:34:05,232 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:05,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1723 states and 6949 transitions. [2021-06-01 17:34:05,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:05,234 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:05,234 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:05,234 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable411 [2021-06-01 17:34:05,234 INFO L430 AbstractCegarLoop]: === Iteration 413 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:05,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:05,235 INFO L82 PathProgramCache]: Analyzing trace with hash -689078979, now seen corresponding path program 409 times [2021-06-01 17:34:05,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:05,235 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716367737] [2021-06-01 17:34:05,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:05,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:05,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:05,330 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:05,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716367737] [2021-06-01 17:34:05,330 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716367737] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:05,330 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:05,330 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:05,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090463181] [2021-06-01 17:34:05,330 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:05,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:05,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:05,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:05,331 INFO L87 Difference]: Start difference. First operand 1723 states and 6949 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:05,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:05,389 INFO L93 Difference]: Finished difference Result 3763 states and 14202 transitions. [2021-06-01 17:34:05,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:05,390 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:05,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:05,397 INFO L225 Difference]: With dead ends: 3763 [2021-06-01 17:34:05,397 INFO L226 Difference]: Without dead ends: 3516 [2021-06-01 17:34:05,397 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:05,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3516 states. [2021-06-01 17:34:05,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3516 to 1767. [2021-06-01 17:34:05,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1767 states, 1766 states have (on average 4.020951302378256) internal successors, (7101), 1766 states have internal predecessors, (7101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:05,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 7101 transitions. [2021-06-01 17:34:05,441 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 7101 transitions. Word has length 25 [2021-06-01 17:34:05,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:05,441 INFO L482 AbstractCegarLoop]: Abstraction has 1767 states and 7101 transitions. [2021-06-01 17:34:05,442 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:05,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 7101 transitions. [2021-06-01 17:34:05,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:05,444 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:05,444 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:05,444 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable412 [2021-06-01 17:34:05,444 INFO L430 AbstractCegarLoop]: === Iteration 414 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:05,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:05,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1973941151, now seen corresponding path program 410 times [2021-06-01 17:34:05,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:05,444 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941191170] [2021-06-01 17:34:05,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:05,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:05,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:05,540 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:05,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941191170] [2021-06-01 17:34:05,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941191170] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:05,541 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:05,541 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:05,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271169849] [2021-06-01 17:34:05,541 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:05,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:05,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:05,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:05,541 INFO L87 Difference]: Start difference. First operand 1767 states and 7101 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:05,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:05,593 INFO L93 Difference]: Finished difference Result 3834 states and 14441 transitions. [2021-06-01 17:34:05,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:05,594 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:05,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:05,600 INFO L225 Difference]: With dead ends: 3834 [2021-06-01 17:34:05,601 INFO L226 Difference]: Without dead ends: 3472 [2021-06-01 17:34:05,601 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:05,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3472 states. [2021-06-01 17:34:05,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3472 to 1723. [2021-06-01 17:34:05,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1723 states, 1722 states have (on average 4.026132404181185) internal successors, (6933), 1722 states have internal predecessors, (6933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:05,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1723 states to 1723 states and 6933 transitions. [2021-06-01 17:34:05,644 INFO L78 Accepts]: Start accepts. Automaton has 1723 states and 6933 transitions. Word has length 25 [2021-06-01 17:34:05,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:05,644 INFO L482 AbstractCegarLoop]: Abstraction has 1723 states and 6933 transitions. [2021-06-01 17:34:05,644 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:05,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1723 states and 6933 transitions. [2021-06-01 17:34:05,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:05,646 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:05,646 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:05,646 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable413 [2021-06-01 17:34:05,646 INFO L430 AbstractCegarLoop]: === Iteration 415 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:05,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:05,646 INFO L82 PathProgramCache]: Analyzing trace with hash -361946853, now seen corresponding path program 411 times [2021-06-01 17:34:05,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:05,647 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390069930] [2021-06-01 17:34:05,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:05,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:05,735 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:05,735 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390069930] [2021-06-01 17:34:05,736 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390069930] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:05,736 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:05,736 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:05,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215716108] [2021-06-01 17:34:05,736 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:05,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:05,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:05,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:05,736 INFO L87 Difference]: Start difference. First operand 1723 states and 6933 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:05,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:05,787 INFO L93 Difference]: Finished difference Result 3664 states and 13803 transitions. [2021-06-01 17:34:05,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:05,787 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:05,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:05,794 INFO L225 Difference]: With dead ends: 3664 [2021-06-01 17:34:05,794 INFO L226 Difference]: Without dead ends: 3417 [2021-06-01 17:34:05,794 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:05,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3417 states. [2021-06-01 17:34:05,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3417 to 1739. [2021-06-01 17:34:05,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1739 states, 1738 states have (on average 4.01668584579977) internal successors, (6981), 1738 states have internal predecessors, (6981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:05,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1739 states to 1739 states and 6981 transitions. [2021-06-01 17:34:05,837 INFO L78 Accepts]: Start accepts. Automaton has 1739 states and 6981 transitions. Word has length 25 [2021-06-01 17:34:05,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:05,837 INFO L482 AbstractCegarLoop]: Abstraction has 1739 states and 6981 transitions. [2021-06-01 17:34:05,837 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:05,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1739 states and 6981 transitions. [2021-06-01 17:34:05,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:05,839 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:05,839 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:05,839 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable414 [2021-06-01 17:34:05,839 INFO L430 AbstractCegarLoop]: === Iteration 416 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:05,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:05,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1909869187, now seen corresponding path program 412 times [2021-06-01 17:34:05,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:05,840 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785653652] [2021-06-01 17:34:05,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:05,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:05,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:05,928 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:05,928 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785653652] [2021-06-01 17:34:05,928 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785653652] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:05,928 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:05,928 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:05,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703458696] [2021-06-01 17:34:05,929 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:05,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:05,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:05,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:05,929 INFO L87 Difference]: Start difference. First operand 1739 states and 6981 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:05,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:05,994 INFO L93 Difference]: Finished difference Result 3664 states and 13787 transitions. [2021-06-01 17:34:05,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:05,994 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:05,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:06,001 INFO L225 Difference]: With dead ends: 3664 [2021-06-01 17:34:06,001 INFO L226 Difference]: Without dead ends: 3401 [2021-06-01 17:34:06,001 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:06,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3401 states. [2021-06-01 17:34:06,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3401 to 1723. [2021-06-01 17:34:06,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1723 states, 1722 states have (on average 4.021486643437863) internal successors, (6925), 1722 states have internal predecessors, (6925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:06,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1723 states to 1723 states and 6925 transitions. [2021-06-01 17:34:06,043 INFO L78 Accepts]: Start accepts. Automaton has 1723 states and 6925 transitions. Word has length 25 [2021-06-01 17:34:06,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:06,044 INFO L482 AbstractCegarLoop]: Abstraction has 1723 states and 6925 transitions. [2021-06-01 17:34:06,044 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:06,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1723 states and 6925 transitions. [2021-06-01 17:34:06,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:06,046 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:06,046 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:06,046 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable415 [2021-06-01 17:34:06,046 INFO L430 AbstractCegarLoop]: === Iteration 417 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:06,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:06,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1746934623, now seen corresponding path program 413 times [2021-06-01 17:34:06,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:06,046 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247746396] [2021-06-01 17:34:06,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:06,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:06,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:06,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:06,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247746396] [2021-06-01 17:34:06,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247746396] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:06,145 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:06,146 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:06,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909842672] [2021-06-01 17:34:06,146 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:06,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:06,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:06,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:06,146 INFO L87 Difference]: Start difference. First operand 1723 states and 6925 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:06,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:06,209 INFO L93 Difference]: Finished difference Result 3763 states and 14178 transitions. [2021-06-01 17:34:06,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:06,209 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:06,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:06,216 INFO L225 Difference]: With dead ends: 3763 [2021-06-01 17:34:06,216 INFO L226 Difference]: Without dead ends: 3516 [2021-06-01 17:34:06,217 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 117.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:06,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3516 states. [2021-06-01 17:34:06,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3516 to 1767. [2021-06-01 17:34:06,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1767 states, 1766 states have (on average 4.007361268403171) internal successors, (7077), 1766 states have internal predecessors, (7077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:06,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 7077 transitions. [2021-06-01 17:34:06,261 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 7077 transitions. Word has length 25 [2021-06-01 17:34:06,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:06,261 INFO L482 AbstractCegarLoop]: Abstraction has 1767 states and 7077 transitions. [2021-06-01 17:34:06,261 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:06,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 7077 transitions. [2021-06-01 17:34:06,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:06,264 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:06,264 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:06,264 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable416 [2021-06-01 17:34:06,264 INFO L430 AbstractCegarLoop]: === Iteration 418 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:06,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:06,264 INFO L82 PathProgramCache]: Analyzing trace with hash 742602685, now seen corresponding path program 414 times [2021-06-01 17:34:06,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:06,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131403031] [2021-06-01 17:34:06,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:06,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:06,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:06,365 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:06,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131403031] [2021-06-01 17:34:06,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131403031] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:06,365 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:06,365 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:06,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526792908] [2021-06-01 17:34:06,365 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:06,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:06,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:06,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:06,366 INFO L87 Difference]: Start difference. First operand 1767 states and 7077 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:06,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:06,426 INFO L93 Difference]: Finished difference Result 3834 states and 14417 transitions. [2021-06-01 17:34:06,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:06,426 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:06,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:06,433 INFO L225 Difference]: With dead ends: 3834 [2021-06-01 17:34:06,433 INFO L226 Difference]: Without dead ends: 3456 [2021-06-01 17:34:06,434 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:06,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3456 states. [2021-06-01 17:34:06,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3456 to 1707. [2021-06-01 17:34:06,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1706 states have (on average 4.026377491207503) internal successors, (6869), 1706 states have internal predecessors, (6869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:06,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 6869 transitions. [2021-06-01 17:34:06,476 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 6869 transitions. Word has length 25 [2021-06-01 17:34:06,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:06,476 INFO L482 AbstractCegarLoop]: Abstraction has 1707 states and 6869 transitions. [2021-06-01 17:34:06,476 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:06,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 6869 transitions. [2021-06-01 17:34:06,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:06,479 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:06,479 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:06,479 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable417 [2021-06-01 17:34:06,479 INFO L430 AbstractCegarLoop]: === Iteration 419 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:06,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:06,479 INFO L82 PathProgramCache]: Analyzing trace with hash 768968091, now seen corresponding path program 415 times [2021-06-01 17:34:06,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:06,479 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395234936] [2021-06-01 17:34:06,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:06,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:06,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:06,575 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:06,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395234936] [2021-06-01 17:34:06,576 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395234936] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:06,576 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:06,576 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:06,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963799531] [2021-06-01 17:34:06,576 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:06,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:06,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:06,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:06,576 INFO L87 Difference]: Start difference. First operand 1707 states and 6869 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:06,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:06,629 INFO L93 Difference]: Finished difference Result 3735 states and 14090 transitions. [2021-06-01 17:34:06,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:06,629 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:06,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:06,636 INFO L225 Difference]: With dead ends: 3735 [2021-06-01 17:34:06,636 INFO L226 Difference]: Without dead ends: 3488 [2021-06-01 17:34:06,636 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:06,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3488 states. [2021-06-01 17:34:06,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3488 to 1707. [2021-06-01 17:34:06,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1706 states have (on average 4.009964830011723) internal successors, (6841), 1706 states have internal predecessors, (6841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:06,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 6841 transitions. [2021-06-01 17:34:06,679 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 6841 transitions. Word has length 25 [2021-06-01 17:34:06,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:06,679 INFO L482 AbstractCegarLoop]: Abstraction has 1707 states and 6841 transitions. [2021-06-01 17:34:06,679 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:06,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 6841 transitions. [2021-06-01 17:34:06,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:06,681 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:06,682 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:06,682 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable418 [2021-06-01 17:34:06,682 INFO L430 AbstractCegarLoop]: === Iteration 420 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:06,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:06,682 INFO L82 PathProgramCache]: Analyzing trace with hash -862979075, now seen corresponding path program 416 times [2021-06-01 17:34:06,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:06,682 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496086992] [2021-06-01 17:34:06,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:06,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:06,778 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:06,778 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496086992] [2021-06-01 17:34:06,778 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496086992] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:06,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:06,779 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:06,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054064724] [2021-06-01 17:34:06,779 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:06,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:06,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:06,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:06,779 INFO L87 Difference]: Start difference. First operand 1707 states and 6841 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:06,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:06,836 INFO L93 Difference]: Finished difference Result 3806 states and 14329 transitions. [2021-06-01 17:34:06,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:06,836 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:06,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:06,843 INFO L225 Difference]: With dead ends: 3806 [2021-06-01 17:34:06,843 INFO L226 Difference]: Without dead ends: 3444 [2021-06-01 17:34:06,843 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:06,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3444 states. [2021-06-01 17:34:06,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3444 to 1663. [2021-06-01 17:34:06,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1662 states have (on average 4.012635379061372) internal successors, (6669), 1662 states have internal predecessors, (6669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:06,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 6669 transitions. [2021-06-01 17:34:06,885 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 6669 transitions. Word has length 25 [2021-06-01 17:34:06,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:06,885 INFO L482 AbstractCegarLoop]: Abstraction has 1663 states and 6669 transitions. [2021-06-01 17:34:06,885 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:06,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 6669 transitions. [2021-06-01 17:34:06,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:06,887 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:06,888 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:06,888 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable419 [2021-06-01 17:34:06,888 INFO L430 AbstractCegarLoop]: === Iteration 421 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:06,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:06,888 INFO L82 PathProgramCache]: Analyzing trace with hash 42490267, now seen corresponding path program 417 times [2021-06-01 17:34:06,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:06,888 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286340863] [2021-06-01 17:34:06,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:06,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:06,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:06,979 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:06,979 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286340863] [2021-06-01 17:34:06,979 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286340863] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:06,979 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:06,979 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:06,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124956727] [2021-06-01 17:34:06,980 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:06,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:06,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:06,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:06,980 INFO L87 Difference]: Start difference. First operand 1663 states and 6669 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:07,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:07,033 INFO L93 Difference]: Finished difference Result 3604 states and 13591 transitions. [2021-06-01 17:34:07,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:07,033 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:07,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:07,040 INFO L225 Difference]: With dead ends: 3604 [2021-06-01 17:34:07,040 INFO L226 Difference]: Without dead ends: 3357 [2021-06-01 17:34:07,041 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:07,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3357 states. [2021-06-01 17:34:07,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3357 to 1687. [2021-06-01 17:34:07,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1686 states have (on average 4.000593119810202) internal successors, (6745), 1686 states have internal predecessors, (6745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:07,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 6745 transitions. [2021-06-01 17:34:07,083 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 6745 transitions. Word has length 25 [2021-06-01 17:34:07,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:07,083 INFO L482 AbstractCegarLoop]: Abstraction has 1687 states and 6745 transitions. [2021-06-01 17:34:07,083 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:07,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 6745 transitions. [2021-06-01 17:34:07,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:07,086 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:07,086 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:07,086 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable420 [2021-06-01 17:34:07,086 INFO L430 AbstractCegarLoop]: === Iteration 422 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:07,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:07,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1484425859, now seen corresponding path program 418 times [2021-06-01 17:34:07,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:07,086 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361514275] [2021-06-01 17:34:07,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:07,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:07,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:07,177 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:07,177 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361514275] [2021-06-01 17:34:07,177 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361514275] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:07,177 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:07,177 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:07,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951303265] [2021-06-01 17:34:07,177 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:07,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:07,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:07,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:07,178 INFO L87 Difference]: Start difference. First operand 1687 states and 6745 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:07,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:07,245 INFO L93 Difference]: Finished difference Result 3428 states and 13014 transitions. [2021-06-01 17:34:07,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:07,245 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:07,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:07,252 INFO L225 Difference]: With dead ends: 3428 [2021-06-01 17:34:07,252 INFO L226 Difference]: Without dead ends: 3141 [2021-06-01 17:34:07,253 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:07,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3141 states. [2021-06-01 17:34:07,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3141 to 1663. [2021-06-01 17:34:07,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1662 states have (on average 4.005415162454874) internal successors, (6657), 1662 states have internal predecessors, (6657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:07,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 6657 transitions. [2021-06-01 17:34:07,297 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 6657 transitions. Word has length 25 [2021-06-01 17:34:07,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:07,297 INFO L482 AbstractCegarLoop]: Abstraction has 1663 states and 6657 transitions. [2021-06-01 17:34:07,297 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:07,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 6657 transitions. [2021-06-01 17:34:07,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:07,300 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:07,300 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:07,300 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable421 [2021-06-01 17:34:07,300 INFO L430 AbstractCegarLoop]: === Iteration 423 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:07,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:07,300 INFO L82 PathProgramCache]: Analyzing trace with hash -2122589345, now seen corresponding path program 419 times [2021-06-01 17:34:07,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:07,300 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654879725] [2021-06-01 17:34:07,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:07,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:07,418 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:07,418 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654879725] [2021-06-01 17:34:07,418 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654879725] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:07,418 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:07,418 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:07,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656038877] [2021-06-01 17:34:07,418 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:07,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:07,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:07,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:07,418 INFO L87 Difference]: Start difference. First operand 1663 states and 6657 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:07,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:07,490 INFO L93 Difference]: Finished difference Result 3775 states and 14242 transitions. [2021-06-01 17:34:07,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:07,490 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:07,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:07,497 INFO L225 Difference]: With dead ends: 3775 [2021-06-01 17:34:07,498 INFO L226 Difference]: Without dead ends: 3512 [2021-06-01 17:34:07,498 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 136.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:07,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3512 states. [2021-06-01 17:34:07,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3512 to 1715. [2021-06-01 17:34:07,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1715 states, 1714 states have (on average 3.9912485414235706) internal successors, (6841), 1714 states have internal predecessors, (6841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:07,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 6841 transitions. [2021-06-01 17:34:07,544 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 6841 transitions. Word has length 25 [2021-06-01 17:34:07,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:07,545 INFO L482 AbstractCegarLoop]: Abstraction has 1715 states and 6841 transitions. [2021-06-01 17:34:07,545 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:07,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 6841 transitions. [2021-06-01 17:34:07,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:07,547 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:07,547 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:07,547 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable422 [2021-06-01 17:34:07,547 INFO L430 AbstractCegarLoop]: === Iteration 424 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:07,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:07,548 INFO L82 PathProgramCache]: Analyzing trace with hash 516853565, now seen corresponding path program 420 times [2021-06-01 17:34:07,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:07,548 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664624621] [2021-06-01 17:34:07,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:07,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:07,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:07,650 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:07,650 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664624621] [2021-06-01 17:34:07,650 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664624621] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:07,650 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:07,650 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:07,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171930543] [2021-06-01 17:34:07,650 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:07,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:07,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:07,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:07,650 INFO L87 Difference]: Start difference. First operand 1715 states and 6841 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:07,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:07,703 INFO L93 Difference]: Finished difference Result 3703 states and 13930 transitions. [2021-06-01 17:34:07,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:07,703 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:07,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:07,710 INFO L225 Difference]: With dead ends: 3703 [2021-06-01 17:34:07,710 INFO L226 Difference]: Without dead ends: 3313 [2021-06-01 17:34:07,710 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:07,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3313 states. [2021-06-01 17:34:07,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3313 to 1643. [2021-06-01 17:34:07,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1643 states, 1642 states have (on average 4.01278928136419) internal successors, (6589), 1642 states have internal predecessors, (6589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:07,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1643 states to 1643 states and 6589 transitions. [2021-06-01 17:34:07,751 INFO L78 Accepts]: Start accepts. Automaton has 1643 states and 6589 transitions. Word has length 25 [2021-06-01 17:34:07,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:07,751 INFO L482 AbstractCegarLoop]: Abstraction has 1643 states and 6589 transitions. [2021-06-01 17:34:07,752 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:07,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1643 states and 6589 transitions. [2021-06-01 17:34:07,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:07,754 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:07,754 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:07,754 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable423 [2021-06-01 17:34:07,754 INFO L430 AbstractCegarLoop]: === Iteration 425 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:07,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:07,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1520528889, now seen corresponding path program 421 times [2021-06-01 17:34:07,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:07,754 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649424671] [2021-06-01 17:34:07,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:07,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:07,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:07,836 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:07,836 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649424671] [2021-06-01 17:34:07,836 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649424671] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:07,836 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:07,836 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:07,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459508788] [2021-06-01 17:34:07,836 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:07,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:07,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:07,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:07,836 INFO L87 Difference]: Start difference. First operand 1643 states and 6589 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:07,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:07,890 INFO L93 Difference]: Finished difference Result 3469 states and 13052 transitions. [2021-06-01 17:34:07,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:07,890 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:07,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:07,897 INFO L225 Difference]: With dead ends: 3469 [2021-06-01 17:34:07,897 INFO L226 Difference]: Without dead ends: 3222 [2021-06-01 17:34:07,897 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 87.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:07,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3222 states. [2021-06-01 17:34:07,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3222 to 1667. [2021-06-01 17:34:07,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1666 states have (on average 4.005402160864346) internal successors, (6673), 1666 states have internal predecessors, (6673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:07,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 6673 transitions. [2021-06-01 17:34:07,937 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 6673 transitions. Word has length 25 [2021-06-01 17:34:07,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:07,937 INFO L482 AbstractCegarLoop]: Abstraction has 1667 states and 6673 transitions. [2021-06-01 17:34:07,937 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:07,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 6673 transitions. [2021-06-01 17:34:07,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:07,940 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:07,940 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:07,940 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable424 [2021-06-01 17:34:07,940 INFO L430 AbstractCegarLoop]: === Iteration 426 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:07,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:07,940 INFO L82 PathProgramCache]: Analyzing trace with hash -27393445, now seen corresponding path program 422 times [2021-06-01 17:34:07,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:07,940 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015917673] [2021-06-01 17:34:07,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:08,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:08,021 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:08,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015917673] [2021-06-01 17:34:08,021 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015917673] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:08,021 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:08,021 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:08,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555147655] [2021-06-01 17:34:08,021 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:08,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:08,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:08,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:08,022 INFO L87 Difference]: Start difference. First operand 1667 states and 6673 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:08,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:08,090 INFO L93 Difference]: Finished difference Result 3469 states and 13036 transitions. [2021-06-01 17:34:08,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:08,090 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:08,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:08,097 INFO L225 Difference]: With dead ends: 3469 [2021-06-01 17:34:08,097 INFO L226 Difference]: Without dead ends: 3206 [2021-06-01 17:34:08,097 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:08,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3206 states. [2021-06-01 17:34:08,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3206 to 1651. [2021-06-01 17:34:08,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1651 states, 1650 states have (on average 4.010303030303031) internal successors, (6617), 1650 states have internal predecessors, (6617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:08,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 6617 transitions. [2021-06-01 17:34:08,137 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 6617 transitions. Word has length 25 [2021-06-01 17:34:08,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:08,137 INFO L482 AbstractCegarLoop]: Abstraction has 1651 states and 6617 transitions. [2021-06-01 17:34:08,137 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:08,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 6617 transitions. [2021-06-01 17:34:08,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:08,139 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:08,139 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:08,140 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable425 [2021-06-01 17:34:08,140 INFO L430 AbstractCegarLoop]: === Iteration 427 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:08,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:08,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1693375781, now seen corresponding path program 423 times [2021-06-01 17:34:08,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:08,140 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301839504] [2021-06-01 17:34:08,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:08,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:08,223 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:08,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301839504] [2021-06-01 17:34:08,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301839504] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:08,223 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:08,223 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:08,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104066476] [2021-06-01 17:34:08,223 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:08,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:08,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:08,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:08,223 INFO L87 Difference]: Start difference. First operand 1651 states and 6617 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:08,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:08,282 INFO L93 Difference]: Finished difference Result 3413 states and 12848 transitions. [2021-06-01 17:34:08,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:08,283 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:08,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:08,289 INFO L225 Difference]: With dead ends: 3413 [2021-06-01 17:34:08,289 INFO L226 Difference]: Without dead ends: 3166 [2021-06-01 17:34:08,289 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 88.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:08,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3166 states. [2021-06-01 17:34:08,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3166 to 1675. [2021-06-01 17:34:08,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1675 states, 1674 states have (on average 3.9982078853046596) internal successors, (6693), 1674 states have internal predecessors, (6693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:08,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 6693 transitions. [2021-06-01 17:34:08,330 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 6693 transitions. Word has length 25 [2021-06-01 17:34:08,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:08,330 INFO L482 AbstractCegarLoop]: Abstraction has 1675 states and 6693 transitions. [2021-06-01 17:34:08,330 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:08,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 6693 transitions. [2021-06-01 17:34:08,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:08,333 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:08,333 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:08,333 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable426 [2021-06-01 17:34:08,333 INFO L430 AbstractCegarLoop]: === Iteration 428 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:08,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:08,333 INFO L82 PathProgramCache]: Analyzing trace with hash -643065381, now seen corresponding path program 424 times [2021-06-01 17:34:08,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:08,333 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730907833] [2021-06-01 17:34:08,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:08,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:08,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:08,415 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:08,415 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730907833] [2021-06-01 17:34:08,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730907833] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:08,415 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:08,416 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:08,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212774662] [2021-06-01 17:34:08,416 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:08,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:08,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:08,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:08,416 INFO L87 Difference]: Start difference. First operand 1675 states and 6693 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:08,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:08,481 INFO L93 Difference]: Finished difference Result 3237 states and 12271 transitions. [2021-06-01 17:34:08,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:08,482 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:08,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:08,487 INFO L225 Difference]: With dead ends: 3237 [2021-06-01 17:34:08,488 INFO L226 Difference]: Without dead ends: 2950 [2021-06-01 17:34:08,488 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:08,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2021-06-01 17:34:08,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1651. [2021-06-01 17:34:08,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1651 states, 1650 states have (on average 4.005454545454546) internal successors, (6609), 1650 states have internal predecessors, (6609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:08,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 6609 transitions. [2021-06-01 17:34:08,526 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 6609 transitions. Word has length 25 [2021-06-01 17:34:08,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:08,526 INFO L482 AbstractCegarLoop]: Abstraction has 1651 states and 6609 transitions. [2021-06-01 17:34:08,526 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:08,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 6609 transitions. [2021-06-01 17:34:08,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:08,528 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:08,528 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:08,528 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable427 [2021-06-01 17:34:08,528 INFO L430 AbstractCegarLoop]: === Iteration 429 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:08,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:08,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1485024701, now seen corresponding path program 425 times [2021-06-01 17:34:08,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:08,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203581656] [2021-06-01 17:34:08,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:08,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:08,610 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:08,610 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203581656] [2021-06-01 17:34:08,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203581656] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:08,610 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:08,610 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:08,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416855128] [2021-06-01 17:34:08,610 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:08,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:08,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:08,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:08,611 INFO L87 Difference]: Start difference. First operand 1651 states and 6609 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:08,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:08,675 INFO L93 Difference]: Finished difference Result 3221 states and 12215 transitions. [2021-06-01 17:34:08,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:08,676 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:08,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:08,681 INFO L225 Difference]: With dead ends: 3221 [2021-06-01 17:34:08,682 INFO L226 Difference]: Without dead ends: 2974 [2021-06-01 17:34:08,682 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:08,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2974 states. [2021-06-01 17:34:08,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2974 to 1675. [2021-06-01 17:34:08,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1675 states, 1674 states have (on average 3.9934289127837514) internal successors, (6685), 1674 states have internal predecessors, (6685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:08,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 6685 transitions. [2021-06-01 17:34:08,720 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 6685 transitions. Word has length 25 [2021-06-01 17:34:08,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:08,721 INFO L482 AbstractCegarLoop]: Abstraction has 1675 states and 6685 transitions. [2021-06-01 17:34:08,721 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:08,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 6685 transitions. [2021-06-01 17:34:08,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:08,723 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:08,723 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:08,723 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable428 [2021-06-01 17:34:08,723 INFO L430 AbstractCegarLoop]: === Iteration 430 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:08,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:08,723 INFO L82 PathProgramCache]: Analyzing trace with hash -558312293, now seen corresponding path program 426 times [2021-06-01 17:34:08,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:08,723 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401708875] [2021-06-01 17:34:08,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:08,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:08,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:08,805 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:08,805 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401708875] [2021-06-01 17:34:08,805 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401708875] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:08,805 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:08,805 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:08,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036090994] [2021-06-01 17:34:08,805 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:08,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:08,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:08,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:08,806 INFO L87 Difference]: Start difference. First operand 1675 states and 6685 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:08,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:08,869 INFO L93 Difference]: Finished difference Result 2973 states and 11362 transitions. [2021-06-01 17:34:08,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:08,869 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:08,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:08,874 INFO L225 Difference]: With dead ends: 2973 [2021-06-01 17:34:08,875 INFO L226 Difference]: Without dead ends: 2678 [2021-06-01 17:34:08,875 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:08,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2678 states. [2021-06-01 17:34:08,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2678 to 1643. [2021-06-01 17:34:08,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1643 states, 1642 states have (on average 4.010353227771011) internal successors, (6585), 1642 states have internal predecessors, (6585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:08,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1643 states to 1643 states and 6585 transitions. [2021-06-01 17:34:08,926 INFO L78 Accepts]: Start accepts. Automaton has 1643 states and 6585 transitions. Word has length 25 [2021-06-01 17:34:08,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:08,926 INFO L482 AbstractCegarLoop]: Abstraction has 1643 states and 6585 transitions. [2021-06-01 17:34:08,926 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:08,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1643 states and 6585 transitions. [2021-06-01 17:34:08,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:08,928 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:08,928 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:08,928 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable429 [2021-06-01 17:34:08,928 INFO L430 AbstractCegarLoop]: === Iteration 431 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:08,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:08,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1904729313, now seen corresponding path program 427 times [2021-06-01 17:34:08,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:08,929 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335978680] [2021-06-01 17:34:08,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:08,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:09,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:09,018 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:09,018 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335978680] [2021-06-01 17:34:09,018 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335978680] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:09,018 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:09,018 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:09,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476476478] [2021-06-01 17:34:09,019 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:09,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:09,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:09,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:09,019 INFO L87 Difference]: Start difference. First operand 1643 states and 6585 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:09,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:09,087 INFO L93 Difference]: Finished difference Result 3704 states and 13983 transitions. [2021-06-01 17:34:09,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:09,087 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:09,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:09,094 INFO L225 Difference]: With dead ends: 3704 [2021-06-01 17:34:09,094 INFO L226 Difference]: Without dead ends: 3457 [2021-06-01 17:34:09,095 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:09,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3457 states. [2021-06-01 17:34:09,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3457 to 1687. [2021-06-01 17:34:09,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1686 states have (on average 4.005338078291815) internal successors, (6753), 1686 states have internal predecessors, (6753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:09,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 6753 transitions. [2021-06-01 17:34:09,136 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 6753 transitions. Word has length 25 [2021-06-01 17:34:09,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:09,136 INFO L482 AbstractCegarLoop]: Abstraction has 1687 states and 6753 transitions. [2021-06-01 17:34:09,137 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:09,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 6753 transitions. [2021-06-01 17:34:09,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:09,139 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:09,139 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:09,139 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable430 [2021-06-01 17:34:09,139 INFO L430 AbstractCegarLoop]: === Iteration 432 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:09,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:09,139 INFO L82 PathProgramCache]: Analyzing trace with hash 346900989, now seen corresponding path program 428 times [2021-06-01 17:34:09,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:09,139 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743750232] [2021-06-01 17:34:09,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:09,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:09,229 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:09,229 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743750232] [2021-06-01 17:34:09,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743750232] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:09,229 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:09,229 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:09,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773649729] [2021-06-01 17:34:09,229 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:09,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:09,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:09,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:09,230 INFO L87 Difference]: Start difference. First operand 1687 states and 6753 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:09,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:09,299 INFO L93 Difference]: Finished difference Result 3720 states and 14031 transitions. [2021-06-01 17:34:09,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:09,299 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:09,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:09,306 INFO L225 Difference]: With dead ends: 3720 [2021-06-01 17:34:09,306 INFO L226 Difference]: Without dead ends: 3433 [2021-06-01 17:34:09,306 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:09,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3433 states. [2021-06-01 17:34:09,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3433 to 1663. [2021-06-01 17:34:09,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1662 states have (on average 4.0102286401925396) internal successors, (6665), 1662 states have internal predecessors, (6665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:09,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 6665 transitions. [2021-06-01 17:34:09,348 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 6665 transitions. Word has length 25 [2021-06-01 17:34:09,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:09,348 INFO L482 AbstractCegarLoop]: Abstraction has 1663 states and 6665 transitions. [2021-06-01 17:34:09,348 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:09,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 6665 transitions. [2021-06-01 17:34:09,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:09,350 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:09,350 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:09,351 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable431 [2021-06-01 17:34:09,351 INFO L430 AbstractCegarLoop]: === Iteration 433 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:09,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:09,351 INFO L82 PathProgramCache]: Analyzing trace with hash 569202557, now seen corresponding path program 429 times [2021-06-01 17:34:09,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:09,351 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286117315] [2021-06-01 17:34:09,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:09,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:09,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:09,451 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:09,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286117315] [2021-06-01 17:34:09,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286117315] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:09,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:09,451 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:09,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289311305] [2021-06-01 17:34:09,451 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:09,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:09,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:09,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:09,452 INFO L87 Difference]: Start difference. First operand 1663 states and 6665 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:09,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:09,520 INFO L93 Difference]: Finished difference Result 3608 states and 13595 transitions. [2021-06-01 17:34:09,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:09,520 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:09,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:09,527 INFO L225 Difference]: With dead ends: 3608 [2021-06-01 17:34:09,527 INFO L226 Difference]: Without dead ends: 3361 [2021-06-01 17:34:09,527 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:09,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3361 states. [2021-06-01 17:34:09,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3361 to 1707. [2021-06-01 17:34:09,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1706 states have (on average 3.995896834701055) internal successors, (6817), 1706 states have internal predecessors, (6817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:09,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 6817 transitions. [2021-06-01 17:34:09,568 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 6817 transitions. Word has length 25 [2021-06-01 17:34:09,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:09,568 INFO L482 AbstractCegarLoop]: Abstraction has 1707 states and 6817 transitions. [2021-06-01 17:34:09,568 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:09,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 6817 transitions. [2021-06-01 17:34:09,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:09,571 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:09,571 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:09,571 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable432 [2021-06-01 17:34:09,571 INFO L430 AbstractCegarLoop]: === Iteration 434 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:09,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:09,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1286770557, now seen corresponding path program 430 times [2021-06-01 17:34:09,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:09,571 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997901402] [2021-06-01 17:34:09,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:09,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:09,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:09,676 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:09,676 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997901402] [2021-06-01 17:34:09,676 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997901402] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:09,676 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:09,676 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:09,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074091458] [2021-06-01 17:34:09,677 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:09,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:09,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:09,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:09,677 INFO L87 Difference]: Start difference. First operand 1707 states and 6817 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:09,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:09,734 INFO L93 Difference]: Finished difference Result 3679 states and 13834 transitions. [2021-06-01 17:34:09,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:09,734 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:09,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:09,741 INFO L225 Difference]: With dead ends: 3679 [2021-06-01 17:34:09,741 INFO L226 Difference]: Without dead ends: 3317 [2021-06-01 17:34:09,741 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:09,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3317 states. [2021-06-01 17:34:09,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3317 to 1663. [2021-06-01 17:34:09,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1662 states have (on average 3.9981949458483754) internal successors, (6645), 1662 states have internal predecessors, (6645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:09,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 6645 transitions. [2021-06-01 17:34:09,795 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 6645 transitions. Word has length 25 [2021-06-01 17:34:09,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:09,795 INFO L482 AbstractCegarLoop]: Abstraction has 1663 states and 6645 transitions. [2021-06-01 17:34:09,795 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:09,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 6645 transitions. [2021-06-01 17:34:09,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:09,797 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:09,797 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:09,798 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable433 [2021-06-01 17:34:09,798 INFO L430 AbstractCegarLoop]: === Iteration 435 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:09,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:09,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1551550171, now seen corresponding path program 431 times [2021-06-01 17:34:09,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:09,798 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083567171] [2021-06-01 17:34:09,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:09,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:09,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:09,898 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:09,898 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083567171] [2021-06-01 17:34:09,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083567171] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:09,898 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:09,898 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:09,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568414178] [2021-06-01 17:34:09,898 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:09,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:09,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:09,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:09,898 INFO L87 Difference]: Start difference. First operand 1663 states and 6645 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:09,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:09,967 INFO L93 Difference]: Finished difference Result 3596 states and 13539 transitions. [2021-06-01 17:34:09,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:09,967 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:09,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:09,974 INFO L225 Difference]: With dead ends: 3596 [2021-06-01 17:34:09,974 INFO L226 Difference]: Without dead ends: 3333 [2021-06-01 17:34:09,974 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 118.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:09,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3333 states. [2021-06-01 17:34:10,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3333 to 1715. [2021-06-01 17:34:10,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1715 states, 1714 states have (on average 3.984247374562427) internal successors, (6829), 1714 states have internal predecessors, (6829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:10,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 6829 transitions. [2021-06-01 17:34:10,015 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 6829 transitions. Word has length 25 [2021-06-01 17:34:10,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:10,015 INFO L482 AbstractCegarLoop]: Abstraction has 1715 states and 6829 transitions. [2021-06-01 17:34:10,015 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:10,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 6829 transitions. [2021-06-01 17:34:10,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:10,017 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:10,017 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:10,017 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable434 [2021-06-01 17:34:10,017 INFO L430 AbstractCegarLoop]: === Iteration 436 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:10,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:10,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1769901757, now seen corresponding path program 432 times [2021-06-01 17:34:10,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:10,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664779102] [2021-06-01 17:34:10,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:10,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:10,117 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:10,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664779102] [2021-06-01 17:34:10,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664779102] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:10,117 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:10,117 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:10,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956182192] [2021-06-01 17:34:10,117 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:10,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:10,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:10,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:10,117 INFO L87 Difference]: Start difference. First operand 1715 states and 6829 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:10,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:10,176 INFO L93 Difference]: Finished difference Result 3524 states and 13227 transitions. [2021-06-01 17:34:10,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:10,176 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:10,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:10,182 INFO L225 Difference]: With dead ends: 3524 [2021-06-01 17:34:10,182 INFO L226 Difference]: Without dead ends: 3126 [2021-06-01 17:34:10,182 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:10,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3126 states. [2021-06-01 17:34:10,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3126 to 1635. [2021-06-01 17:34:10,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1635 states, 1634 states have (on average 4.015299877600979) internal successors, (6561), 1634 states have internal predecessors, (6561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:10,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 6561 transitions. [2021-06-01 17:34:10,226 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 6561 transitions. Word has length 25 [2021-06-01 17:34:10,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:10,226 INFO L482 AbstractCegarLoop]: Abstraction has 1635 states and 6561 transitions. [2021-06-01 17:34:10,226 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:10,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 6561 transitions. [2021-06-01 17:34:10,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:10,228 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:10,228 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:10,228 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable435 [2021-06-01 17:34:10,228 INFO L430 AbstractCegarLoop]: === Iteration 437 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:10,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:10,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1634515527, now seen corresponding path program 433 times [2021-06-01 17:34:10,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:10,229 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692836807] [2021-06-01 17:34:10,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:10,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:10,314 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:10,314 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692836807] [2021-06-01 17:34:10,314 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692836807] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:10,314 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:10,314 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:10,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062123969] [2021-06-01 17:34:10,314 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:10,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:10,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:10,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:10,315 INFO L87 Difference]: Start difference. First operand 1635 states and 6561 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:10,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:10,373 INFO L93 Difference]: Finished difference Result 3478 states and 13125 transitions. [2021-06-01 17:34:10,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:10,373 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:10,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:10,379 INFO L225 Difference]: With dead ends: 3478 [2021-06-01 17:34:10,379 INFO L226 Difference]: Without dead ends: 3231 [2021-06-01 17:34:10,380 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:10,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3231 states. [2021-06-01 17:34:10,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3231 to 1675. [2021-06-01 17:34:10,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1675 states, 1674 states have (on average 4.005376344086022) internal successors, (6705), 1674 states have internal predecessors, (6705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:10,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 6705 transitions. [2021-06-01 17:34:10,419 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 6705 transitions. Word has length 25 [2021-06-01 17:34:10,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:10,419 INFO L482 AbstractCegarLoop]: Abstraction has 1675 states and 6705 transitions. [2021-06-01 17:34:10,419 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:10,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 6705 transitions. [2021-06-01 17:34:10,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:10,421 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:10,421 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:10,421 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable436 [2021-06-01 17:34:10,421 INFO L430 AbstractCegarLoop]: === Iteration 438 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:10,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:10,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1091523227, now seen corresponding path program 434 times [2021-06-01 17:34:10,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:10,422 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698644383] [2021-06-01 17:34:10,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:10,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:10,506 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:10,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698644383] [2021-06-01 17:34:10,506 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698644383] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:10,506 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:10,507 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:10,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887103856] [2021-06-01 17:34:10,507 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:10,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:10,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:10,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:10,507 INFO L87 Difference]: Start difference. First operand 1675 states and 6705 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:10,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:10,582 INFO L93 Difference]: Finished difference Result 3514 states and 13245 transitions. [2021-06-01 17:34:10,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:10,582 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:10,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:10,588 INFO L225 Difference]: With dead ends: 3514 [2021-06-01 17:34:10,589 INFO L226 Difference]: Without dead ends: 3203 [2021-06-01 17:34:10,589 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:10,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3203 states. [2021-06-01 17:34:10,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3203 to 1647. [2021-06-01 17:34:10,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1647 states, 1646 states have (on average 4.015188335358444) internal successors, (6609), 1646 states have internal predecessors, (6609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:10,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1647 states to 1647 states and 6609 transitions. [2021-06-01 17:34:10,627 INFO L78 Accepts]: Start accepts. Automaton has 1647 states and 6609 transitions. Word has length 25 [2021-06-01 17:34:10,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:10,627 INFO L482 AbstractCegarLoop]: Abstraction has 1647 states and 6609 transitions. [2021-06-01 17:34:10,627 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:10,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1647 states and 6609 transitions. [2021-06-01 17:34:10,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:10,629 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:10,630 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:10,630 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable437 [2021-06-01 17:34:10,630 INFO L430 AbstractCegarLoop]: === Iteration 439 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:10,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:10,630 INFO L82 PathProgramCache]: Analyzing trace with hash -553452901, now seen corresponding path program 435 times [2021-06-01 17:34:10,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:10,630 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228129457] [2021-06-01 17:34:10,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:10,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:10,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:10,705 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:10,705 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228129457] [2021-06-01 17:34:10,705 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228129457] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:10,705 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:10,706 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:10,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125763055] [2021-06-01 17:34:10,706 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:10,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:10,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:10,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:10,706 INFO L87 Difference]: Start difference. First operand 1647 states and 6609 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:10,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:10,768 INFO L93 Difference]: Finished difference Result 3430 states and 12917 transitions. [2021-06-01 17:34:10,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:10,768 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:10,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:10,774 INFO L225 Difference]: With dead ends: 3430 [2021-06-01 17:34:10,774 INFO L226 Difference]: Without dead ends: 3183 [2021-06-01 17:34:10,774 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:10,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3183 states. [2021-06-01 17:34:10,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3183 to 1663. [2021-06-01 17:34:10,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1662 states have (on average 4.005415162454874) internal successors, (6657), 1662 states have internal predecessors, (6657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:10,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 6657 transitions. [2021-06-01 17:34:10,813 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 6657 transitions. Word has length 25 [2021-06-01 17:34:10,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:10,814 INFO L482 AbstractCegarLoop]: Abstraction has 1663 states and 6657 transitions. [2021-06-01 17:34:10,814 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:10,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 6657 transitions. [2021-06-01 17:34:10,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:10,816 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:10,816 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:10,816 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable438 [2021-06-01 17:34:10,816 INFO L430 AbstractCegarLoop]: === Iteration 440 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:10,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:10,816 INFO L82 PathProgramCache]: Analyzing trace with hash 475851291, now seen corresponding path program 436 times [2021-06-01 17:34:10,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:10,816 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132551313] [2021-06-01 17:34:10,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:10,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:10,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:10,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132551313] [2021-06-01 17:34:10,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132551313] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:10,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:10,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:10,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340249910] [2021-06-01 17:34:10,894 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:10,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:10,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:10,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:10,894 INFO L87 Difference]: Start difference. First operand 1663 states and 6657 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:10,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:10,962 INFO L93 Difference]: Finished difference Result 3430 states and 12901 transitions. [2021-06-01 17:34:10,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:10,962 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:10,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:10,968 INFO L225 Difference]: With dead ends: 3430 [2021-06-01 17:34:10,969 INFO L226 Difference]: Without dead ends: 3167 [2021-06-01 17:34:10,969 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:10,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3167 states. [2021-06-01 17:34:11,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3167 to 1647. [2021-06-01 17:34:11,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1647 states, 1646 states have (on average 4.0103280680437425) internal successors, (6601), 1646 states have internal predecessors, (6601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:11,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1647 states to 1647 states and 6601 transitions. [2021-06-01 17:34:11,008 INFO L78 Accepts]: Start accepts. Automaton has 1647 states and 6601 transitions. Word has length 25 [2021-06-01 17:34:11,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:11,008 INFO L482 AbstractCegarLoop]: Abstraction has 1647 states and 6601 transitions. [2021-06-01 17:34:11,008 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:11,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1647 states and 6601 transitions. [2021-06-01 17:34:11,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:11,010 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:11,010 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:11,010 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable439 [2021-06-01 17:34:11,010 INFO L430 AbstractCegarLoop]: === Iteration 441 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:11,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:11,010 INFO L82 PathProgramCache]: Analyzing trace with hash -403155331, now seen corresponding path program 437 times [2021-06-01 17:34:11,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:11,010 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60710614] [2021-06-01 17:34:11,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:11,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:11,085 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:11,085 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60710614] [2021-06-01 17:34:11,085 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60710614] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:11,085 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:11,085 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:11,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073972420] [2021-06-01 17:34:11,085 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:11,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:11,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:11,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:11,085 INFO L87 Difference]: Start difference. First operand 1647 states and 6601 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:11,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:11,149 INFO L93 Difference]: Finished difference Result 3514 states and 13257 transitions. [2021-06-01 17:34:11,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:11,149 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:11,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:11,155 INFO L225 Difference]: With dead ends: 3514 [2021-06-01 17:34:11,155 INFO L226 Difference]: Without dead ends: 3231 [2021-06-01 17:34:11,155 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:11,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3231 states. [2021-06-01 17:34:11,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3231 to 1675. [2021-06-01 17:34:11,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1675 states, 1674 states have (on average 3.9958183990442055) internal successors, (6689), 1674 states have internal predecessors, (6689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:11,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 6689 transitions. [2021-06-01 17:34:11,194 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 6689 transitions. Word has length 25 [2021-06-01 17:34:11,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:11,194 INFO L482 AbstractCegarLoop]: Abstraction has 1675 states and 6689 transitions. [2021-06-01 17:34:11,194 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:11,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 6689 transitions. [2021-06-01 17:34:11,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:11,196 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:11,196 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:11,196 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable440 [2021-06-01 17:34:11,196 INFO L430 AbstractCegarLoop]: === Iteration 442 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:11,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:11,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1848474971, now seen corresponding path program 438 times [2021-06-01 17:34:11,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:11,197 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659015503] [2021-06-01 17:34:11,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:11,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:11,271 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:11,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659015503] [2021-06-01 17:34:11,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659015503] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:11,271 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:11,271 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:11,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553056830] [2021-06-01 17:34:11,272 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:11,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:11,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:11,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:11,272 INFO L87 Difference]: Start difference. First operand 1675 states and 6689 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:11,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:11,336 INFO L93 Difference]: Finished difference Result 3478 states and 13081 transitions. [2021-06-01 17:34:11,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:11,336 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:11,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:11,343 INFO L225 Difference]: With dead ends: 3478 [2021-06-01 17:34:11,343 INFO L226 Difference]: Without dead ends: 3195 [2021-06-01 17:34:11,343 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:11,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3195 states. [2021-06-01 17:34:11,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3195 to 1639. [2021-06-01 17:34:11,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1639 states, 1638 states have (on average 4.015262515262515) internal successors, (6577), 1638 states have internal predecessors, (6577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:11,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 6577 transitions. [2021-06-01 17:34:11,382 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 6577 transitions. Word has length 25 [2021-06-01 17:34:11,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:11,382 INFO L482 AbstractCegarLoop]: Abstraction has 1639 states and 6577 transitions. [2021-06-01 17:34:11,382 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:11,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 6577 transitions. [2021-06-01 17:34:11,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:11,384 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:11,384 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:11,384 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable441 [2021-06-01 17:34:11,384 INFO L430 AbstractCegarLoop]: === Iteration 443 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:11,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:11,384 INFO L82 PathProgramCache]: Analyzing trace with hash -2115417573, now seen corresponding path program 439 times [2021-06-01 17:34:11,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:11,384 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086008861] [2021-06-01 17:34:11,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:11,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:11,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:11,469 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:11,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086008861] [2021-06-01 17:34:11,469 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086008861] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:11,469 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:11,469 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:11,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26678286] [2021-06-01 17:34:11,469 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:11,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:11,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:11,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:11,469 INFO L87 Difference]: Start difference. First operand 1639 states and 6577 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:11,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:11,520 INFO L93 Difference]: Finished difference Result 3466 states and 13081 transitions. [2021-06-01 17:34:11,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:11,520 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:11,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:11,527 INFO L225 Difference]: With dead ends: 3466 [2021-06-01 17:34:11,527 INFO L226 Difference]: Without dead ends: 3219 [2021-06-01 17:34:11,527 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 90.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:11,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2021-06-01 17:34:11,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 1679. [2021-06-01 17:34:11,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1679 states, 1678 states have (on average 4.005363528009535) internal successors, (6721), 1678 states have internal predecessors, (6721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:11,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1679 states to 1679 states and 6721 transitions. [2021-06-01 17:34:11,566 INFO L78 Accepts]: Start accepts. Automaton has 1679 states and 6721 transitions. Word has length 25 [2021-06-01 17:34:11,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:11,566 INFO L482 AbstractCegarLoop]: Abstraction has 1679 states and 6721 transitions. [2021-06-01 17:34:11,566 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:11,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1679 states and 6721 transitions. [2021-06-01 17:34:11,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:11,568 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:11,568 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:11,568 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable442 [2021-06-01 17:34:11,568 INFO L430 AbstractCegarLoop]: === Iteration 444 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:11,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:11,569 INFO L82 PathProgramCache]: Analyzing trace with hash 610621181, now seen corresponding path program 440 times [2021-06-01 17:34:11,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:11,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712127377] [2021-06-01 17:34:11,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:11,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:11,655 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:11,655 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712127377] [2021-06-01 17:34:11,655 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712127377] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:11,655 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:11,655 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:11,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258545415] [2021-06-01 17:34:11,655 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:11,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:11,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:11,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:11,655 INFO L87 Difference]: Start difference. First operand 1679 states and 6721 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:11,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:11,719 INFO L93 Difference]: Finished difference Result 3502 states and 13201 transitions. [2021-06-01 17:34:11,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:11,719 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:11,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:11,726 INFO L225 Difference]: With dead ends: 3502 [2021-06-01 17:34:11,726 INFO L226 Difference]: Without dead ends: 3191 [2021-06-01 17:34:11,726 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:11,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3191 states. [2021-06-01 17:34:11,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3191 to 1651. [2021-06-01 17:34:11,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1651 states, 1650 states have (on average 4.012727272727273) internal successors, (6621), 1650 states have internal predecessors, (6621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:11,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 6621 transitions. [2021-06-01 17:34:11,765 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 6621 transitions. Word has length 25 [2021-06-01 17:34:11,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:11,765 INFO L482 AbstractCegarLoop]: Abstraction has 1651 states and 6621 transitions. [2021-06-01 17:34:11,765 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:11,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 6621 transitions. [2021-06-01 17:34:11,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:11,767 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:11,767 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:11,767 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable443 [2021-06-01 17:34:11,767 INFO L430 AbstractCegarLoop]: === Iteration 445 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:11,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:11,768 INFO L82 PathProgramCache]: Analyzing trace with hash 491303451, now seen corresponding path program 441 times [2021-06-01 17:34:11,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:11,768 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768803337] [2021-06-01 17:34:11,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:11,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:11,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:11,844 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:11,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768803337] [2021-06-01 17:34:11,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768803337] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:11,844 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:11,844 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:11,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569029918] [2021-06-01 17:34:11,844 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:11,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:11,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:11,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:11,844 INFO L87 Difference]: Start difference. First operand 1651 states and 6621 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:11,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:11,895 INFO L93 Difference]: Finished difference Result 3386 states and 12773 transitions. [2021-06-01 17:34:11,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:11,895 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:11,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:11,902 INFO L225 Difference]: With dead ends: 3386 [2021-06-01 17:34:11,902 INFO L226 Difference]: Without dead ends: 3139 [2021-06-01 17:34:11,902 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:11,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2021-06-01 17:34:11,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 1675. [2021-06-01 17:34:11,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1675 states, 1674 states have (on average 4.000597371565114) internal successors, (6697), 1674 states have internal predecessors, (6697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:11,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 6697 transitions. [2021-06-01 17:34:11,940 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 6697 transitions. Word has length 25 [2021-06-01 17:34:11,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:11,940 INFO L482 AbstractCegarLoop]: Abstraction has 1675 states and 6697 transitions. [2021-06-01 17:34:11,940 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:11,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 6697 transitions. [2021-06-01 17:34:11,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:11,943 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:11,943 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:11,943 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable444 [2021-06-01 17:34:11,943 INFO L430 AbstractCegarLoop]: === Iteration 446 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:11,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:11,943 INFO L82 PathProgramCache]: Analyzing trace with hash -2102160997, now seen corresponding path program 442 times [2021-06-01 17:34:11,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:11,943 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702882248] [2021-06-01 17:34:11,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:11,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:12,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:12,023 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:12,023 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702882248] [2021-06-01 17:34:12,023 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702882248] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:12,023 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:12,023 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:12,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424785083] [2021-06-01 17:34:12,023 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:12,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:12,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:12,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:12,023 INFO L87 Difference]: Start difference. First operand 1675 states and 6697 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:12,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:12,091 INFO L93 Difference]: Finished difference Result 3210 states and 12196 transitions. [2021-06-01 17:34:12,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:12,091 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:12,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:12,097 INFO L225 Difference]: With dead ends: 3210 [2021-06-01 17:34:12,097 INFO L226 Difference]: Without dead ends: 2923 [2021-06-01 17:34:12,097 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:12,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2021-06-01 17:34:12,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 1651. [2021-06-01 17:34:12,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1651 states, 1650 states have (on average 4.005454545454546) internal successors, (6609), 1650 states have internal predecessors, (6609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:12,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 6609 transitions. [2021-06-01 17:34:12,148 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 6609 transitions. Word has length 25 [2021-06-01 17:34:12,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:12,148 INFO L482 AbstractCegarLoop]: Abstraction has 1651 states and 6609 transitions. [2021-06-01 17:34:12,148 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:12,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 6609 transitions. [2021-06-01 17:34:12,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:12,151 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:12,151 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:12,151 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable445 [2021-06-01 17:34:12,151 INFO L430 AbstractCegarLoop]: === Iteration 447 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:12,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:12,151 INFO L82 PathProgramCache]: Analyzing trace with hash 641601021, now seen corresponding path program 443 times [2021-06-01 17:34:12,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:12,151 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445839012] [2021-06-01 17:34:12,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:12,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:12,225 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:12,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445839012] [2021-06-01 17:34:12,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445839012] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:12,225 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:12,225 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:12,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056083046] [2021-06-01 17:34:12,225 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:12,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:12,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:12,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:12,225 INFO L87 Difference]: Start difference. First operand 1651 states and 6609 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:12,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:12,289 INFO L93 Difference]: Finished difference Result 3434 states and 12965 transitions. [2021-06-01 17:34:12,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:12,290 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:12,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:12,296 INFO L225 Difference]: With dead ends: 3434 [2021-06-01 17:34:12,296 INFO L226 Difference]: Without dead ends: 3151 [2021-06-01 17:34:12,296 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:12,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3151 states. [2021-06-01 17:34:12,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3151 to 1687. [2021-06-01 17:34:12,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1686 states have (on average 3.991103202846975) internal successors, (6729), 1686 states have internal predecessors, (6729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:12,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 6729 transitions. [2021-06-01 17:34:12,334 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 6729 transitions. Word has length 25 [2021-06-01 17:34:12,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:12,335 INFO L482 AbstractCegarLoop]: Abstraction has 1687 states and 6729 transitions. [2021-06-01 17:34:12,335 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:12,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 6729 transitions. [2021-06-01 17:34:12,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:12,337 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:12,337 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:12,337 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable446 [2021-06-01 17:34:12,337 INFO L430 AbstractCegarLoop]: === Iteration 448 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:12,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:12,337 INFO L82 PathProgramCache]: Analyzing trace with hash -750543525, now seen corresponding path program 444 times [2021-06-01 17:34:12,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:12,337 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576867551] [2021-06-01 17:34:12,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:12,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:12,412 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:12,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576867551] [2021-06-01 17:34:12,412 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576867551] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:12,412 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:12,412 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:12,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673869696] [2021-06-01 17:34:12,412 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:12,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:12,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:12,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:12,412 INFO L87 Difference]: Start difference. First operand 1687 states and 6729 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:12,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:12,479 INFO L93 Difference]: Finished difference Result 3222 states and 12228 transitions. [2021-06-01 17:34:12,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:12,479 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:12,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:12,485 INFO L225 Difference]: With dead ends: 3222 [2021-06-01 17:34:12,485 INFO L226 Difference]: Without dead ends: 2911 [2021-06-01 17:34:12,485 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:12,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2021-06-01 17:34:12,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 1639. [2021-06-01 17:34:12,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1639 states, 1638 states have (on average 4.012820512820513) internal successors, (6573), 1638 states have internal predecessors, (6573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:12,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 6573 transitions. [2021-06-01 17:34:12,522 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 6573 transitions. Word has length 25 [2021-06-01 17:34:12,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:12,522 INFO L482 AbstractCegarLoop]: Abstraction has 1639 states and 6573 transitions. [2021-06-01 17:34:12,522 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:12,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 6573 transitions. [2021-06-01 17:34:12,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:12,525 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:12,525 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:12,525 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable447 [2021-06-01 17:34:12,525 INFO L430 AbstractCegarLoop]: === Iteration 449 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:12,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:12,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1727412611, now seen corresponding path program 445 times [2021-06-01 17:34:12,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:12,526 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507827705] [2021-06-01 17:34:12,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:12,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:12,605 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:12,606 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507827705] [2021-06-01 17:34:12,606 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507827705] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:12,606 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:12,606 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:12,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911572900] [2021-06-01 17:34:12,606 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:12,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:12,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:12,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:12,606 INFO L87 Difference]: Start difference. First operand 1639 states and 6573 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:12,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:12,655 INFO L93 Difference]: Finished difference Result 3286 states and 12349 transitions. [2021-06-01 17:34:12,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:12,655 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:12,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:12,661 INFO L225 Difference]: With dead ends: 3286 [2021-06-01 17:34:12,661 INFO L226 Difference]: Without dead ends: 3039 [2021-06-01 17:34:12,662 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:12,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3039 states. [2021-06-01 17:34:12,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3039 to 1663. [2021-06-01 17:34:12,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1662 states have (on average 4.005415162454874) internal successors, (6657), 1662 states have internal predecessors, (6657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:12,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 6657 transitions. [2021-06-01 17:34:12,700 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 6657 transitions. Word has length 25 [2021-06-01 17:34:12,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:12,700 INFO L482 AbstractCegarLoop]: Abstraction has 1663 states and 6657 transitions. [2021-06-01 17:34:12,700 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:12,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 6657 transitions. [2021-06-01 17:34:12,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:12,702 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:12,703 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:12,703 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable448 [2021-06-01 17:34:12,703 INFO L430 AbstractCegarLoop]: === Iteration 450 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:12,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:12,703 INFO L82 PathProgramCache]: Analyzing trace with hash -698108419, now seen corresponding path program 446 times [2021-06-01 17:34:12,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:12,703 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513292380] [2021-06-01 17:34:12,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:12,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:12,778 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:12,778 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513292380] [2021-06-01 17:34:12,778 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513292380] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:12,778 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:12,778 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:12,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595110390] [2021-06-01 17:34:12,778 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:12,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:12,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:12,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:12,778 INFO L87 Difference]: Start difference. First operand 1663 states and 6657 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:12,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:12,842 INFO L93 Difference]: Finished difference Result 3286 states and 12333 transitions. [2021-06-01 17:34:12,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:12,842 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:12,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:12,848 INFO L225 Difference]: With dead ends: 3286 [2021-06-01 17:34:12,848 INFO L226 Difference]: Without dead ends: 3023 [2021-06-01 17:34:12,848 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:12,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3023 states. [2021-06-01 17:34:12,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3023 to 1647. [2021-06-01 17:34:12,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1647 states, 1646 states have (on average 4.0103280680437425) internal successors, (6601), 1646 states have internal predecessors, (6601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:12,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1647 states to 1647 states and 6601 transitions. [2021-06-01 17:34:12,885 INFO L78 Accepts]: Start accepts. Automaton has 1647 states and 6601 transitions. Word has length 25 [2021-06-01 17:34:12,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:12,885 INFO L482 AbstractCegarLoop]: Abstraction has 1647 states and 6601 transitions. [2021-06-01 17:34:12,885 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:12,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1647 states and 6601 transitions. [2021-06-01 17:34:12,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:12,888 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:12,888 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:12,888 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable449 [2021-06-01 17:34:12,888 INFO L430 AbstractCegarLoop]: === Iteration 451 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:12,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:12,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1720757723, now seen corresponding path program 447 times [2021-06-01 17:34:12,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:12,888 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58715237] [2021-06-01 17:34:12,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:12,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:12,977 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:12,977 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58715237] [2021-06-01 17:34:12,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58715237] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:12,977 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:12,977 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:12,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728710214] [2021-06-01 17:34:12,978 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:12,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:12,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:12,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:12,978 INFO L87 Difference]: Start difference. First operand 1647 states and 6601 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:13,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:13,030 INFO L93 Difference]: Finished difference Result 3230 states and 12145 transitions. [2021-06-01 17:34:13,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:13,030 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:13,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:13,036 INFO L225 Difference]: With dead ends: 3230 [2021-06-01 17:34:13,036 INFO L226 Difference]: Without dead ends: 2983 [2021-06-01 17:34:13,036 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:13,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2021-06-01 17:34:13,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1671. [2021-06-01 17:34:13,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1671 states, 1670 states have (on average 3.998203592814371) internal successors, (6677), 1670 states have internal predecessors, (6677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:13,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 6677 transitions. [2021-06-01 17:34:13,073 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 6677 transitions. Word has length 25 [2021-06-01 17:34:13,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:13,073 INFO L482 AbstractCegarLoop]: Abstraction has 1671 states and 6677 transitions. [2021-06-01 17:34:13,073 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:13,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 6677 transitions. [2021-06-01 17:34:13,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:13,076 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:13,076 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:13,076 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable450 [2021-06-01 17:34:13,076 INFO L430 AbstractCegarLoop]: === Iteration 452 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:13,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:13,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1711904253, now seen corresponding path program 448 times [2021-06-01 17:34:13,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:13,076 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010725213] [2021-06-01 17:34:13,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:13,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:13,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:13,152 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:13,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010725213] [2021-06-01 17:34:13,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010725213] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:13,152 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:13,152 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:13,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408055977] [2021-06-01 17:34:13,152 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:13,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:13,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:13,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:13,153 INFO L87 Difference]: Start difference. First operand 1671 states and 6677 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:13,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:13,225 INFO L93 Difference]: Finished difference Result 3054 states and 11568 transitions. [2021-06-01 17:34:13,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:13,225 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:13,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:13,230 INFO L225 Difference]: With dead ends: 3054 [2021-06-01 17:34:13,231 INFO L226 Difference]: Without dead ends: 2767 [2021-06-01 17:34:13,231 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:13,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2767 states. [2021-06-01 17:34:13,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2767 to 1647. [2021-06-01 17:34:13,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1647 states, 1646 states have (on average 4.00546780072904) internal successors, (6593), 1646 states have internal predecessors, (6593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:13,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1647 states to 1647 states and 6593 transitions. [2021-06-01 17:34:13,267 INFO L78 Accepts]: Start accepts. Automaton has 1647 states and 6593 transitions. Word has length 25 [2021-06-01 17:34:13,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:13,267 INFO L482 AbstractCegarLoop]: Abstraction has 1647 states and 6593 transitions. [2021-06-01 17:34:13,267 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:13,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1647 states and 6593 transitions. [2021-06-01 17:34:13,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:13,269 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:13,269 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:13,269 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable451 [2021-06-01 17:34:13,269 INFO L430 AbstractCegarLoop]: === Iteration 453 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:13,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:13,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1936411267, now seen corresponding path program 449 times [2021-06-01 17:34:13,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:13,269 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003842565] [2021-06-01 17:34:13,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:13,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:13,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:13,345 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:13,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003842565] [2021-06-01 17:34:13,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003842565] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:13,345 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:13,345 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:13,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530269674] [2021-06-01 17:34:13,345 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:13,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:13,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:13,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:13,346 INFO L87 Difference]: Start difference. First operand 1647 states and 6593 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:13,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:13,410 INFO L93 Difference]: Finished difference Result 3038 states and 11512 transitions. [2021-06-01 17:34:13,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:13,410 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:13,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:13,416 INFO L225 Difference]: With dead ends: 3038 [2021-06-01 17:34:13,416 INFO L226 Difference]: Without dead ends: 2791 [2021-06-01 17:34:13,416 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:13,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2791 states. [2021-06-01 17:34:13,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2791 to 1671. [2021-06-01 17:34:13,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1671 states, 1670 states have (on average 3.9934131736526948) internal successors, (6669), 1670 states have internal predecessors, (6669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:13,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 6669 transitions. [2021-06-01 17:34:13,452 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 6669 transitions. Word has length 25 [2021-06-01 17:34:13,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:13,452 INFO L482 AbstractCegarLoop]: Abstraction has 1671 states and 6669 transitions. [2021-06-01 17:34:13,452 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:13,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 6669 transitions. [2021-06-01 17:34:13,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:13,455 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:13,455 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:13,455 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable452 [2021-06-01 17:34:13,455 INFO L430 AbstractCegarLoop]: === Iteration 454 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:13,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:13,455 INFO L82 PathProgramCache]: Analyzing trace with hash 315219035, now seen corresponding path program 450 times [2021-06-01 17:34:13,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:13,455 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204465670] [2021-06-01 17:34:13,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:13,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:13,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:13,559 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:13,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204465670] [2021-06-01 17:34:13,559 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204465670] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:13,559 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:13,559 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:13,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918474419] [2021-06-01 17:34:13,559 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:13,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:13,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:13,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:13,560 INFO L87 Difference]: Start difference. First operand 1671 states and 6669 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:13,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:13,639 INFO L93 Difference]: Finished difference Result 2790 states and 10659 transitions. [2021-06-01 17:34:13,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:13,639 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:13,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:13,645 INFO L225 Difference]: With dead ends: 2790 [2021-06-01 17:34:13,645 INFO L226 Difference]: Without dead ends: 2495 [2021-06-01 17:34:13,646 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 130.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:13,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2021-06-01 17:34:13,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 1639. [2021-06-01 17:34:13,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1639 states, 1638 states have (on average 4.01037851037851) internal successors, (6569), 1638 states have internal predecessors, (6569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:13,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 6569 transitions. [2021-06-01 17:34:13,695 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 6569 transitions. Word has length 25 [2021-06-01 17:34:13,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:13,695 INFO L482 AbstractCegarLoop]: Abstraction has 1639 states and 6569 transitions. [2021-06-01 17:34:13,695 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:13,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 6569 transitions. [2021-06-01 17:34:13,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:13,698 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:13,698 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:13,698 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable453 [2021-06-01 17:34:13,698 INFO L430 AbstractCegarLoop]: === Iteration 455 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:13,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:13,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1331736927, now seen corresponding path program 451 times [2021-06-01 17:34:13,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:13,698 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739079040] [2021-06-01 17:34:13,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:13,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:13,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:13,793 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:13,793 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739079040] [2021-06-01 17:34:13,793 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739079040] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:13,793 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:13,793 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:13,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235177023] [2021-06-01 17:34:13,794 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:13,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:13,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:13,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:13,794 INFO L87 Difference]: Start difference. First operand 1639 states and 6569 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:13,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:13,860 INFO L93 Difference]: Finished difference Result 3138 states and 11940 transitions. [2021-06-01 17:34:13,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:13,860 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:13,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:13,866 INFO L225 Difference]: With dead ends: 3138 [2021-06-01 17:34:13,866 INFO L226 Difference]: Without dead ends: 2855 [2021-06-01 17:34:13,866 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:13,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2855 states. [2021-06-01 17:34:13,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2855 to 1679. [2021-06-01 17:34:13,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1679 states, 1678 states have (on average 4.000595947556615) internal successors, (6713), 1678 states have internal predecessors, (6713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:13,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1679 states to 1679 states and 6713 transitions. [2021-06-01 17:34:13,904 INFO L78 Accepts]: Start accepts. Automaton has 1679 states and 6713 transitions. Word has length 25 [2021-06-01 17:34:13,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:13,904 INFO L482 AbstractCegarLoop]: Abstraction has 1679 states and 6713 transitions. [2021-06-01 17:34:13,904 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:13,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1679 states and 6713 transitions. [2021-06-01 17:34:13,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:13,906 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:13,906 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:13,906 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable454 [2021-06-01 17:34:13,906 INFO L430 AbstractCegarLoop]: === Iteration 456 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:13,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:13,906 INFO L82 PathProgramCache]: Analyzing trace with hash -711600067, now seen corresponding path program 452 times [2021-06-01 17:34:13,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:13,907 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381436209] [2021-06-01 17:34:13,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:13,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:13,982 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:13,982 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381436209] [2021-06-01 17:34:13,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381436209] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:13,982 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:13,982 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:13,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391654684] [2021-06-01 17:34:13,982 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:13,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:13,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:13,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:13,983 INFO L87 Difference]: Start difference. First operand 1679 states and 6713 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:14,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:14,052 INFO L93 Difference]: Finished difference Result 3102 states and 11764 transitions. [2021-06-01 17:34:14,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:14,053 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:14,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:14,058 INFO L225 Difference]: With dead ends: 3102 [2021-06-01 17:34:14,058 INFO L226 Difference]: Without dead ends: 2827 [2021-06-01 17:34:14,058 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:14,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states. [2021-06-01 17:34:14,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 1651. [2021-06-01 17:34:14,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1651 states, 1650 states have (on average 4.007878787878788) internal successors, (6613), 1650 states have internal predecessors, (6613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:14,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 6613 transitions. [2021-06-01 17:34:14,095 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 6613 transitions. Word has length 25 [2021-06-01 17:34:14,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:14,095 INFO L482 AbstractCegarLoop]: Abstraction has 1651 states and 6613 transitions. [2021-06-01 17:34:14,095 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:14,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 6613 transitions. [2021-06-01 17:34:14,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:14,097 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:14,097 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:14,097 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable455 [2021-06-01 17:34:14,097 INFO L430 AbstractCegarLoop]: === Iteration 457 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:14,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:14,097 INFO L82 PathProgramCache]: Analyzing trace with hash 484939965, now seen corresponding path program 453 times [2021-06-01 17:34:14,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:14,097 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830895726] [2021-06-01 17:34:14,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:14,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:14,172 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:14,172 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830895726] [2021-06-01 17:34:14,172 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830895726] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:14,172 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:14,172 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:14,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000146134] [2021-06-01 17:34:14,172 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:14,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:14,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:14,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:14,172 INFO L87 Difference]: Start difference. First operand 1651 states and 6613 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:14,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:14,235 INFO L93 Difference]: Finished difference Result 3018 states and 11460 transitions. [2021-06-01 17:34:14,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:14,236 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:14,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:14,241 INFO L225 Difference]: With dead ends: 3018 [2021-06-01 17:34:14,241 INFO L226 Difference]: Without dead ends: 2735 [2021-06-01 17:34:14,241 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:14,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2735 states. [2021-06-01 17:34:14,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2735 to 1687. [2021-06-01 17:34:14,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1686 states have (on average 3.993475682087782) internal successors, (6733), 1686 states have internal predecessors, (6733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:14,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 6733 transitions. [2021-06-01 17:34:14,277 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 6733 transitions. Word has length 25 [2021-06-01 17:34:14,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:14,277 INFO L482 AbstractCegarLoop]: Abstraction has 1687 states and 6733 transitions. [2021-06-01 17:34:14,277 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:14,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 6733 transitions. [2021-06-01 17:34:14,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:14,279 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:14,279 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:14,279 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable456 [2021-06-01 17:34:14,279 INFO L430 AbstractCegarLoop]: === Iteration 458 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:14,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:14,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1677406397, now seen corresponding path program 454 times [2021-06-01 17:34:14,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:14,280 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418795752] [2021-06-01 17:34:14,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:14,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:14,355 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:14,355 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418795752] [2021-06-01 17:34:14,355 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418795752] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:14,355 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:14,355 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:14,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41193463] [2021-06-01 17:34:14,355 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:14,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:14,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:14,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:14,355 INFO L87 Difference]: Start difference. First operand 1687 states and 6733 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:14,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:14,425 INFO L93 Difference]: Finished difference Result 2806 states and 10723 transitions. [2021-06-01 17:34:14,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:14,425 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:14,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:14,430 INFO L225 Difference]: With dead ends: 2806 [2021-06-01 17:34:14,430 INFO L226 Difference]: Without dead ends: 2507 [2021-06-01 17:34:14,430 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:14,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2021-06-01 17:34:14,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 1651. [2021-06-01 17:34:14,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1651 states, 1650 states have (on average 4.000606060606061) internal successors, (6601), 1650 states have internal predecessors, (6601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:14,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 6601 transitions. [2021-06-01 17:34:14,464 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 6601 transitions. Word has length 25 [2021-06-01 17:34:14,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:14,465 INFO L482 AbstractCegarLoop]: Abstraction has 1651 states and 6601 transitions. [2021-06-01 17:34:14,465 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:14,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 6601 transitions. [2021-06-01 17:34:14,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:14,467 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:14,467 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:14,467 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable457 [2021-06-01 17:34:14,467 INFO L430 AbstractCegarLoop]: === Iteration 459 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:14,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:14,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1467287579, now seen corresponding path program 455 times [2021-06-01 17:34:14,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:14,467 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077492220] [2021-06-01 17:34:14,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:14,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:14,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:14,543 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:14,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077492220] [2021-06-01 17:34:14,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077492220] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:14,543 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:14,543 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:14,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203795555] [2021-06-01 17:34:14,543 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:14,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:14,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:14,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:14,544 INFO L87 Difference]: Start difference. First operand 1651 states and 6601 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:14,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:14,613 INFO L93 Difference]: Finished difference Result 2698 states and 10315 transitions. [2021-06-01 17:34:14,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:14,614 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:14,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:14,618 INFO L225 Difference]: With dead ends: 2698 [2021-06-01 17:34:14,618 INFO L226 Difference]: Without dead ends: 2451 [2021-06-01 17:34:14,619 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:14,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2451 states. [2021-06-01 17:34:14,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2451 to 1675. [2021-06-01 17:34:14,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1675 states, 1674 states have (on average 3.9886499402628437) internal successors, (6677), 1674 states have internal predecessors, (6677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:14,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 6677 transitions. [2021-06-01 17:34:14,652 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 6677 transitions. Word has length 25 [2021-06-01 17:34:14,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:14,652 INFO L482 AbstractCegarLoop]: Abstraction has 1675 states and 6677 transitions. [2021-06-01 17:34:14,652 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:14,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 6677 transitions. [2021-06-01 17:34:14,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:14,654 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:14,655 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:14,655 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable458 [2021-06-01 17:34:14,655 INFO L430 AbstractCegarLoop]: === Iteration 460 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:14,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:14,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1746617091, now seen corresponding path program 456 times [2021-06-01 17:34:14,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:14,655 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12725148] [2021-06-01 17:34:14,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:14,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:14,739 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:14,739 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12725148] [2021-06-01 17:34:14,739 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12725148] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:14,739 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:14,739 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:14,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690126196] [2021-06-01 17:34:14,739 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:14,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:14,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:14,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:14,740 INFO L87 Difference]: Start difference. First operand 1675 states and 6677 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:14,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:14,800 INFO L93 Difference]: Finished difference Result 2450 states and 9462 transitions. [2021-06-01 17:34:14,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:14,801 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:14,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:14,805 INFO L225 Difference]: With dead ends: 2450 [2021-06-01 17:34:14,805 INFO L226 Difference]: Without dead ends: 2147 [2021-06-01 17:34:14,805 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:14,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2147 states. [2021-06-01 17:34:14,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2147 to 1635. [2021-06-01 17:34:14,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1635 states, 1634 states have (on average 4.0140758873929006) internal successors, (6559), 1634 states have internal predecessors, (6559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:14,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 6559 transitions. [2021-06-01 17:34:14,837 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 6559 transitions. Word has length 25 [2021-06-01 17:34:14,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:14,837 INFO L482 AbstractCegarLoop]: Abstraction has 1635 states and 6559 transitions. [2021-06-01 17:34:14,837 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:14,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 6559 transitions. [2021-06-01 17:34:14,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:14,839 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:14,839 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:14,839 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable459 [2021-06-01 17:34:14,839 INFO L430 AbstractCegarLoop]: === Iteration 461 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:14,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:14,839 INFO L82 PathProgramCache]: Analyzing trace with hash -636660159, now seen corresponding path program 457 times [2021-06-01 17:34:14,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:14,839 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147136828] [2021-06-01 17:34:14,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:14,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:14,913 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:14,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147136828] [2021-06-01 17:34:14,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147136828] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:14,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:14,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:14,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800824042] [2021-06-01 17:34:14,913 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:14,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:14,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:14,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:14,913 INFO L87 Difference]: Start difference. First operand 1635 states and 6559 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:14,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:14,978 INFO L93 Difference]: Finished difference Result 3865 states and 14728 transitions. [2021-06-01 17:34:14,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:14,978 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:14,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:14,985 INFO L225 Difference]: With dead ends: 3865 [2021-06-01 17:34:14,985 INFO L226 Difference]: Without dead ends: 3582 [2021-06-01 17:34:14,986 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:15,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3582 states. [2021-06-01 17:34:15,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3582 to 1685. [2021-06-01 17:34:15,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1685 states, 1684 states have (on average 4.010688836104513) internal successors, (6754), 1684 states have internal predecessors, (6754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:15,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1685 states to 1685 states and 6754 transitions. [2021-06-01 17:34:15,028 INFO L78 Accepts]: Start accepts. Automaton has 1685 states and 6754 transitions. Word has length 25 [2021-06-01 17:34:15,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:15,029 INFO L482 AbstractCegarLoop]: Abstraction has 1685 states and 6754 transitions. [2021-06-01 17:34:15,029 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:15,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1685 states and 6754 transitions. [2021-06-01 17:34:15,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:15,031 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:15,031 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:15,031 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable460 [2021-06-01 17:34:15,031 INFO L430 AbstractCegarLoop]: === Iteration 462 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:15,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:15,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1614970143, now seen corresponding path program 458 times [2021-06-01 17:34:15,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:15,031 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210772060] [2021-06-01 17:34:15,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:15,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:15,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:15,105 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:15,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210772060] [2021-06-01 17:34:15,105 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210772060] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:15,105 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:15,105 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:15,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072821140] [2021-06-01 17:34:15,105 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:15,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:15,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:15,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:15,106 INFO L87 Difference]: Start difference. First operand 1685 states and 6754 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:15,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:15,173 INFO L93 Difference]: Finished difference Result 3829 states and 14552 transitions. [2021-06-01 17:34:15,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:15,173 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:15,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:15,180 INFO L225 Difference]: With dead ends: 3829 [2021-06-01 17:34:15,181 INFO L226 Difference]: Without dead ends: 3554 [2021-06-01 17:34:15,181 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:15,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3554 states. [2021-06-01 17:34:15,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3554 to 1657. [2021-06-01 17:34:15,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1657 states, 1656 states have (on average 4.018115942028985) internal successors, (6654), 1656 states have internal predecessors, (6654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:15,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1657 states to 1657 states and 6654 transitions. [2021-06-01 17:34:15,222 INFO L78 Accepts]: Start accepts. Automaton has 1657 states and 6654 transitions. Word has length 25 [2021-06-01 17:34:15,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:15,222 INFO L482 AbstractCegarLoop]: Abstraction has 1657 states and 6654 transitions. [2021-06-01 17:34:15,222 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:15,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1657 states and 6654 transitions. [2021-06-01 17:34:15,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:15,224 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:15,224 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:15,224 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable461 [2021-06-01 17:34:15,224 INFO L430 AbstractCegarLoop]: === Iteration 463 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:15,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:15,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1483457121, now seen corresponding path program 459 times [2021-06-01 17:34:15,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:15,224 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499937241] [2021-06-01 17:34:15,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:15,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:15,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:15,298 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:15,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499937241] [2021-06-01 17:34:15,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499937241] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:15,298 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:15,298 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:15,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797350333] [2021-06-01 17:34:15,298 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:15,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:15,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:15,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:15,299 INFO L87 Difference]: Start difference. First operand 1657 states and 6654 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:15,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:15,363 INFO L93 Difference]: Finished difference Result 3889 states and 14828 transitions. [2021-06-01 17:34:15,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:15,363 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:15,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:15,370 INFO L225 Difference]: With dead ends: 3889 [2021-06-01 17:34:15,370 INFO L226 Difference]: Without dead ends: 3606 [2021-06-01 17:34:15,370 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:15,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3606 states. [2021-06-01 17:34:15,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3606 to 1693. [2021-06-01 17:34:15,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1692 states have (on average 4.00354609929078) internal successors, (6774), 1692 states have internal predecessors, (6774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:15,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 6774 transitions. [2021-06-01 17:34:15,412 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 6774 transitions. Word has length 25 [2021-06-01 17:34:15,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:15,412 INFO L482 AbstractCegarLoop]: Abstraction has 1693 states and 6774 transitions. [2021-06-01 17:34:15,412 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:15,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 6774 transitions. [2021-06-01 17:34:15,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:15,414 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:15,414 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:15,415 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable462 [2021-06-01 17:34:15,415 INFO L430 AbstractCegarLoop]: === Iteration 464 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:15,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:15,415 INFO L82 PathProgramCache]: Analyzing trace with hash -290990689, now seen corresponding path program 460 times [2021-06-01 17:34:15,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:15,415 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254369489] [2021-06-01 17:34:15,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:15,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:15,488 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:15,488 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254369489] [2021-06-01 17:34:15,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254369489] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:15,488 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:15,488 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:15,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373365504] [2021-06-01 17:34:15,488 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:15,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:15,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:15,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:15,489 INFO L87 Difference]: Start difference. First operand 1693 states and 6774 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:15,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:15,557 INFO L93 Difference]: Finished difference Result 3869 states and 14716 transitions. [2021-06-01 17:34:15,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:15,557 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:15,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:15,564 INFO L225 Difference]: With dead ends: 3869 [2021-06-01 17:34:15,565 INFO L226 Difference]: Without dead ends: 3570 [2021-06-01 17:34:15,565 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:15,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3570 states. [2021-06-01 17:34:15,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3570 to 1657. [2021-06-01 17:34:15,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1657 states, 1656 states have (on average 4.010869565217392) internal successors, (6642), 1656 states have internal predecessors, (6642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:15,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1657 states to 1657 states and 6642 transitions. [2021-06-01 17:34:15,606 INFO L78 Accepts]: Start accepts. Automaton has 1657 states and 6642 transitions. Word has length 25 [2021-06-01 17:34:15,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:15,606 INFO L482 AbstractCegarLoop]: Abstraction has 1657 states and 6642 transitions. [2021-06-01 17:34:15,606 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:15,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1657 states and 6642 transitions. [2021-06-01 17:34:15,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:15,608 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:15,608 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:15,608 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable463 [2021-06-01 17:34:15,608 INFO L430 AbstractCegarLoop]: === Iteration 465 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:15,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:15,609 INFO L82 PathProgramCache]: Analyzing trace with hash -501109507, now seen corresponding path program 461 times [2021-06-01 17:34:15,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:15,609 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875010592] [2021-06-01 17:34:15,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:15,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:15,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:15,683 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:15,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875010592] [2021-06-01 17:34:15,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875010592] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:15,683 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:15,683 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:15,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453805143] [2021-06-01 17:34:15,683 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:15,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:15,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:15,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:15,684 INFO L87 Difference]: Start difference. First operand 1657 states and 6642 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:15,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:15,746 INFO L93 Difference]: Finished difference Result 3805 states and 14464 transitions. [2021-06-01 17:34:15,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:15,746 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:15,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:15,753 INFO L225 Difference]: With dead ends: 3805 [2021-06-01 17:34:15,754 INFO L226 Difference]: Without dead ends: 3558 [2021-06-01 17:34:15,754 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:15,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3558 states. [2021-06-01 17:34:15,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3558 to 1681. [2021-06-01 17:34:15,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1681 states, 1680 states have (on average 3.998809523809524) internal successors, (6718), 1680 states have internal predecessors, (6718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:15,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1681 states to 1681 states and 6718 transitions. [2021-06-01 17:34:15,795 INFO L78 Accepts]: Start accepts. Automaton has 1681 states and 6718 transitions. Word has length 25 [2021-06-01 17:34:15,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:15,795 INFO L482 AbstractCegarLoop]: Abstraction has 1681 states and 6718 transitions. [2021-06-01 17:34:15,795 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:15,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1681 states and 6718 transitions. [2021-06-01 17:34:15,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:15,797 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:15,797 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:15,797 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable464 [2021-06-01 17:34:15,797 INFO L430 AbstractCegarLoop]: === Iteration 466 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:15,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:15,797 INFO L82 PathProgramCache]: Analyzing trace with hash 579953119, now seen corresponding path program 462 times [2021-06-01 17:34:15,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:15,797 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888046791] [2021-06-01 17:34:15,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:15,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:15,872 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:15,872 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888046791] [2021-06-01 17:34:15,872 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888046791] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:15,872 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:15,872 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:15,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937829086] [2021-06-01 17:34:15,872 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:15,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:15,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:15,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:15,872 INFO L87 Difference]: Start difference. First operand 1681 states and 6718 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:15,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:15,936 INFO L93 Difference]: Finished difference Result 3821 states and 14512 transitions. [2021-06-01 17:34:15,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:15,936 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:15,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:15,943 INFO L225 Difference]: With dead ends: 3821 [2021-06-01 17:34:15,943 INFO L226 Difference]: Without dead ends: 3522 [2021-06-01 17:34:15,943 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:15,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3522 states. [2021-06-01 17:34:15,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3522 to 1645. [2021-06-01 17:34:15,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1644 states have (on average 4.017031630170316) internal successors, (6604), 1644 states have internal predecessors, (6604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:15,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 6604 transitions. [2021-06-01 17:34:15,984 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 6604 transitions. Word has length 25 [2021-06-01 17:34:15,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:15,984 INFO L482 AbstractCegarLoop]: Abstraction has 1645 states and 6604 transitions. [2021-06-01 17:34:15,984 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:15,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 6604 transitions. [2021-06-01 17:34:15,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:15,986 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:15,986 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:15,986 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable465 [2021-06-01 17:34:15,986 INFO L430 AbstractCegarLoop]: === Iteration 467 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:15,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:15,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1694952223, now seen corresponding path program 463 times [2021-06-01 17:34:15,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:15,986 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042026828] [2021-06-01 17:34:15,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:16,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:16,060 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:16,060 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042026828] [2021-06-01 17:34:16,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042026828] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:16,061 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:16,061 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:16,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918616663] [2021-06-01 17:34:16,061 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:16,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:16,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:16,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:16,061 INFO L87 Difference]: Start difference. First operand 1645 states and 6604 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:16,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:16,123 INFO L93 Difference]: Finished difference Result 3721 states and 14134 transitions. [2021-06-01 17:34:16,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:16,123 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:16,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:16,130 INFO L225 Difference]: With dead ends: 3721 [2021-06-01 17:34:16,130 INFO L226 Difference]: Without dead ends: 3438 [2021-06-01 17:34:16,130 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:16,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3438 states. [2021-06-01 17:34:16,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3438 to 1695. [2021-06-01 17:34:16,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1695 states, 1694 states have (on average 4.0100354191263285) internal successors, (6793), 1694 states have internal predecessors, (6793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:16,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 6793 transitions. [2021-06-01 17:34:16,172 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 6793 transitions. Word has length 25 [2021-06-01 17:34:16,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:16,172 INFO L482 AbstractCegarLoop]: Abstraction has 1695 states and 6793 transitions. [2021-06-01 17:34:16,172 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:16,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 6793 transitions. [2021-06-01 17:34:16,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:16,174 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:16,174 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:16,174 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable466 [2021-06-01 17:34:16,174 INFO L430 AbstractCegarLoop]: === Iteration 468 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:16,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:16,175 INFO L82 PathProgramCache]: Analyzing trace with hash -348384771, now seen corresponding path program 464 times [2021-06-01 17:34:16,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:16,175 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89117931] [2021-06-01 17:34:16,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:16,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:16,250 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:16,250 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89117931] [2021-06-01 17:34:16,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89117931] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:16,250 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:16,250 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:16,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104910646] [2021-06-01 17:34:16,250 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:16,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:16,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:16,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:16,250 INFO L87 Difference]: Start difference. First operand 1695 states and 6793 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:16,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:16,314 INFO L93 Difference]: Finished difference Result 3685 states and 13958 transitions. [2021-06-01 17:34:16,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:16,314 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:16,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:16,321 INFO L225 Difference]: With dead ends: 3685 [2021-06-01 17:34:16,321 INFO L226 Difference]: Without dead ends: 3410 [2021-06-01 17:34:16,321 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:16,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3410 states. [2021-06-01 17:34:16,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3410 to 1667. [2021-06-01 17:34:16,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1666 states have (on average 4.016206482593037) internal successors, (6691), 1666 states have internal predecessors, (6691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:16,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 6691 transitions. [2021-06-01 17:34:16,361 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 6691 transitions. Word has length 25 [2021-06-01 17:34:16,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:16,361 INFO L482 AbstractCegarLoop]: Abstraction has 1667 states and 6691 transitions. [2021-06-01 17:34:16,361 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:16,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 6691 transitions. [2021-06-01 17:34:16,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:16,363 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:16,363 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:16,364 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable467 [2021-06-01 17:34:16,364 INFO L430 AbstractCegarLoop]: === Iteration 469 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:16,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:16,364 INFO L82 PathProgramCache]: Analyzing trace with hash -211934433, now seen corresponding path program 465 times [2021-06-01 17:34:16,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:16,364 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535746153] [2021-06-01 17:34:16,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:16,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:16,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:16,446 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:16,446 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535746153] [2021-06-01 17:34:16,446 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535746153] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:16,446 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:16,446 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:16,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008746847] [2021-06-01 17:34:16,446 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:16,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:16,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:16,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:16,447 INFO L87 Difference]: Start difference. First operand 1667 states and 6691 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:16,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:16,512 INFO L93 Difference]: Finished difference Result 3826 states and 14534 transitions. [2021-06-01 17:34:16,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:16,512 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:16,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:16,519 INFO L225 Difference]: With dead ends: 3826 [2021-06-01 17:34:16,519 INFO L226 Difference]: Without dead ends: 3543 [2021-06-01 17:34:16,519 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:16,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3543 states. [2021-06-01 17:34:16,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3543 to 1729. [2021-06-01 17:34:16,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1729 states, 1728 states have (on average 3.997685185185185) internal successors, (6908), 1728 states have internal predecessors, (6908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:16,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1729 states to 1729 states and 6908 transitions. [2021-06-01 17:34:16,561 INFO L78 Accepts]: Start accepts. Automaton has 1729 states and 6908 transitions. Word has length 25 [2021-06-01 17:34:16,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:16,561 INFO L482 AbstractCegarLoop]: Abstraction has 1729 states and 6908 transitions. [2021-06-01 17:34:16,561 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:16,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1729 states and 6908 transitions. [2021-06-01 17:34:16,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:16,564 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:16,564 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:16,564 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable468 [2021-06-01 17:34:16,564 INFO L430 AbstractCegarLoop]: === Iteration 470 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:16,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:16,564 INFO L82 PathProgramCache]: Analyzing trace with hash -131044577, now seen corresponding path program 466 times [2021-06-01 17:34:16,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:16,564 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918113985] [2021-06-01 17:34:16,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:16,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:16,640 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:16,640 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918113985] [2021-06-01 17:34:16,640 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918113985] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:16,640 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:16,640 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:16,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312506141] [2021-06-01 17:34:16,640 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:16,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:16,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:16,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:16,641 INFO L87 Difference]: Start difference. First operand 1729 states and 6908 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:16,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:16,700 INFO L93 Difference]: Finished difference Result 3861 states and 14607 transitions. [2021-06-01 17:34:16,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:16,701 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:16,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:16,708 INFO L225 Difference]: With dead ends: 3861 [2021-06-01 17:34:16,708 INFO L226 Difference]: Without dead ends: 3481 [2021-06-01 17:34:16,708 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:16,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3481 states. [2021-06-01 17:34:16,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3481 to 1667. [2021-06-01 17:34:16,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1666 states have (on average 4.003001200480192) internal successors, (6669), 1666 states have internal predecessors, (6669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:16,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 6669 transitions. [2021-06-01 17:34:16,748 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 6669 transitions. Word has length 25 [2021-06-01 17:34:16,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:16,748 INFO L482 AbstractCegarLoop]: Abstraction has 1667 states and 6669 transitions. [2021-06-01 17:34:16,748 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:16,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 6669 transitions. [2021-06-01 17:34:16,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:16,751 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:16,751 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:16,751 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable469 [2021-06-01 17:34:16,751 INFO L430 AbstractCegarLoop]: === Iteration 471 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:16,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:16,751 INFO L82 PathProgramCache]: Analyzing trace with hash 770413181, now seen corresponding path program 467 times [2021-06-01 17:34:16,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:16,751 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274272049] [2021-06-01 17:34:16,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:16,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:16,837 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:16,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274272049] [2021-06-01 17:34:16,837 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274272049] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:16,837 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:16,837 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:16,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097986487] [2021-06-01 17:34:16,837 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:16,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:16,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:16,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:16,837 INFO L87 Difference]: Start difference. First operand 1667 states and 6669 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:16,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:16,920 INFO L93 Difference]: Finished difference Result 3736 states and 14133 transitions. [2021-06-01 17:34:16,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:16,921 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:16,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:16,928 INFO L225 Difference]: With dead ends: 3736 [2021-06-01 17:34:16,928 INFO L226 Difference]: Without dead ends: 3489 [2021-06-01 17:34:16,928 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:16,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3489 states. [2021-06-01 17:34:16,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3489 to 1711. [2021-06-01 17:34:16,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1711 states, 1710 states have (on average 3.988888888888889) internal successors, (6821), 1710 states have internal predecessors, (6821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:16,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 6821 transitions. [2021-06-01 17:34:16,968 INFO L78 Accepts]: Start accepts. Automaton has 1711 states and 6821 transitions. Word has length 25 [2021-06-01 17:34:16,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:16,968 INFO L482 AbstractCegarLoop]: Abstraction has 1711 states and 6821 transitions. [2021-06-01 17:34:16,968 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:16,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1711 states and 6821 transitions. [2021-06-01 17:34:16,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:16,970 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:16,970 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:16,970 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable470 [2021-06-01 17:34:16,970 INFO L430 AbstractCegarLoop]: === Iteration 472 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:16,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:16,971 INFO L82 PathProgramCache]: Analyzing trace with hash -299105825, now seen corresponding path program 468 times [2021-06-01 17:34:16,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:16,971 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500515270] [2021-06-01 17:34:16,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:17,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:17,056 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:17,056 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500515270] [2021-06-01 17:34:17,056 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500515270] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:17,056 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:17,056 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:17,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320399800] [2021-06-01 17:34:17,056 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:17,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:17,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:17,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:17,056 INFO L87 Difference]: Start difference. First operand 1711 states and 6821 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:17,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:17,115 INFO L93 Difference]: Finished difference Result 3807 states and 14372 transitions. [2021-06-01 17:34:17,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:17,115 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:17,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:17,122 INFO L225 Difference]: With dead ends: 3807 [2021-06-01 17:34:17,122 INFO L226 Difference]: Without dead ends: 3423 [2021-06-01 17:34:17,122 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:17,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3423 states. [2021-06-01 17:34:17,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3423 to 1645. [2021-06-01 17:34:17,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1644 states have (on average 4.010948905109489) internal successors, (6594), 1644 states have internal predecessors, (6594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:17,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 6594 transitions. [2021-06-01 17:34:17,162 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 6594 transitions. Word has length 25 [2021-06-01 17:34:17,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:17,162 INFO L482 AbstractCegarLoop]: Abstraction has 1645 states and 6594 transitions. [2021-06-01 17:34:17,162 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:17,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 6594 transitions. [2021-06-01 17:34:17,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:17,164 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:17,164 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:17,164 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable471 [2021-06-01 17:34:17,164 INFO L430 AbstractCegarLoop]: === Iteration 473 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:17,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:17,164 INFO L82 PathProgramCache]: Analyzing trace with hash 838204157, now seen corresponding path program 469 times [2021-06-01 17:34:17,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:17,164 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902251556] [2021-06-01 17:34:17,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:17,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:17,237 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:17,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902251556] [2021-06-01 17:34:17,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902251556] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:17,237 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:17,237 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:17,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717886939] [2021-06-01 17:34:17,237 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:17,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:17,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:17,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:17,238 INFO L87 Difference]: Start difference. First operand 1645 states and 6594 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:17,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:17,308 INFO L93 Difference]: Finished difference Result 3747 states and 14247 transitions. [2021-06-01 17:34:17,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:17,309 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:17,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:17,315 INFO L225 Difference]: With dead ends: 3747 [2021-06-01 17:34:17,316 INFO L226 Difference]: Without dead ends: 3464 [2021-06-01 17:34:17,316 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:17,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3464 states. [2021-06-01 17:34:17,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3464 to 1707. [2021-06-01 17:34:17,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1706 states have (on average 4.007620164126612) internal successors, (6837), 1706 states have internal predecessors, (6837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:17,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 6837 transitions. [2021-06-01 17:34:17,359 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 6837 transitions. Word has length 25 [2021-06-01 17:34:17,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:17,359 INFO L482 AbstractCegarLoop]: Abstraction has 1707 states and 6837 transitions. [2021-06-01 17:34:17,360 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:17,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 6837 transitions. [2021-06-01 17:34:17,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:17,362 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:17,362 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:17,362 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable472 [2021-06-01 17:34:17,362 INFO L430 AbstractCegarLoop]: === Iteration 474 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:17,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:17,362 INFO L82 PathProgramCache]: Analyzing trace with hash 2030670589, now seen corresponding path program 470 times [2021-06-01 17:34:17,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:17,363 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619550523] [2021-06-01 17:34:17,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:17,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:17,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:17,436 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:17,436 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619550523] [2021-06-01 17:34:17,436 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619550523] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:17,436 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:17,436 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:17,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379483123] [2021-06-01 17:34:17,437 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:17,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:17,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:17,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:17,437 INFO L87 Difference]: Start difference. First operand 1707 states and 6837 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:17,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:17,505 INFO L93 Difference]: Finished difference Result 3727 states and 14135 transitions. [2021-06-01 17:34:17,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:17,505 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:17,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:17,512 INFO L225 Difference]: With dead ends: 3727 [2021-06-01 17:34:17,512 INFO L226 Difference]: Without dead ends: 3428 [2021-06-01 17:34:17,512 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:17,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3428 states. [2021-06-01 17:34:17,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3428 to 1671. [2021-06-01 17:34:17,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1671 states, 1670 states have (on average 4.0113772455089824) internal successors, (6699), 1670 states have internal predecessors, (6699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:17,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 6699 transitions. [2021-06-01 17:34:17,553 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 6699 transitions. Word has length 25 [2021-06-01 17:34:17,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:17,553 INFO L482 AbstractCegarLoop]: Abstraction has 1671 states and 6699 transitions. [2021-06-01 17:34:17,553 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:17,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 6699 transitions. [2021-06-01 17:34:17,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:17,555 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:17,555 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:17,555 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable473 [2021-06-01 17:34:17,555 INFO L430 AbstractCegarLoop]: === Iteration 475 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:17,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:17,556 INFO L82 PathProgramCache]: Analyzing trace with hash 220680799, now seen corresponding path program 471 times [2021-06-01 17:34:17,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:17,556 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827142069] [2021-06-01 17:34:17,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:17,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:17,630 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:17,630 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827142069] [2021-06-01 17:34:17,630 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827142069] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:17,630 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:17,630 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:17,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290119182] [2021-06-01 17:34:17,630 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:17,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:17,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:17,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:17,630 INFO L87 Difference]: Start difference. First operand 1671 states and 6699 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:17,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:17,702 INFO L93 Difference]: Finished difference Result 3766 states and 14268 transitions. [2021-06-01 17:34:17,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:17,703 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:17,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:17,710 INFO L225 Difference]: With dead ends: 3766 [2021-06-01 17:34:17,710 INFO L226 Difference]: Without dead ends: 3483 [2021-06-01 17:34:17,710 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:17,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3483 states. [2021-06-01 17:34:17,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3483 to 1733. [2021-06-01 17:34:17,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1733 states, 1732 states have (on average 3.9930715935334873) internal successors, (6916), 1732 states have internal predecessors, (6916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:17,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 6916 transitions. [2021-06-01 17:34:17,751 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 6916 transitions. Word has length 25 [2021-06-01 17:34:17,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:17,751 INFO L482 AbstractCegarLoop]: Abstraction has 1733 states and 6916 transitions. [2021-06-01 17:34:17,751 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:17,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 6916 transitions. [2021-06-01 17:34:17,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:17,754 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:17,754 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:17,754 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable474 [2021-06-01 17:34:17,754 INFO L430 AbstractCegarLoop]: === Iteration 476 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:17,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:17,754 INFO L82 PathProgramCache]: Analyzing trace with hash 2140861181, now seen corresponding path program 472 times [2021-06-01 17:34:17,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:17,754 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566081617] [2021-06-01 17:34:17,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:17,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:17,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:17,828 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:17,828 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566081617] [2021-06-01 17:34:17,828 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566081617] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:17,828 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:17,828 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:17,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484167439] [2021-06-01 17:34:17,829 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:17,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:17,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:17,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:17,829 INFO L87 Difference]: Start difference. First operand 1733 states and 6916 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:17,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:17,882 INFO L93 Difference]: Finished difference Result 3801 states and 14341 transitions. [2021-06-01 17:34:17,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:17,883 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:17,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:17,889 INFO L225 Difference]: With dead ends: 3801 [2021-06-01 17:34:17,889 INFO L226 Difference]: Without dead ends: 3421 [2021-06-01 17:34:17,890 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 80.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:17,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3421 states. [2021-06-01 17:34:17,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3421 to 1671. [2021-06-01 17:34:17,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1671 states, 1670 states have (on average 3.9958083832335327) internal successors, (6673), 1670 states have internal predecessors, (6673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:17,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 6673 transitions. [2021-06-01 17:34:17,930 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 6673 transitions. Word has length 25 [2021-06-01 17:34:17,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:17,930 INFO L482 AbstractCegarLoop]: Abstraction has 1671 states and 6673 transitions. [2021-06-01 17:34:17,930 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:17,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 6673 transitions. [2021-06-01 17:34:17,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:17,932 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:17,932 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:17,932 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable475 [2021-06-01 17:34:17,932 INFO L430 AbstractCegarLoop]: === Iteration 477 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:17,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:17,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1838556419, now seen corresponding path program 473 times [2021-06-01 17:34:17,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:17,933 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843606622] [2021-06-01 17:34:17,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:17,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:18,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:18,016 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:18,016 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843606622] [2021-06-01 17:34:18,016 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843606622] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:18,016 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:18,017 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:18,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871598081] [2021-06-01 17:34:18,017 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:18,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:18,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:18,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:18,017 INFO L87 Difference]: Start difference. First operand 1671 states and 6673 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:18,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:18,082 INFO L93 Difference]: Finished difference Result 3716 states and 14047 transitions. [2021-06-01 17:34:18,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:18,083 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:18,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:18,090 INFO L225 Difference]: With dead ends: 3716 [2021-06-01 17:34:18,090 INFO L226 Difference]: Without dead ends: 3453 [2021-06-01 17:34:18,090 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:18,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3453 states. [2021-06-01 17:34:18,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3453 to 1723. [2021-06-01 17:34:18,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1723 states, 1722 states have (on average 3.981997677119628) internal successors, (6857), 1722 states have internal predecessors, (6857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:18,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1723 states to 1723 states and 6857 transitions. [2021-06-01 17:34:18,130 INFO L78 Accepts]: Start accepts. Automaton has 1723 states and 6857 transitions. Word has length 25 [2021-06-01 17:34:18,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:18,130 INFO L482 AbstractCegarLoop]: Abstraction has 1723 states and 6857 transitions. [2021-06-01 17:34:18,130 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:18,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1723 states and 6857 transitions. [2021-06-01 17:34:18,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:18,133 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:18,133 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:18,133 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable476 [2021-06-01 17:34:18,133 INFO L430 AbstractCegarLoop]: === Iteration 478 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:18,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:18,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1620204833, now seen corresponding path program 474 times [2021-06-01 17:34:18,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:18,133 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633408138] [2021-06-01 17:34:18,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:18,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:18,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:18,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633408138] [2021-06-01 17:34:18,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633408138] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:18,218 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:18,218 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:18,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189332582] [2021-06-01 17:34:18,219 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:18,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:18,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:18,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:18,219 INFO L87 Difference]: Start difference. First operand 1723 states and 6857 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:18,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:18,279 INFO L93 Difference]: Finished difference Result 3644 states and 13735 transitions. [2021-06-01 17:34:18,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:18,279 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:18,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:18,286 INFO L225 Difference]: With dead ends: 3644 [2021-06-01 17:34:18,286 INFO L226 Difference]: Without dead ends: 3248 [2021-06-01 17:34:18,286 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:18,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3248 states. [2021-06-01 17:34:18,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3248 to 1645. [2021-06-01 17:34:18,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1644 states have (on average 4.004866180048662) internal successors, (6584), 1644 states have internal predecessors, (6584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:18,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 6584 transitions. [2021-06-01 17:34:18,324 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 6584 transitions. Word has length 25 [2021-06-01 17:34:18,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:18,324 INFO L482 AbstractCegarLoop]: Abstraction has 1645 states and 6584 transitions. [2021-06-01 17:34:18,325 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:18,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 6584 transitions. [2021-06-01 17:34:18,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:18,327 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:18,327 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:18,327 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable477 [2021-06-01 17:34:18,327 INFO L430 AbstractCegarLoop]: === Iteration 479 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:18,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:18,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1810600667, now seen corresponding path program 475 times [2021-06-01 17:34:18,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:18,327 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870362081] [2021-06-01 17:34:18,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:18,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:18,410 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:18,410 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870362081] [2021-06-01 17:34:18,410 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870362081] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:18,410 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:18,410 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:18,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935666151] [2021-06-01 17:34:18,411 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:18,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:18,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:18,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:18,411 INFO L87 Difference]: Start difference. First operand 1645 states and 6584 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:18,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:18,472 INFO L93 Difference]: Finished difference Result 3527 states and 13295 transitions. [2021-06-01 17:34:18,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:18,472 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:18,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:18,479 INFO L225 Difference]: With dead ends: 3527 [2021-06-01 17:34:18,479 INFO L226 Difference]: Without dead ends: 3280 [2021-06-01 17:34:18,479 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:18,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3280 states. [2021-06-01 17:34:18,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3280 to 1689. [2021-06-01 17:34:18,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1689 states, 1688 states have (on average 4.0) internal successors, (6752), 1688 states have internal predecessors, (6752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:18,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 6752 transitions. [2021-06-01 17:34:18,518 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 6752 transitions. Word has length 25 [2021-06-01 17:34:18,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:18,518 INFO L482 AbstractCegarLoop]: Abstraction has 1689 states and 6752 transitions. [2021-06-01 17:34:18,518 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:18,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 6752 transitions. [2021-06-01 17:34:18,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:18,520 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:18,520 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:18,520 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable478 [2021-06-01 17:34:18,520 INFO L430 AbstractCegarLoop]: === Iteration 480 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:18,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:18,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1403304003, now seen corresponding path program 476 times [2021-06-01 17:34:18,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:18,521 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429988105] [2021-06-01 17:34:18,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:18,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:18,603 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:18,603 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429988105] [2021-06-01 17:34:18,604 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429988105] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:18,604 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:18,604 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:18,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840312300] [2021-06-01 17:34:18,604 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:18,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:18,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:18,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:18,604 INFO L87 Difference]: Start difference. First operand 1689 states and 6752 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:18,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:18,666 INFO L93 Difference]: Finished difference Result 3543 states and 13343 transitions. [2021-06-01 17:34:18,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:18,666 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:18,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:18,673 INFO L225 Difference]: With dead ends: 3543 [2021-06-01 17:34:18,673 INFO L226 Difference]: Without dead ends: 3256 [2021-06-01 17:34:18,673 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:18,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3256 states. [2021-06-01 17:34:18,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3256 to 1665. [2021-06-01 17:34:18,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1665 states, 1664 states have (on average 4.0048076923076925) internal successors, (6664), 1664 states have internal predecessors, (6664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:18,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 6664 transitions. [2021-06-01 17:34:18,713 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 6664 transitions. Word has length 25 [2021-06-01 17:34:18,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:18,713 INFO L482 AbstractCegarLoop]: Abstraction has 1665 states and 6664 transitions. [2021-06-01 17:34:18,713 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:18,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 6664 transitions. [2021-06-01 17:34:18,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:18,715 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:18,716 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:18,716 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable479 [2021-06-01 17:34:18,716 INFO L430 AbstractCegarLoop]: === Iteration 481 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:18,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:18,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1193077309, now seen corresponding path program 477 times [2021-06-01 17:34:18,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:18,716 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254909064] [2021-06-01 17:34:18,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:18,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:18,809 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:18,809 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254909064] [2021-06-01 17:34:18,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254909064] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:18,809 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:18,809 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:18,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023560601] [2021-06-01 17:34:18,810 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:18,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:18,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:18,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:18,810 INFO L87 Difference]: Start difference. First operand 1665 states and 6664 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:18,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:18,870 INFO L93 Difference]: Finished difference Result 3431 states and 12907 transitions. [2021-06-01 17:34:18,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:18,870 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:18,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:18,877 INFO L225 Difference]: With dead ends: 3431 [2021-06-01 17:34:18,877 INFO L226 Difference]: Without dead ends: 3184 [2021-06-01 17:34:18,877 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:18,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3184 states. [2021-06-01 17:34:18,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3184 to 1709. [2021-06-01 17:34:18,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1709 states, 1708 states have (on average 3.990632318501171) internal successors, (6816), 1708 states have internal predecessors, (6816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:18,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 6816 transitions. [2021-06-01 17:34:18,916 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 6816 transitions. Word has length 25 [2021-06-01 17:34:18,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:18,916 INFO L482 AbstractCegarLoop]: Abstraction has 1709 states and 6816 transitions. [2021-06-01 17:34:18,916 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:18,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 6816 transitions. [2021-06-01 17:34:18,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:18,919 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:18,919 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:18,919 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable480 [2021-06-01 17:34:18,919 INFO L430 AbstractCegarLoop]: === Iteration 482 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:18,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:18,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1962848829, now seen corresponding path program 478 times [2021-06-01 17:34:18,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:18,919 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368912266] [2021-06-01 17:34:18,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:18,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:19,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:19,013 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:19,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368912266] [2021-06-01 17:34:19,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368912266] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:19,013 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:19,013 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:19,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037649362] [2021-06-01 17:34:19,014 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:19,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:19,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:19,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:19,014 INFO L87 Difference]: Start difference. First operand 1709 states and 6816 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:19,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:19,063 INFO L93 Difference]: Finished difference Result 3502 states and 13146 transitions. [2021-06-01 17:34:19,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:19,063 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:19,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:19,069 INFO L225 Difference]: With dead ends: 3502 [2021-06-01 17:34:19,069 INFO L226 Difference]: Without dead ends: 3140 [2021-06-01 17:34:19,069 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:19,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3140 states. [2021-06-01 17:34:19,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 1665. [2021-06-01 17:34:19,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1665 states, 1664 states have (on average 3.9927884615384617) internal successors, (6644), 1664 states have internal predecessors, (6644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:19,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 6644 transitions. [2021-06-01 17:34:19,107 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 6644 transitions. Word has length 25 [2021-06-01 17:34:19,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:19,107 INFO L482 AbstractCegarLoop]: Abstraction has 1665 states and 6644 transitions. [2021-06-01 17:34:19,107 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:19,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 6644 transitions. [2021-06-01 17:34:19,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:19,109 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:19,109 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:19,109 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable481 [2021-06-01 17:34:19,110 INFO L430 AbstractCegarLoop]: === Iteration 483 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:19,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:19,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1581082271, now seen corresponding path program 479 times [2021-06-01 17:34:19,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:19,110 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162856199] [2021-06-01 17:34:19,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:19,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:19,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:19,203 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:19,203 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162856199] [2021-06-01 17:34:19,203 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162856199] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:19,203 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:19,203 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:19,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923279689] [2021-06-01 17:34:19,204 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:19,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:19,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:19,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:19,204 INFO L87 Difference]: Start difference. First operand 1665 states and 6644 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:19,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:19,275 INFO L93 Difference]: Finished difference Result 3419 states and 12851 transitions. [2021-06-01 17:34:19,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:19,275 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:19,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:19,281 INFO L225 Difference]: With dead ends: 3419 [2021-06-01 17:34:19,281 INFO L226 Difference]: Without dead ends: 3156 [2021-06-01 17:34:19,282 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:19,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3156 states. [2021-06-01 17:34:19,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3156 to 1717. [2021-06-01 17:34:19,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1717 states, 1716 states have (on average 3.979020979020979) internal successors, (6828), 1716 states have internal predecessors, (6828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:19,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 6828 transitions. [2021-06-01 17:34:19,321 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 6828 transitions. Word has length 25 [2021-06-01 17:34:19,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:19,321 INFO L482 AbstractCegarLoop]: Abstraction has 1717 states and 6828 transitions. [2021-06-01 17:34:19,321 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:19,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 6828 transitions. [2021-06-01 17:34:19,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:19,323 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:19,323 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:19,323 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable482 [2021-06-01 17:34:19,323 INFO L430 AbstractCegarLoop]: === Iteration 484 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:19,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:19,324 INFO L82 PathProgramCache]: Analyzing trace with hash -239953155, now seen corresponding path program 480 times [2021-06-01 17:34:19,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:19,324 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392690742] [2021-06-01 17:34:19,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:19,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:19,417 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:19,417 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392690742] [2021-06-01 17:34:19,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392690742] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:19,417 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:19,417 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:19,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016921839] [2021-06-01 17:34:19,417 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:19,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:19,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:19,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:19,417 INFO L87 Difference]: Start difference. First operand 1717 states and 6828 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:19,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:19,470 INFO L93 Difference]: Finished difference Result 3347 states and 12539 transitions. [2021-06-01 17:34:19,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:19,471 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:19,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:19,476 INFO L225 Difference]: With dead ends: 3347 [2021-06-01 17:34:19,476 INFO L226 Difference]: Without dead ends: 2943 [2021-06-01 17:34:19,477 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:19,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2943 states. [2021-06-01 17:34:19,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2943 to 1631. [2021-06-01 17:34:19,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1630 states have (on average 4.0177914110429445) internal successors, (6549), 1630 states have internal predecessors, (6549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:19,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 6549 transitions. [2021-06-01 17:34:19,513 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 6549 transitions. Word has length 25 [2021-06-01 17:34:19,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:19,513 INFO L482 AbstractCegarLoop]: Abstraction has 1631 states and 6549 transitions. [2021-06-01 17:34:19,513 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:19,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 6549 transitions. [2021-06-01 17:34:19,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:19,516 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:19,516 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:19,516 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable483 [2021-06-01 17:34:19,516 INFO L430 AbstractCegarLoop]: === Iteration 485 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:19,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:19,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1302479273, now seen corresponding path program 481 times [2021-06-01 17:34:19,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:19,516 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513850059] [2021-06-01 17:34:19,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:19,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:19,605 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:19,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513850059] [2021-06-01 17:34:19,605 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513850059] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:19,605 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:19,605 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:19,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171907889] [2021-06-01 17:34:19,605 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:19,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:19,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:19,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:19,606 INFO L87 Difference]: Start difference. First operand 1631 states and 6549 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:19,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:19,657 INFO L93 Difference]: Finished difference Result 3540 states and 13372 transitions. [2021-06-01 17:34:19,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:19,657 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:19,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:19,663 INFO L225 Difference]: With dead ends: 3540 [2021-06-01 17:34:19,663 INFO L226 Difference]: Without dead ends: 3293 [2021-06-01 17:34:19,663 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:19,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3293 states. [2021-06-01 17:34:19,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3293 to 1673. [2021-06-01 17:34:19,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1673 states, 1672 states have (on average 4.008373205741627) internal successors, (6702), 1672 states have internal predecessors, (6702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:19,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 6702 transitions. [2021-06-01 17:34:19,703 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 6702 transitions. Word has length 25 [2021-06-01 17:34:19,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:19,703 INFO L482 AbstractCegarLoop]: Abstraction has 1673 states and 6702 transitions. [2021-06-01 17:34:19,703 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:19,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 6702 transitions. [2021-06-01 17:34:19,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:19,705 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:19,705 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:19,705 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable484 [2021-06-01 17:34:19,705 INFO L430 AbstractCegarLoop]: === Iteration 486 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:19,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:19,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1402553273, now seen corresponding path program 482 times [2021-06-01 17:34:19,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:19,705 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325552306] [2021-06-01 17:34:19,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:19,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:19,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:19,793 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:19,793 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325552306] [2021-06-01 17:34:19,793 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325552306] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:19,793 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:19,793 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:19,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36032823] [2021-06-01 17:34:19,794 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:19,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:19,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:19,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:19,794 INFO L87 Difference]: Start difference. First operand 1673 states and 6702 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:19,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:19,858 INFO L93 Difference]: Finished difference Result 3578 states and 13497 transitions. [2021-06-01 17:34:19,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:19,858 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:19,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:19,864 INFO L225 Difference]: With dead ends: 3578 [2021-06-01 17:34:19,864 INFO L226 Difference]: Without dead ends: 3265 [2021-06-01 17:34:19,865 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:19,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3265 states. [2021-06-01 17:34:19,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3265 to 1645. [2021-06-01 17:34:19,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1644 states have (on average 4.014598540145985) internal successors, (6600), 1644 states have internal predecessors, (6600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:19,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 6600 transitions. [2021-06-01 17:34:19,903 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 6600 transitions. Word has length 25 [2021-06-01 17:34:19,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:19,903 INFO L482 AbstractCegarLoop]: Abstraction has 1645 states and 6600 transitions. [2021-06-01 17:34:19,904 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:19,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 6600 transitions. [2021-06-01 17:34:19,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:19,906 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:19,906 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:19,906 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable485 [2021-06-01 17:34:19,906 INFO L430 AbstractCegarLoop]: === Iteration 487 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:19,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:19,906 INFO L82 PathProgramCache]: Analyzing trace with hash -221416647, now seen corresponding path program 483 times [2021-06-01 17:34:19,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:19,906 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830516793] [2021-06-01 17:34:19,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:19,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:19,998 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:19,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830516793] [2021-06-01 17:34:19,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830516793] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:19,998 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:19,998 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:19,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523649313] [2021-06-01 17:34:19,999 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:19,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:19,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:19,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:19,999 INFO L87 Difference]: Start difference. First operand 1645 states and 6600 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:20,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:20,050 INFO L93 Difference]: Finished difference Result 3538 states and 13353 transitions. [2021-06-01 17:34:20,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:20,050 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:20,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:20,056 INFO L225 Difference]: With dead ends: 3538 [2021-06-01 17:34:20,057 INFO L226 Difference]: Without dead ends: 3291 [2021-06-01 17:34:20,057 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:20,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3291 states. [2021-06-01 17:34:20,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3291 to 1673. [2021-06-01 17:34:20,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1673 states, 1672 states have (on average 4.0) internal successors, (6688), 1672 states have internal predecessors, (6688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:20,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 6688 transitions. [2021-06-01 17:34:20,096 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 6688 transitions. Word has length 25 [2021-06-01 17:34:20,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:20,096 INFO L482 AbstractCegarLoop]: Abstraction has 1673 states and 6688 transitions. [2021-06-01 17:34:20,096 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:20,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 6688 transitions. [2021-06-01 17:34:20,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:20,098 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:20,098 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:20,098 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable486 [2021-06-01 17:34:20,098 INFO L430 AbstractCegarLoop]: === Iteration 488 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:20,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:20,099 INFO L82 PathProgramCache]: Analyzing trace with hash 786881337, now seen corresponding path program 484 times [2021-06-01 17:34:20,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:20,099 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056968115] [2021-06-01 17:34:20,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:20,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:20,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:20,191 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:20,191 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056968115] [2021-06-01 17:34:20,191 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056968115] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:20,191 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:20,191 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:20,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963885111] [2021-06-01 17:34:20,191 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:20,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:20,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:20,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:20,191 INFO L87 Difference]: Start difference. First operand 1673 states and 6688 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:20,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:20,256 INFO L93 Difference]: Finished difference Result 3574 states and 13473 transitions. [2021-06-01 17:34:20,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:20,257 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:20,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:20,263 INFO L225 Difference]: With dead ends: 3574 [2021-06-01 17:34:20,263 INFO L226 Difference]: Without dead ends: 3263 [2021-06-01 17:34:20,263 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:20,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3263 states. [2021-06-01 17:34:20,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3263 to 1645. [2021-06-01 17:34:20,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1644 states have (on average 4.0060827250608275) internal successors, (6586), 1644 states have internal predecessors, (6586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:20,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 6586 transitions. [2021-06-01 17:34:20,303 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 6586 transitions. Word has length 25 [2021-06-01 17:34:20,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:20,303 INFO L482 AbstractCegarLoop]: Abstraction has 1645 states and 6586 transitions. [2021-06-01 17:34:20,303 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:20,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 6586 transitions. [2021-06-01 17:34:20,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:20,305 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:20,305 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:20,305 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable487 [2021-06-01 17:34:20,305 INFO L430 AbstractCegarLoop]: === Iteration 489 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:20,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:20,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1195745307, now seen corresponding path program 485 times [2021-06-01 17:34:20,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:20,305 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640199043] [2021-06-01 17:34:20,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:20,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:20,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:20,387 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:20,387 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640199043] [2021-06-01 17:34:20,387 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640199043] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:20,387 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:20,387 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:20,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151481841] [2021-06-01 17:34:20,388 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:20,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:20,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:20,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:20,388 INFO L87 Difference]: Start difference. First operand 1645 states and 6586 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:20,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:20,462 INFO L93 Difference]: Finished difference Result 3632 states and 13728 transitions. [2021-06-01 17:34:20,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:20,462 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:20,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:20,469 INFO L225 Difference]: With dead ends: 3632 [2021-06-01 17:34:20,469 INFO L226 Difference]: Without dead ends: 3347 [2021-06-01 17:34:20,469 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:20,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3347 states. [2021-06-01 17:34:20,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3347 to 1691. [2021-06-01 17:34:20,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1691 states, 1690 states have (on average 3.9875739644970416) internal successors, (6739), 1690 states have internal predecessors, (6739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:20,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 6739 transitions. [2021-06-01 17:34:20,510 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 6739 transitions. Word has length 25 [2021-06-01 17:34:20,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:20,510 INFO L482 AbstractCegarLoop]: Abstraction has 1691 states and 6739 transitions. [2021-06-01 17:34:20,510 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:20,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 6739 transitions. [2021-06-01 17:34:20,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:20,512 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:20,512 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:20,512 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable488 [2021-06-01 17:34:20,512 INFO L430 AbstractCegarLoop]: === Iteration 490 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:20,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:20,512 INFO L82 PathProgramCache]: Analyzing trace with hash -847591687, now seen corresponding path program 486 times [2021-06-01 17:34:20,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:20,512 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825040707] [2021-06-01 17:34:20,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:20,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:20,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:20,595 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:20,595 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825040707] [2021-06-01 17:34:20,595 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825040707] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:20,595 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:20,595 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:20,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868693093] [2021-06-01 17:34:20,595 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:20,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:20,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:20,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:20,596 INFO L87 Difference]: Start difference. First operand 1691 states and 6739 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:20,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:20,670 INFO L93 Difference]: Finished difference Result 3630 states and 13677 transitions. [2021-06-01 17:34:20,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:20,670 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:20,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:20,677 INFO L225 Difference]: With dead ends: 3630 [2021-06-01 17:34:20,677 INFO L226 Difference]: Without dead ends: 3287 [2021-06-01 17:34:20,677 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:20,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3287 states. [2021-06-01 17:34:20,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3287 to 1631. [2021-06-01 17:34:20,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1630 states have (on average 4.015337423312883) internal successors, (6545), 1630 states have internal predecessors, (6545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:20,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 6545 transitions. [2021-06-01 17:34:20,716 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 6545 transitions. Word has length 25 [2021-06-01 17:34:20,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:20,716 INFO L482 AbstractCegarLoop]: Abstraction has 1631 states and 6545 transitions. [2021-06-01 17:34:20,716 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:20,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 6545 transitions. [2021-06-01 17:34:20,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:20,718 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:20,718 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:20,718 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable489 [2021-06-01 17:34:20,718 INFO L430 AbstractCegarLoop]: === Iteration 491 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:20,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:20,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1783381319, now seen corresponding path program 487 times [2021-06-01 17:34:20,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:20,719 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402569904] [2021-06-01 17:34:20,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:20,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:20,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:20,800 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:20,800 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402569904] [2021-06-01 17:34:20,800 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402569904] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:20,800 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:20,800 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:20,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754747607] [2021-06-01 17:34:20,800 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:20,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:20,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:20,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:20,800 INFO L87 Difference]: Start difference. First operand 1631 states and 6545 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:20,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:20,852 INFO L93 Difference]: Finished difference Result 3468 states and 13056 transitions. [2021-06-01 17:34:20,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:20,852 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:20,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:20,859 INFO L225 Difference]: With dead ends: 3468 [2021-06-01 17:34:20,859 INFO L226 Difference]: Without dead ends: 3221 [2021-06-01 17:34:20,859 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 87.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:20,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3221 states. [2021-06-01 17:34:20,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3221 to 1667. [2021-06-01 17:34:20,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1666 states have (on average 4.003001200480192) internal successors, (6669), 1666 states have internal predecessors, (6669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:20,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 6669 transitions. [2021-06-01 17:34:20,898 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 6669 transitions. Word has length 25 [2021-06-01 17:34:20,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:20,898 INFO L482 AbstractCegarLoop]: Abstraction has 1667 states and 6669 transitions. [2021-06-01 17:34:20,898 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:20,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 6669 transitions. [2021-06-01 17:34:20,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:20,900 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:20,900 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:20,900 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable490 [2021-06-01 17:34:20,901 INFO L430 AbstractCegarLoop]: === Iteration 492 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:20,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:20,901 INFO L82 PathProgramCache]: Analyzing trace with hash 921651227, now seen corresponding path program 488 times [2021-06-01 17:34:20,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:20,901 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825495122] [2021-06-01 17:34:20,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:20,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:20,988 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:20,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825495122] [2021-06-01 17:34:20,988 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825495122] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:20,988 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:20,988 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:20,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762690821] [2021-06-01 17:34:20,988 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:20,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:20,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:20,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:20,989 INFO L87 Difference]: Start difference. First operand 1667 states and 6669 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:21,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:21,056 INFO L93 Difference]: Finished difference Result 3506 states and 13181 transitions. [2021-06-01 17:34:21,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:21,056 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:21,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:21,063 INFO L225 Difference]: With dead ends: 3506 [2021-06-01 17:34:21,063 INFO L226 Difference]: Without dead ends: 3193 [2021-06-01 17:34:21,063 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:21,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3193 states. [2021-06-01 17:34:21,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3193 to 1639. [2021-06-01 17:34:21,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1639 states, 1638 states have (on average 4.012820512820513) internal successors, (6573), 1638 states have internal predecessors, (6573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:21,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 6573 transitions. [2021-06-01 17:34:21,103 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 6573 transitions. Word has length 25 [2021-06-01 17:34:21,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:21,103 INFO L482 AbstractCegarLoop]: Abstraction has 1639 states and 6573 transitions. [2021-06-01 17:34:21,103 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:21,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 6573 transitions. [2021-06-01 17:34:21,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:21,105 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:21,105 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:21,105 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable491 [2021-06-01 17:34:21,105 INFO L430 AbstractCegarLoop]: === Iteration 493 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:21,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:21,105 INFO L82 PathProgramCache]: Analyzing trace with hash 823339705, now seen corresponding path program 489 times [2021-06-01 17:34:21,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:21,106 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302675233] [2021-06-01 17:34:21,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:21,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:21,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:21,180 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:21,180 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302675233] [2021-06-01 17:34:21,180 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302675233] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:21,181 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:21,181 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:21,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411602666] [2021-06-01 17:34:21,181 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:21,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:21,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:21,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:21,181 INFO L87 Difference]: Start difference. First operand 1639 states and 6573 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:21,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:21,234 INFO L93 Difference]: Finished difference Result 3418 states and 12843 transitions. [2021-06-01 17:34:21,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:21,234 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:21,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:21,241 INFO L225 Difference]: With dead ends: 3418 [2021-06-01 17:34:21,241 INFO L226 Difference]: Without dead ends: 3171 [2021-06-01 17:34:21,241 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:21,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2021-06-01 17:34:21,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 1655. [2021-06-01 17:34:21,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1655 states, 1654 states have (on average 4.003022974607013) internal successors, (6621), 1654 states have internal predecessors, (6621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:21,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 6621 transitions. [2021-06-01 17:34:21,280 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 6621 transitions. Word has length 25 [2021-06-01 17:34:21,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:21,280 INFO L482 AbstractCegarLoop]: Abstraction has 1655 states and 6621 transitions. [2021-06-01 17:34:21,280 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:21,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 6621 transitions. [2021-06-01 17:34:21,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:21,282 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:21,282 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:21,282 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable492 [2021-06-01 17:34:21,282 INFO L430 AbstractCegarLoop]: === Iteration 494 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:21,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:21,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1791130951, now seen corresponding path program 490 times [2021-06-01 17:34:21,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:21,283 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809195778] [2021-06-01 17:34:21,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:21,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:21,357 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:21,357 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809195778] [2021-06-01 17:34:21,357 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809195778] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:21,357 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:21,357 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:21,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883004595] [2021-06-01 17:34:21,358 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:21,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:21,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:21,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:21,358 INFO L87 Difference]: Start difference. First operand 1655 states and 6621 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:21,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:21,425 INFO L93 Difference]: Finished difference Result 3418 states and 12827 transitions. [2021-06-01 17:34:21,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:21,425 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:21,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:21,431 INFO L225 Difference]: With dead ends: 3418 [2021-06-01 17:34:21,431 INFO L226 Difference]: Without dead ends: 3155 [2021-06-01 17:34:21,431 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:21,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3155 states. [2021-06-01 17:34:21,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3155 to 1639. [2021-06-01 17:34:21,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1639 states, 1638 states have (on average 4.007936507936508) internal successors, (6565), 1638 states have internal predecessors, (6565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:21,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 6565 transitions. [2021-06-01 17:34:21,470 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 6565 transitions. Word has length 25 [2021-06-01 17:34:21,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:21,470 INFO L482 AbstractCegarLoop]: Abstraction has 1639 states and 6565 transitions. [2021-06-01 17:34:21,470 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:21,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 6565 transitions. [2021-06-01 17:34:21,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:21,472 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:21,472 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:21,472 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable493 [2021-06-01 17:34:21,472 INFO L430 AbstractCegarLoop]: === Iteration 495 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:21,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:21,472 INFO L82 PathProgramCache]: Analyzing trace with hash -2054465637, now seen corresponding path program 491 times [2021-06-01 17:34:21,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:21,472 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617771854] [2021-06-01 17:34:21,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:21,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:21,546 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:21,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617771854] [2021-06-01 17:34:21,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617771854] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:21,546 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:21,546 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:21,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265919187] [2021-06-01 17:34:21,546 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:21,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:21,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:21,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:21,546 INFO L87 Difference]: Start difference. First operand 1639 states and 6565 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:21,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:21,627 INFO L93 Difference]: Finished difference Result 3506 states and 13193 transitions. [2021-06-01 17:34:21,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:21,627 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:21,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:21,634 INFO L225 Difference]: With dead ends: 3506 [2021-06-01 17:34:21,634 INFO L226 Difference]: Without dead ends: 3221 [2021-06-01 17:34:21,634 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:21,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3221 states. [2021-06-01 17:34:21,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3221 to 1667. [2021-06-01 17:34:21,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1666 states have (on average 3.9933973589435774) internal successors, (6653), 1666 states have internal predecessors, (6653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:21,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 6653 transitions. [2021-06-01 17:34:21,674 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 6653 transitions. Word has length 25 [2021-06-01 17:34:21,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:21,674 INFO L482 AbstractCegarLoop]: Abstraction has 1667 states and 6653 transitions. [2021-06-01 17:34:21,674 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:21,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 6653 transitions. [2021-06-01 17:34:21,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:21,676 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:21,676 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:21,676 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable494 [2021-06-01 17:34:21,676 INFO L430 AbstractCegarLoop]: === Iteration 496 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:21,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:21,677 INFO L82 PathProgramCache]: Analyzing trace with hash 848357113, now seen corresponding path program 492 times [2021-06-01 17:34:21,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:21,677 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202812376] [2021-06-01 17:34:21,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:21,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:21,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:21,750 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:21,750 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202812376] [2021-06-01 17:34:21,750 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202812376] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:21,750 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:21,750 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:21,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84078384] [2021-06-01 17:34:21,750 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:21,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:21,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:21,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:21,750 INFO L87 Difference]: Start difference. First operand 1667 states and 6653 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:21,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:21,818 INFO L93 Difference]: Finished difference Result 3468 states and 13012 transitions. [2021-06-01 17:34:21,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:21,818 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:21,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:21,824 INFO L225 Difference]: With dead ends: 3468 [2021-06-01 17:34:21,824 INFO L226 Difference]: Without dead ends: 3185 [2021-06-01 17:34:21,825 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:21,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3185 states. [2021-06-01 17:34:21,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3185 to 1631. [2021-06-01 17:34:21,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1630 states have (on average 4.012883435582822) internal successors, (6541), 1630 states have internal predecessors, (6541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:21,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 6541 transitions. [2021-06-01 17:34:21,863 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 6541 transitions. Word has length 25 [2021-06-01 17:34:21,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:21,863 INFO L482 AbstractCegarLoop]: Abstraction has 1631 states and 6541 transitions. [2021-06-01 17:34:21,863 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:21,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 6541 transitions. [2021-06-01 17:34:21,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:21,866 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:21,866 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:21,866 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable495 [2021-06-01 17:34:21,866 INFO L430 AbstractCegarLoop]: === Iteration 497 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:21,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:21,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1395376357, now seen corresponding path program 493 times [2021-06-01 17:34:21,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:21,866 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274496525] [2021-06-01 17:34:21,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:21,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:21,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:21,951 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:21,951 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274496525] [2021-06-01 17:34:21,951 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274496525] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:21,951 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:21,951 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:21,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689157047] [2021-06-01 17:34:21,951 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:21,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:21,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:21,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:21,951 INFO L87 Difference]: Start difference. First operand 1631 states and 6541 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:22,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:22,002 INFO L93 Difference]: Finished difference Result 3464 states and 13042 transitions. [2021-06-01 17:34:22,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:22,003 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:22,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:22,009 INFO L225 Difference]: With dead ends: 3464 [2021-06-01 17:34:22,009 INFO L226 Difference]: Without dead ends: 3217 [2021-06-01 17:34:22,009 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:22,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3217 states. [2021-06-01 17:34:22,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3217 to 1667. [2021-06-01 17:34:22,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1666 states have (on average 4.0006002400960385) internal successors, (6665), 1666 states have internal predecessors, (6665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:22,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 6665 transitions. [2021-06-01 17:34:22,049 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 6665 transitions. Word has length 25 [2021-06-01 17:34:22,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:22,049 INFO L482 AbstractCegarLoop]: Abstraction has 1667 states and 6665 transitions. [2021-06-01 17:34:22,049 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:22,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 6665 transitions. [2021-06-01 17:34:22,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:22,052 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:22,052 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:22,052 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable496 [2021-06-01 17:34:22,052 INFO L430 AbstractCegarLoop]: === Iteration 498 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:22,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:22,052 INFO L82 PathProgramCache]: Analyzing trace with hash -387078373, now seen corresponding path program 494 times [2021-06-01 17:34:22,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:22,052 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485172642] [2021-06-01 17:34:22,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:22,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:22,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:22,138 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:22,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485172642] [2021-06-01 17:34:22,138 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485172642] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:22,138 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:22,138 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:22,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485723238] [2021-06-01 17:34:22,138 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:22,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:22,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:22,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:22,139 INFO L87 Difference]: Start difference. First operand 1667 states and 6665 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:22,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:22,205 INFO L93 Difference]: Finished difference Result 3500 states and 13162 transitions. [2021-06-01 17:34:22,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:22,205 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:22,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:22,211 INFO L225 Difference]: With dead ends: 3500 [2021-06-01 17:34:22,212 INFO L226 Difference]: Without dead ends: 3189 [2021-06-01 17:34:22,212 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:22,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3189 states. [2021-06-01 17:34:22,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3189 to 1639. [2021-06-01 17:34:22,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1639 states, 1638 states have (on average 4.01037851037851) internal successors, (6569), 1638 states have internal predecessors, (6569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:22,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 6569 transitions. [2021-06-01 17:34:22,250 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 6569 transitions. Word has length 25 [2021-06-01 17:34:22,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:22,250 INFO L482 AbstractCegarLoop]: Abstraction has 1639 states and 6569 transitions. [2021-06-01 17:34:22,250 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:22,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 6569 transitions. [2021-06-01 17:34:22,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:22,252 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:22,252 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:22,252 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable497 [2021-06-01 17:34:22,253 INFO L430 AbstractCegarLoop]: === Iteration 499 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:22,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:22,253 INFO L82 PathProgramCache]: Analyzing trace with hash 2052793977, now seen corresponding path program 495 times [2021-06-01 17:34:22,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:22,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523159653] [2021-06-01 17:34:22,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:22,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:22,331 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:22,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523159653] [2021-06-01 17:34:22,331 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523159653] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:22,331 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:22,331 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:22,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278062467] [2021-06-01 17:34:22,331 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:22,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:22,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:22,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:22,331 INFO L87 Difference]: Start difference. First operand 1639 states and 6569 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:22,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:22,385 INFO L93 Difference]: Finished difference Result 3416 states and 12834 transitions. [2021-06-01 17:34:22,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:22,385 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:22,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:22,391 INFO L225 Difference]: With dead ends: 3416 [2021-06-01 17:34:22,391 INFO L226 Difference]: Without dead ends: 3169 [2021-06-01 17:34:22,392 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:22,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3169 states. [2021-06-01 17:34:22,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3169 to 1655. [2021-06-01 17:34:22,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1655 states, 1654 states have (on average 4.000604594921403) internal successors, (6617), 1654 states have internal predecessors, (6617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:22,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 6617 transitions. [2021-06-01 17:34:22,431 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 6617 transitions. Word has length 25 [2021-06-01 17:34:22,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:22,431 INFO L482 AbstractCegarLoop]: Abstraction has 1655 states and 6617 transitions. [2021-06-01 17:34:22,431 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:22,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 6617 transitions. [2021-06-01 17:34:22,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:22,433 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:22,433 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:22,433 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable498 [2021-06-01 17:34:22,433 INFO L430 AbstractCegarLoop]: === Iteration 500 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:22,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:22,434 INFO L82 PathProgramCache]: Analyzing trace with hash 2022934299, now seen corresponding path program 496 times [2021-06-01 17:34:22,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:22,434 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250217196] [2021-06-01 17:34:22,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:22,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:22,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:22,508 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:22,508 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250217196] [2021-06-01 17:34:22,508 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250217196] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:22,508 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:22,508 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:22,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575164372] [2021-06-01 17:34:22,509 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:22,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:22,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:22,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:22,509 INFO L87 Difference]: Start difference. First operand 1655 states and 6617 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:22,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:22,577 INFO L93 Difference]: Finished difference Result 3416 states and 12818 transitions. [2021-06-01 17:34:22,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:22,577 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:22,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:22,584 INFO L225 Difference]: With dead ends: 3416 [2021-06-01 17:34:22,584 INFO L226 Difference]: Without dead ends: 3153 [2021-06-01 17:34:22,584 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:22,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3153 states. [2021-06-01 17:34:22,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3153 to 1639. [2021-06-01 17:34:22,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1639 states, 1638 states have (on average 4.0054945054945055) internal successors, (6561), 1638 states have internal predecessors, (6561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:22,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 6561 transitions. [2021-06-01 17:34:22,622 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 6561 transitions. Word has length 25 [2021-06-01 17:34:22,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:22,622 INFO L482 AbstractCegarLoop]: Abstraction has 1639 states and 6561 transitions. [2021-06-01 17:34:22,622 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:22,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 6561 transitions. [2021-06-01 17:34:22,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:22,624 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:22,624 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:22,624 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable499 [2021-06-01 17:34:22,625 INFO L430 AbstractCegarLoop]: === Iteration 501 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:22,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:22,625 INFO L82 PathProgramCache]: Analyzing trace with hash -337510629, now seen corresponding path program 497 times [2021-06-01 17:34:22,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:22,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272464562] [2021-06-01 17:34:22,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:22,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:22,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:22,699 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:22,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272464562] [2021-06-01 17:34:22,699 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272464562] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:22,699 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:22,699 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:22,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615068819] [2021-06-01 17:34:22,699 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:22,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:22,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:22,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:22,700 INFO L87 Difference]: Start difference. First operand 1639 states and 6561 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:22,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:22,768 INFO L93 Difference]: Finished difference Result 3500 states and 13174 transitions. [2021-06-01 17:34:22,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:22,768 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:22,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:22,775 INFO L225 Difference]: With dead ends: 3500 [2021-06-01 17:34:22,775 INFO L226 Difference]: Without dead ends: 3217 [2021-06-01 17:34:22,775 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:22,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3217 states. [2021-06-01 17:34:22,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3217 to 1667. [2021-06-01 17:34:22,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1666 states have (on average 3.9909963985594237) internal successors, (6649), 1666 states have internal predecessors, (6649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:22,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 6649 transitions. [2021-06-01 17:34:22,815 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 6649 transitions. Word has length 25 [2021-06-01 17:34:22,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:22,815 INFO L482 AbstractCegarLoop]: Abstraction has 1667 states and 6649 transitions. [2021-06-01 17:34:22,815 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:22,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 6649 transitions. [2021-06-01 17:34:22,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:22,818 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:22,818 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:22,818 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable500 [2021-06-01 17:34:22,818 INFO L430 AbstractCegarLoop]: === Iteration 502 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:22,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:22,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1914119673, now seen corresponding path program 498 times [2021-06-01 17:34:22,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:22,818 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017403623] [2021-06-01 17:34:22,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:22,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:22,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:22,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017403623] [2021-06-01 17:34:22,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017403623] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:22,894 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:22,894 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:22,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988459243] [2021-06-01 17:34:22,894 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:22,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:22,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:22,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:22,894 INFO L87 Difference]: Start difference. First operand 1667 states and 6649 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:22,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:22,962 INFO L93 Difference]: Finished difference Result 3464 states and 12998 transitions. [2021-06-01 17:34:22,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:22,963 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:22,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:22,969 INFO L225 Difference]: With dead ends: 3464 [2021-06-01 17:34:22,969 INFO L226 Difference]: Without dead ends: 3181 [2021-06-01 17:34:22,969 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:22,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3181 states. [2021-06-01 17:34:23,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3181 to 1631. [2021-06-01 17:34:23,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1630 states have (on average 4.0104294478527605) internal successors, (6537), 1630 states have internal predecessors, (6537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:23,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 6537 transitions. [2021-06-01 17:34:23,008 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 6537 transitions. Word has length 25 [2021-06-01 17:34:23,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:23,008 INFO L482 AbstractCegarLoop]: Abstraction has 1631 states and 6537 transitions. [2021-06-01 17:34:23,008 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:23,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 6537 transitions. [2021-06-01 17:34:23,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:23,011 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:23,011 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:23,011 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable501 [2021-06-01 17:34:23,011 INFO L430 AbstractCegarLoop]: === Iteration 503 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:23,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:23,011 INFO L82 PathProgramCache]: Analyzing trace with hash -671272067, now seen corresponding path program 499 times [2021-06-01 17:34:23,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:23,011 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704375482] [2021-06-01 17:34:23,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:23,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:23,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:23,086 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:23,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704375482] [2021-06-01 17:34:23,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704375482] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:23,086 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:23,086 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:23,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312234421] [2021-06-01 17:34:23,086 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:23,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:23,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:23,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:23,087 INFO L87 Difference]: Start difference. First operand 1631 states and 6537 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:23,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:23,152 INFO L93 Difference]: Finished difference Result 3632 states and 13744 transitions. [2021-06-01 17:34:23,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:23,153 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:23,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:23,159 INFO L225 Difference]: With dead ends: 3632 [2021-06-01 17:34:23,159 INFO L226 Difference]: Without dead ends: 3347 [2021-06-01 17:34:23,160 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:23,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3347 states. [2021-06-01 17:34:23,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3347 to 1691. [2021-06-01 17:34:23,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1691 states, 1690 states have (on average 3.997041420118343) internal successors, (6755), 1690 states have internal predecessors, (6755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:23,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 6755 transitions. [2021-06-01 17:34:23,200 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 6755 transitions. Word has length 25 [2021-06-01 17:34:23,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:23,200 INFO L482 AbstractCegarLoop]: Abstraction has 1691 states and 6755 transitions. [2021-06-01 17:34:23,200 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:23,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 6755 transitions. [2021-06-01 17:34:23,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:23,202 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:23,202 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:23,202 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable502 [2021-06-01 17:34:23,202 INFO L430 AbstractCegarLoop]: === Iteration 504 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:23,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:23,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1580358235, now seen corresponding path program 500 times [2021-06-01 17:34:23,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:23,202 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017706155] [2021-06-01 17:34:23,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:23,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:23,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:23,282 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:23,282 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017706155] [2021-06-01 17:34:23,282 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017706155] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:23,282 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:23,282 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:23,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404353299] [2021-06-01 17:34:23,282 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:23,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:23,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:23,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:23,282 INFO L87 Difference]: Start difference. First operand 1691 states and 6755 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:23,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:23,347 INFO L93 Difference]: Finished difference Result 3630 states and 13693 transitions. [2021-06-01 17:34:23,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:23,347 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:23,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:23,354 INFO L225 Difference]: With dead ends: 3630 [2021-06-01 17:34:23,354 INFO L226 Difference]: Without dead ends: 3301 [2021-06-01 17:34:23,354 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:23,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3301 states. [2021-06-01 17:34:23,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3301 to 1645. [2021-06-01 17:34:23,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1644 states have (on average 4.007299270072993) internal successors, (6588), 1644 states have internal predecessors, (6588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:23,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 6588 transitions. [2021-06-01 17:34:23,393 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 6588 transitions. Word has length 25 [2021-06-01 17:34:23,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:23,393 INFO L482 AbstractCegarLoop]: Abstraction has 1645 states and 6588 transitions. [2021-06-01 17:34:23,394 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:23,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 6588 transitions. [2021-06-01 17:34:23,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:23,396 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:23,396 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:23,396 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable503 [2021-06-01 17:34:23,396 INFO L430 AbstractCegarLoop]: === Iteration 505 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:23,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:23,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1518069029, now seen corresponding path program 501 times [2021-06-01 17:34:23,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:23,396 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683587978] [2021-06-01 17:34:23,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:23,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:23,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:23,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:23,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683587978] [2021-06-01 17:34:23,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683587978] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:23,470 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:23,470 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:23,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076471275] [2021-06-01 17:34:23,470 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:23,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:23,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:23,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:23,471 INFO L87 Difference]: Start difference. First operand 1645 states and 6588 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:23,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:23,539 INFO L93 Difference]: Finished difference Result 3578 states and 13499 transitions. [2021-06-01 17:34:23,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:23,540 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:23,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:23,546 INFO L225 Difference]: With dead ends: 3578 [2021-06-01 17:34:23,546 INFO L226 Difference]: Without dead ends: 3293 [2021-06-01 17:34:23,546 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:23,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3293 states. [2021-06-01 17:34:23,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3293 to 1673. [2021-06-01 17:34:23,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1673 states, 1672 states have (on average 3.992822966507177) internal successors, (6676), 1672 states have internal predecessors, (6676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:23,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 6676 transitions. [2021-06-01 17:34:23,586 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 6676 transitions. Word has length 25 [2021-06-01 17:34:23,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:23,586 INFO L482 AbstractCegarLoop]: Abstraction has 1673 states and 6676 transitions. [2021-06-01 17:34:23,586 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:23,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 6676 transitions. [2021-06-01 17:34:23,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:23,588 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:23,588 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:23,588 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable504 [2021-06-01 17:34:23,588 INFO L430 AbstractCegarLoop]: === Iteration 506 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:23,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:23,589 INFO L82 PathProgramCache]: Analyzing trace with hash -325602597, now seen corresponding path program 502 times [2021-06-01 17:34:23,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:23,589 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801478294] [2021-06-01 17:34:23,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:23,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:23,663 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:23,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801478294] [2021-06-01 17:34:23,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801478294] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:23,663 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:23,663 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:23,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755716801] [2021-06-01 17:34:23,663 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:23,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:23,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:23,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:23,663 INFO L87 Difference]: Start difference. First operand 1673 states and 6676 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:23,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:23,729 INFO L93 Difference]: Finished difference Result 3540 states and 13318 transitions. [2021-06-01 17:34:23,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:23,730 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:23,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:23,736 INFO L225 Difference]: With dead ends: 3540 [2021-06-01 17:34:23,736 INFO L226 Difference]: Without dead ends: 3265 [2021-06-01 17:34:23,736 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:23,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3265 states. [2021-06-01 17:34:23,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3265 to 1645. [2021-06-01 17:34:23,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1644 states have (on average 3.9987834549878345) internal successors, (6574), 1644 states have internal predecessors, (6574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:23,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 6574 transitions. [2021-06-01 17:34:23,776 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 6574 transitions. Word has length 25 [2021-06-01 17:34:23,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:23,776 INFO L482 AbstractCegarLoop]: Abstraction has 1645 states and 6574 transitions. [2021-06-01 17:34:23,776 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:23,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 6574 transitions. [2021-06-01 17:34:23,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:23,778 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:23,778 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:23,778 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable505 [2021-06-01 17:34:23,778 INFO L430 AbstractCegarLoop]: === Iteration 507 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:23,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:23,779 INFO L82 PathProgramCache]: Analyzing trace with hash -535721415, now seen corresponding path program 503 times [2021-06-01 17:34:23,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:23,779 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195425366] [2021-06-01 17:34:23,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:23,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:23,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:23,855 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:23,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195425366] [2021-06-01 17:34:23,855 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195425366] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:23,855 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:23,855 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:23,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787892804] [2021-06-01 17:34:23,855 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:23,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:23,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:23,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:23,855 INFO L87 Difference]: Start difference. First operand 1645 states and 6574 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:23,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:23,920 INFO L93 Difference]: Finished difference Result 3574 states and 13475 transitions. [2021-06-01 17:34:23,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:23,921 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:23,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:23,927 INFO L225 Difference]: With dead ends: 3574 [2021-06-01 17:34:23,927 INFO L226 Difference]: Without dead ends: 3291 [2021-06-01 17:34:23,927 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:23,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3291 states. [2021-06-01 17:34:23,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3291 to 1673. [2021-06-01 17:34:23,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1673 states, 1672 states have (on average 3.9844497607655502) internal successors, (6662), 1672 states have internal predecessors, (6662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:23,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 6662 transitions. [2021-06-01 17:34:23,978 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 6662 transitions. Word has length 25 [2021-06-01 17:34:23,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:23,978 INFO L482 AbstractCegarLoop]: Abstraction has 1673 states and 6662 transitions. [2021-06-01 17:34:23,978 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:23,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 6662 transitions. [2021-06-01 17:34:23,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:23,981 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:23,981 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:23,981 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable506 [2021-06-01 17:34:23,981 INFO L430 AbstractCegarLoop]: === Iteration 508 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:23,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:23,981 INFO L82 PathProgramCache]: Analyzing trace with hash 545341211, now seen corresponding path program 504 times [2021-06-01 17:34:23,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:23,981 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816378944] [2021-06-01 17:34:23,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:24,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:24,069 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:24,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816378944] [2021-06-01 17:34:24,069 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816378944] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:24,069 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:24,069 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:24,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023255055] [2021-06-01 17:34:24,069 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:24,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:24,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:24,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:24,070 INFO L87 Difference]: Start difference. First operand 1673 states and 6662 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:24,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:24,158 INFO L93 Difference]: Finished difference Result 3538 states and 13299 transitions. [2021-06-01 17:34:24,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:24,159 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:24,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:24,167 INFO L225 Difference]: With dead ends: 3538 [2021-06-01 17:34:24,168 INFO L226 Difference]: Without dead ends: 3245 [2021-06-01 17:34:24,168 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:24,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3245 states. [2021-06-01 17:34:24,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3245 to 1627. [2021-06-01 17:34:24,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1627 states, 1626 states have (on average 4.014145141451414) internal successors, (6527), 1626 states have internal predecessors, (6527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:24,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1627 states to 1627 states and 6527 transitions. [2021-06-01 17:34:24,224 INFO L78 Accepts]: Start accepts. Automaton has 1627 states and 6527 transitions. Word has length 25 [2021-06-01 17:34:24,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:24,224 INFO L482 AbstractCegarLoop]: Abstraction has 1627 states and 6527 transitions. [2021-06-01 17:34:24,224 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:24,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1627 states and 6527 transitions. [2021-06-01 17:34:24,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:24,227 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:24,227 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:24,227 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable507 [2021-06-01 17:34:24,227 INFO L430 AbstractCegarLoop]: === Iteration 509 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:24,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:24,227 INFO L82 PathProgramCache]: Analyzing trace with hash 407122489, now seen corresponding path program 505 times [2021-06-01 17:34:24,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:24,227 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541248397] [2021-06-01 17:34:24,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:24,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:24,330 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:24,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541248397] [2021-06-01 17:34:24,331 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541248397] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:24,331 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:24,331 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:24,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482566607] [2021-06-01 17:34:24,331 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:24,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:24,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:24,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:24,331 INFO L87 Difference]: Start difference. First operand 1627 states and 6527 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:24,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:24,404 INFO L93 Difference]: Finished difference Result 3558 states and 13459 transitions. [2021-06-01 17:34:24,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:24,404 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:24,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:24,413 INFO L225 Difference]: With dead ends: 3558 [2021-06-01 17:34:24,413 INFO L226 Difference]: Without dead ends: 3311 [2021-06-01 17:34:24,413 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:24,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3311 states. [2021-06-01 17:34:24,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3311 to 1655. [2021-06-01 17:34:24,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1655 states, 1654 states have (on average 3.999395405078597) internal successors, (6615), 1654 states have internal predecessors, (6615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:24,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 6615 transitions. [2021-06-01 17:34:24,469 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 6615 transitions. Word has length 25 [2021-06-01 17:34:24,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:24,469 INFO L482 AbstractCegarLoop]: Abstraction has 1655 states and 6615 transitions. [2021-06-01 17:34:24,469 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:24,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 6615 transitions. [2021-06-01 17:34:24,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:24,472 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:24,472 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:24,472 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable508 [2021-06-01 17:34:24,472 INFO L430 AbstractCegarLoop]: === Iteration 510 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:24,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:24,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1182812261, now seen corresponding path program 506 times [2021-06-01 17:34:24,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:24,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345631041] [2021-06-01 17:34:24,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:24,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:24,573 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:24,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345631041] [2021-06-01 17:34:24,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345631041] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:24,573 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:24,573 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:24,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651477520] [2021-06-01 17:34:24,573 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:24,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:24,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:24,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:24,573 INFO L87 Difference]: Start difference. First operand 1655 states and 6615 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:24,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:24,648 INFO L93 Difference]: Finished difference Result 3596 states and 13584 transitions. [2021-06-01 17:34:24,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:24,649 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:24,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:24,655 INFO L225 Difference]: With dead ends: 3596 [2021-06-01 17:34:24,655 INFO L226 Difference]: Without dead ends: 3283 [2021-06-01 17:34:24,655 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 116.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:24,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3283 states. [2021-06-01 17:34:24,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3283 to 1627. [2021-06-01 17:34:24,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1627 states, 1626 states have (on average 4.0055350553505535) internal successors, (6513), 1626 states have internal predecessors, (6513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:24,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1627 states to 1627 states and 6513 transitions. [2021-06-01 17:34:24,695 INFO L78 Accepts]: Start accepts. Automaton has 1627 states and 6513 transitions. Word has length 25 [2021-06-01 17:34:24,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:24,695 INFO L482 AbstractCegarLoop]: Abstraction has 1627 states and 6513 transitions. [2021-06-01 17:34:24,696 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:24,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1627 states and 6513 transitions. [2021-06-01 17:34:24,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:24,698 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:24,698 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:24,698 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable509 [2021-06-01 17:34:24,698 INFO L430 AbstractCegarLoop]: === Iteration 511 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:24,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:24,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1488185115, now seen corresponding path program 507 times [2021-06-01 17:34:24,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:24,698 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676618566] [2021-06-01 17:34:24,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:24,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:24,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:24,792 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:24,792 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676618566] [2021-06-01 17:34:24,792 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676618566] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:24,792 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:24,792 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:24,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769101175] [2021-06-01 17:34:24,792 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:24,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:24,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:24,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:24,793 INFO L87 Difference]: Start difference. First operand 1627 states and 6513 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:24,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:24,847 INFO L93 Difference]: Finished difference Result 3556 states and 13440 transitions. [2021-06-01 17:34:24,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:24,847 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:24,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:24,854 INFO L225 Difference]: With dead ends: 3556 [2021-06-01 17:34:24,854 INFO L226 Difference]: Without dead ends: 3309 [2021-06-01 17:34:24,854 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:24,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3309 states. [2021-06-01 17:34:24,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3309 to 1655. [2021-06-01 17:34:24,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1655 states, 1654 states have (on average 3.9909310761789603) internal successors, (6601), 1654 states have internal predecessors, (6601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:24,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 6601 transitions. [2021-06-01 17:34:24,893 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 6601 transitions. Word has length 25 [2021-06-01 17:34:24,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:24,894 INFO L482 AbstractCegarLoop]: Abstraction has 1655 states and 6601 transitions. [2021-06-01 17:34:24,894 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:24,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 6601 transitions. [2021-06-01 17:34:24,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:24,896 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:24,896 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:24,896 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable510 [2021-06-01 17:34:24,896 INFO L430 AbstractCegarLoop]: === Iteration 512 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:24,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:24,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1798484197, now seen corresponding path program 508 times [2021-06-01 17:34:24,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:24,897 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256487475] [2021-06-01 17:34:24,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:24,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:24,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:24,989 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:24,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256487475] [2021-06-01 17:34:24,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256487475] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:24,989 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:24,989 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:24,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929762615] [2021-06-01 17:34:24,993 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:24,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:24,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:24,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:24,994 INFO L87 Difference]: Start difference. First operand 1655 states and 6601 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:25,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:25,064 INFO L93 Difference]: Finished difference Result 3592 states and 13560 transitions. [2021-06-01 17:34:25,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:25,064 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:25,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:25,071 INFO L225 Difference]: With dead ends: 3592 [2021-06-01 17:34:25,071 INFO L226 Difference]: Without dead ends: 3281 [2021-06-01 17:34:25,072 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:25,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2021-06-01 17:34:25,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 1627. [2021-06-01 17:34:25,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1627 states, 1626 states have (on average 3.9969249692496924) internal successors, (6499), 1626 states have internal predecessors, (6499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:25,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1627 states to 1627 states and 6499 transitions. [2021-06-01 17:34:25,114 INFO L78 Accepts]: Start accepts. Automaton has 1627 states and 6499 transitions. Word has length 25 [2021-06-01 17:34:25,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:25,114 INFO L482 AbstractCegarLoop]: Abstraction has 1627 states and 6499 transitions. [2021-06-01 17:34:25,114 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:25,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1627 states and 6499 transitions. [2021-06-01 17:34:25,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:25,116 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:25,116 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:25,117 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable511 [2021-06-01 17:34:25,117 INFO L430 AbstractCegarLoop]: === Iteration 513 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:25,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:25,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1389620227, now seen corresponding path program 509 times [2021-06-01 17:34:25,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:25,117 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927969816] [2021-06-01 17:34:25,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:25,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:25,200 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:25,200 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927969816] [2021-06-01 17:34:25,201 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927969816] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:25,201 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:25,201 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:25,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111509358] [2021-06-01 17:34:25,201 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:25,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:25,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:25,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:25,202 INFO L87 Difference]: Start difference. First operand 1627 states and 6499 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:25,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:25,276 INFO L93 Difference]: Finished difference Result 3650 states and 13815 transitions. [2021-06-01 17:34:25,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:25,277 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:25,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:25,283 INFO L225 Difference]: With dead ends: 3650 [2021-06-01 17:34:25,283 INFO L226 Difference]: Without dead ends: 3365 [2021-06-01 17:34:25,283 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:25,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3365 states. [2021-06-01 17:34:25,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3365 to 1673. [2021-06-01 17:34:25,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1673 states, 1672 states have (on average 3.978468899521531) internal successors, (6652), 1672 states have internal predecessors, (6652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:25,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 6652 transitions. [2021-06-01 17:34:25,323 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 6652 transitions. Word has length 25 [2021-06-01 17:34:25,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:25,324 INFO L482 AbstractCegarLoop]: Abstraction has 1673 states and 6652 transitions. [2021-06-01 17:34:25,324 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:25,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 6652 transitions. [2021-06-01 17:34:25,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:25,326 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:25,326 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:25,326 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable512 [2021-06-01 17:34:25,326 INFO L430 AbstractCegarLoop]: === Iteration 514 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:25,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:25,326 INFO L82 PathProgramCache]: Analyzing trace with hash 862010075, now seen corresponding path program 510 times [2021-06-01 17:34:25,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:25,326 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307387798] [2021-06-01 17:34:25,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:25,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:25,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:25,407 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:25,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307387798] [2021-06-01 17:34:25,407 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307387798] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:25,407 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:25,408 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:25,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348619387] [2021-06-01 17:34:25,408 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:25,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:25,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:25,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:25,408 INFO L87 Difference]: Start difference. First operand 1673 states and 6652 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:25,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:25,478 INFO L93 Difference]: Finished difference Result 3648 states and 13764 transitions. [2021-06-01 17:34:25,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:25,479 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:25,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:25,485 INFO L225 Difference]: With dead ends: 3648 [2021-06-01 17:34:25,485 INFO L226 Difference]: Without dead ends: 3305 [2021-06-01 17:34:25,485 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:25,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3305 states. [2021-06-01 17:34:25,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3305 to 1613. [2021-06-01 17:34:25,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1613 states, 1612 states have (on average 4.004962779156328) internal successors, (6456), 1612 states have internal predecessors, (6456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:25,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 6456 transitions. [2021-06-01 17:34:25,525 INFO L78 Accepts]: Start accepts. Automaton has 1613 states and 6456 transitions. Word has length 25 [2021-06-01 17:34:25,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:25,525 INFO L482 AbstractCegarLoop]: Abstraction has 1613 states and 6456 transitions. [2021-06-01 17:34:25,526 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:25,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1613 states and 6456 transitions. [2021-06-01 17:34:25,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:25,528 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:25,528 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:25,528 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable513 [2021-06-01 17:34:25,528 INFO L430 AbstractCegarLoop]: === Iteration 515 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:25,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:25,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1500092985, now seen corresponding path program 511 times [2021-06-01 17:34:25,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:25,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662432044] [2021-06-01 17:34:25,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:25,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:25,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:25,636 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:25,636 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662432044] [2021-06-01 17:34:25,636 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662432044] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:25,636 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:25,636 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:25,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483233235] [2021-06-01 17:34:25,636 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:25,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:25,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:25,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:25,637 INFO L87 Difference]: Start difference. First operand 1613 states and 6456 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:25,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:25,697 INFO L93 Difference]: Finished difference Result 3494 states and 13193 transitions. [2021-06-01 17:34:25,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:25,698 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:25,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:25,704 INFO L225 Difference]: With dead ends: 3494 [2021-06-01 17:34:25,704 INFO L226 Difference]: Without dead ends: 3247 [2021-06-01 17:34:25,704 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:25,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3247 states. [2021-06-01 17:34:25,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3247 to 1653. [2021-06-01 17:34:25,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1653 states, 1652 states have (on average 3.9951573849878934) internal successors, (6600), 1652 states have internal predecessors, (6600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:25,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1653 states to 1653 states and 6600 transitions. [2021-06-01 17:34:25,743 INFO L78 Accepts]: Start accepts. Automaton has 1653 states and 6600 transitions. Word has length 25 [2021-06-01 17:34:25,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:25,743 INFO L482 AbstractCegarLoop]: Abstraction has 1653 states and 6600 transitions. [2021-06-01 17:34:25,743 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:25,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1653 states and 6600 transitions. [2021-06-01 17:34:25,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:25,745 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:25,745 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:25,745 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable514 [2021-06-01 17:34:25,745 INFO L430 AbstractCegarLoop]: === Iteration 516 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:25,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:25,746 INFO L82 PathProgramCache]: Analyzing trace with hash -89841765, now seen corresponding path program 512 times [2021-06-01 17:34:25,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:25,746 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85320110] [2021-06-01 17:34:25,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:25,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:25,837 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:25,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85320110] [2021-06-01 17:34:25,837 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85320110] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:25,837 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:25,837 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:25,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500542520] [2021-06-01 17:34:25,837 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:25,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:25,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:25,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:25,837 INFO L87 Difference]: Start difference. First operand 1653 states and 6600 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:25,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:25,904 INFO L93 Difference]: Finished difference Result 3532 states and 13318 transitions. [2021-06-01 17:34:25,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:25,905 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:25,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:25,911 INFO L225 Difference]: With dead ends: 3532 [2021-06-01 17:34:25,911 INFO L226 Difference]: Without dead ends: 3219 [2021-06-01 17:34:25,911 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:25,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2021-06-01 17:34:25,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 1625. [2021-06-01 17:34:25,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1625 states, 1624 states have (on average 4.002463054187192) internal successors, (6500), 1624 states have internal predecessors, (6500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:25,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1625 states to 1625 states and 6500 transitions. [2021-06-01 17:34:25,950 INFO L78 Accepts]: Start accepts. Automaton has 1625 states and 6500 transitions. Word has length 25 [2021-06-01 17:34:25,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:25,950 INFO L482 AbstractCegarLoop]: Abstraction has 1625 states and 6500 transitions. [2021-06-01 17:34:25,950 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:25,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1625 states and 6500 transitions. [2021-06-01 17:34:25,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:25,952 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:25,952 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:25,952 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable515 [2021-06-01 17:34:25,952 INFO L430 AbstractCegarLoop]: === Iteration 517 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:25,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:25,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1549660729, now seen corresponding path program 513 times [2021-06-01 17:34:25,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:25,952 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164112066] [2021-06-01 17:34:25,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:25,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:26,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:26,037 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:26,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164112066] [2021-06-01 17:34:26,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164112066] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:26,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:26,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:26,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154658282] [2021-06-01 17:34:26,037 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:26,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:26,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:26,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:26,038 INFO L87 Difference]: Start difference. First operand 1625 states and 6500 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:26,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:26,092 INFO L93 Difference]: Finished difference Result 3412 states and 12880 transitions. [2021-06-01 17:34:26,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:26,092 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:26,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:26,099 INFO L225 Difference]: With dead ends: 3412 [2021-06-01 17:34:26,099 INFO L226 Difference]: Without dead ends: 3165 [2021-06-01 17:34:26,099 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:26,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3165 states. [2021-06-01 17:34:26,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3165 to 1649. [2021-06-01 17:34:26,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1649 states, 1648 states have (on average 3.9902912621359223) internal successors, (6576), 1648 states have internal predecessors, (6576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:26,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 6576 transitions. [2021-06-01 17:34:26,138 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 6576 transitions. Word has length 25 [2021-06-01 17:34:26,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:26,138 INFO L482 AbstractCegarLoop]: Abstraction has 1649 states and 6576 transitions. [2021-06-01 17:34:26,138 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:26,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 6576 transitions. [2021-06-01 17:34:26,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:26,140 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:26,140 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:26,140 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable516 [2021-06-01 17:34:26,140 INFO L430 AbstractCegarLoop]: === Iteration 518 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:26,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:26,140 INFO L82 PathProgramCache]: Analyzing trace with hash -392611271, now seen corresponding path program 514 times [2021-06-01 17:34:26,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:26,140 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61226262] [2021-06-01 17:34:26,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:26,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:26,223 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:26,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61226262] [2021-06-01 17:34:26,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61226262] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:26,223 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:26,224 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:26,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751055173] [2021-06-01 17:34:26,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:26,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:26,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:26,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:26,224 INFO L87 Difference]: Start difference. First operand 1649 states and 6576 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:26,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:26,292 INFO L93 Difference]: Finished difference Result 3236 states and 12303 transitions. [2021-06-01 17:34:26,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:26,292 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:26,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:26,298 INFO L225 Difference]: With dead ends: 3236 [2021-06-01 17:34:26,298 INFO L226 Difference]: Without dead ends: 2949 [2021-06-01 17:34:26,298 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:26,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2949 states. [2021-06-01 17:34:26,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2949 to 1625. [2021-06-01 17:34:26,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1625 states, 1624 states have (on average 3.9950738916256157) internal successors, (6488), 1624 states have internal predecessors, (6488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:26,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1625 states to 1625 states and 6488 transitions. [2021-06-01 17:34:26,336 INFO L78 Accepts]: Start accepts. Automaton has 1625 states and 6488 transitions. Word has length 25 [2021-06-01 17:34:26,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:26,336 INFO L482 AbstractCegarLoop]: Abstraction has 1625 states and 6488 transitions. [2021-06-01 17:34:26,336 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:26,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1625 states and 6488 transitions. [2021-06-01 17:34:26,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:26,338 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:26,338 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:26,338 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable517 [2021-06-01 17:34:26,338 INFO L430 AbstractCegarLoop]: === Iteration 519 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:26,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:26,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1328144613, now seen corresponding path program 515 times [2021-06-01 17:34:26,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:26,338 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521019937] [2021-06-01 17:34:26,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:26,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:26,433 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:26,433 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521019937] [2021-06-01 17:34:26,433 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521019937] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:26,433 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:26,433 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:26,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157487300] [2021-06-01 17:34:26,433 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:26,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:26,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:26,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:26,433 INFO L87 Difference]: Start difference. First operand 1625 states and 6488 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:26,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:26,510 INFO L93 Difference]: Finished difference Result 3462 states and 13077 transitions. [2021-06-01 17:34:26,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:26,511 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:26,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:26,517 INFO L225 Difference]: With dead ends: 3462 [2021-06-01 17:34:26,517 INFO L226 Difference]: Without dead ends: 3177 [2021-06-01 17:34:26,517 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:26,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3177 states. [2021-06-01 17:34:26,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3177 to 1661. [2021-06-01 17:34:26,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1661 states, 1660 states have (on average 3.980722891566265) internal successors, (6608), 1660 states have internal predecessors, (6608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:26,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 6608 transitions. [2021-06-01 17:34:26,555 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 6608 transitions. Word has length 25 [2021-06-01 17:34:26,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:26,555 INFO L482 AbstractCegarLoop]: Abstraction has 1661 states and 6608 transitions. [2021-06-01 17:34:26,555 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:26,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 6608 transitions. [2021-06-01 17:34:26,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:26,557 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:26,557 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:26,557 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable518 [2021-06-01 17:34:26,557 INFO L430 AbstractCegarLoop]: === Iteration 520 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:26,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:26,558 INFO L82 PathProgramCache]: Analyzing trace with hash -2069096711, now seen corresponding path program 516 times [2021-06-01 17:34:26,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:26,558 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618694622] [2021-06-01 17:34:26,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:26,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:26,650 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:26,650 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618694622] [2021-06-01 17:34:26,651 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618694622] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:26,651 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:26,651 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:26,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206014632] [2021-06-01 17:34:26,651 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:26,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:26,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:26,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:26,651 INFO L87 Difference]: Start difference. First operand 1661 states and 6608 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:26,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:26,714 INFO L93 Difference]: Finished difference Result 3248 states and 12335 transitions. [2021-06-01 17:34:26,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:26,715 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:26,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:26,720 INFO L225 Difference]: With dead ends: 3248 [2021-06-01 17:34:26,720 INFO L226 Difference]: Without dead ends: 2937 [2021-06-01 17:34:26,720 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:26,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2021-06-01 17:34:26,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1613. [2021-06-01 17:34:26,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1613 states, 1612 states have (on average 4.0012406947890815) internal successors, (6450), 1612 states have internal predecessors, (6450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:26,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 6450 transitions. [2021-06-01 17:34:26,757 INFO L78 Accepts]: Start accepts. Automaton has 1613 states and 6450 transitions. Word has length 25 [2021-06-01 17:34:26,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:26,757 INFO L482 AbstractCegarLoop]: Abstraction has 1613 states and 6450 transitions. [2021-06-01 17:34:26,757 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:26,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1613 states and 6450 transitions. [2021-06-01 17:34:26,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:26,759 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:26,759 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:26,759 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable519 [2021-06-01 17:34:26,760 INFO L430 AbstractCegarLoop]: === Iteration 521 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:26,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:26,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1888097947, now seen corresponding path program 517 times [2021-06-01 17:34:26,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:26,760 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56086145] [2021-06-01 17:34:26,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:26,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:26,842 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:26,842 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56086145] [2021-06-01 17:34:26,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56086145] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:26,843 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:26,843 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:26,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043622604] [2021-06-01 17:34:26,843 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:26,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:26,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:26,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:26,843 INFO L87 Difference]: Start difference. First operand 1613 states and 6450 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:26,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:26,892 INFO L93 Difference]: Finished difference Result 3490 states and 13177 transitions. [2021-06-01 17:34:26,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:26,893 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:26,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:26,899 INFO L225 Difference]: With dead ends: 3490 [2021-06-01 17:34:26,899 INFO L226 Difference]: Without dead ends: 3243 [2021-06-01 17:34:26,899 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:26,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3243 states. [2021-06-01 17:34:26,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3243 to 1653. [2021-06-01 17:34:26,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1653 states, 1652 states have (on average 3.9915254237288136) internal successors, (6594), 1652 states have internal predecessors, (6594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:26,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1653 states to 1653 states and 6594 transitions. [2021-06-01 17:34:26,938 INFO L78 Accepts]: Start accepts. Automaton has 1653 states and 6594 transitions. Word has length 25 [2021-06-01 17:34:26,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:26,938 INFO L482 AbstractCegarLoop]: Abstraction has 1653 states and 6594 transitions. [2021-06-01 17:34:26,938 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:26,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1653 states and 6594 transitions. [2021-06-01 17:34:26,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:26,940 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:26,940 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:26,940 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable520 [2021-06-01 17:34:26,940 INFO L430 AbstractCegarLoop]: === Iteration 522 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:26,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:26,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1398571365, now seen corresponding path program 518 times [2021-06-01 17:34:26,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:26,941 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042138974] [2021-06-01 17:34:26,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:26,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:27,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:27,037 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:27,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042138974] [2021-06-01 17:34:27,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042138974] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:27,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:27,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:27,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328096497] [2021-06-01 17:34:27,037 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:27,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:27,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:27,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:27,038 INFO L87 Difference]: Start difference. First operand 1653 states and 6594 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:27,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:27,100 INFO L93 Difference]: Finished difference Result 3526 states and 13297 transitions. [2021-06-01 17:34:27,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:27,101 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:27,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:27,107 INFO L225 Difference]: With dead ends: 3526 [2021-06-01 17:34:27,107 INFO L226 Difference]: Without dead ends: 3215 [2021-06-01 17:34:27,107 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:27,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3215 states. [2021-06-01 17:34:27,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3215 to 1625. [2021-06-01 17:34:27,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1625 states, 1624 states have (on average 3.998768472906404) internal successors, (6494), 1624 states have internal predecessors, (6494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:27,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1625 states to 1625 states and 6494 transitions. [2021-06-01 17:34:27,145 INFO L78 Accepts]: Start accepts. Automaton has 1625 states and 6494 transitions. Word has length 25 [2021-06-01 17:34:27,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:27,145 INFO L482 AbstractCegarLoop]: Abstraction has 1625 states and 6494 transitions. [2021-06-01 17:34:27,145 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:27,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1625 states and 6494 transitions. [2021-06-01 17:34:27,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:27,147 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:27,147 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:27,148 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable521 [2021-06-01 17:34:27,148 INFO L430 AbstractCegarLoop]: === Iteration 523 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:27,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:27,148 INFO L82 PathProgramCache]: Analyzing trace with hash -227981703, now seen corresponding path program 519 times [2021-06-01 17:34:27,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:27,148 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488229080] [2021-06-01 17:34:27,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:27,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:27,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:27,224 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:27,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488229080] [2021-06-01 17:34:27,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488229080] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:27,224 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:27,225 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:27,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884925165] [2021-06-01 17:34:27,225 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:27,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:27,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:27,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:27,225 INFO L87 Difference]: Start difference. First operand 1625 states and 6494 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:27,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:27,275 INFO L93 Difference]: Finished difference Result 3410 states and 12869 transitions. [2021-06-01 17:34:27,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:27,275 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:27,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:27,282 INFO L225 Difference]: With dead ends: 3410 [2021-06-01 17:34:27,282 INFO L226 Difference]: Without dead ends: 3163 [2021-06-01 17:34:27,282 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:27,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3163 states. [2021-06-01 17:34:27,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3163 to 1649. [2021-06-01 17:34:27,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1649 states, 1648 states have (on average 3.9866504854368934) internal successors, (6570), 1648 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:27,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 6570 transitions. [2021-06-01 17:34:27,320 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 6570 transitions. Word has length 25 [2021-06-01 17:34:27,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:27,320 INFO L482 AbstractCegarLoop]: Abstraction has 1649 states and 6570 transitions. [2021-06-01 17:34:27,320 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:27,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 6570 transitions. [2021-06-01 17:34:27,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:27,322 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:27,323 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:27,323 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable522 [2021-06-01 17:34:27,323 INFO L430 AbstractCegarLoop]: === Iteration 524 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:27,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:27,323 INFO L82 PathProgramCache]: Analyzing trace with hash -873513317, now seen corresponding path program 520 times [2021-06-01 17:34:27,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:27,323 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247493972] [2021-06-01 17:34:27,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:27,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:27,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:27,398 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:27,398 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247493972] [2021-06-01 17:34:27,398 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247493972] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:27,398 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:27,398 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:27,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30794120] [2021-06-01 17:34:27,399 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:27,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:27,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:27,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:27,399 INFO L87 Difference]: Start difference. First operand 1649 states and 6570 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:27,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:27,462 INFO L93 Difference]: Finished difference Result 3234 states and 12292 transitions. [2021-06-01 17:34:27,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:27,462 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:27,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:27,468 INFO L225 Difference]: With dead ends: 3234 [2021-06-01 17:34:27,468 INFO L226 Difference]: Without dead ends: 2947 [2021-06-01 17:34:27,468 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:27,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2021-06-01 17:34:27,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 1625. [2021-06-01 17:34:27,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1625 states, 1624 states have (on average 3.9913793103448274) internal successors, (6482), 1624 states have internal predecessors, (6482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:27,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1625 states to 1625 states and 6482 transitions. [2021-06-01 17:34:27,505 INFO L78 Accepts]: Start accepts. Automaton has 1625 states and 6482 transitions. Word has length 25 [2021-06-01 17:34:27,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:27,505 INFO L482 AbstractCegarLoop]: Abstraction has 1625 states and 6482 transitions. [2021-06-01 17:34:27,505 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:27,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1625 states and 6482 transitions. [2021-06-01 17:34:27,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:27,507 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:27,507 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:27,507 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable523 [2021-06-01 17:34:27,507 INFO L430 AbstractCegarLoop]: === Iteration 525 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:27,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:27,507 INFO L82 PathProgramCache]: Analyzing trace with hash 388810395, now seen corresponding path program 521 times [2021-06-01 17:34:27,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:27,508 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378095333] [2021-06-01 17:34:27,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:27,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:27,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:27,581 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:27,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378095333] [2021-06-01 17:34:27,581 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378095333] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:27,581 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:27,581 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:27,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916788354] [2021-06-01 17:34:27,581 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:27,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:27,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:27,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:27,582 INFO L87 Difference]: Start difference. First operand 1625 states and 6482 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:27,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:27,644 INFO L93 Difference]: Finished difference Result 3458 states and 13061 transitions. [2021-06-01 17:34:27,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:27,645 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:27,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:27,651 INFO L225 Difference]: With dead ends: 3458 [2021-06-01 17:34:27,651 INFO L226 Difference]: Without dead ends: 3175 [2021-06-01 17:34:27,651 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:27,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3175 states. [2021-06-01 17:34:27,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3175 to 1661. [2021-06-01 17:34:27,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1661 states, 1660 states have (on average 3.97710843373494) internal successors, (6602), 1660 states have internal predecessors, (6602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:27,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 6602 transitions. [2021-06-01 17:34:27,690 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 6602 transitions. Word has length 25 [2021-06-01 17:34:27,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:27,690 INFO L482 AbstractCegarLoop]: Abstraction has 1661 states and 6602 transitions. [2021-06-01 17:34:27,690 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:27,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 6602 transitions. [2021-06-01 17:34:27,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:27,692 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:27,692 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:27,692 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable524 [2021-06-01 17:34:27,692 INFO L430 AbstractCegarLoop]: === Iteration 526 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:27,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:27,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1003334151, now seen corresponding path program 522 times [2021-06-01 17:34:27,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:27,692 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404455243] [2021-06-01 17:34:27,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:27,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:27,767 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:27,767 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404455243] [2021-06-01 17:34:27,767 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404455243] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:27,767 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:27,767 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:27,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443012796] [2021-06-01 17:34:27,767 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:27,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:27,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:27,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:27,767 INFO L87 Difference]: Start difference. First operand 1661 states and 6602 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:27,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:27,835 INFO L93 Difference]: Finished difference Result 3246 states and 12324 transitions. [2021-06-01 17:34:27,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:27,836 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:27,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:27,841 INFO L225 Difference]: With dead ends: 3246 [2021-06-01 17:34:27,841 INFO L226 Difference]: Without dead ends: 2935 [2021-06-01 17:34:27,842 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:27,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2021-06-01 17:34:27,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 1613. [2021-06-01 17:34:27,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1613 states, 1612 states have (on average 3.997518610421836) internal successors, (6444), 1612 states have internal predecessors, (6444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:27,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 6444 transitions. [2021-06-01 17:34:27,879 INFO L78 Accepts]: Start accepts. Automaton has 1613 states and 6444 transitions. Word has length 25 [2021-06-01 17:34:27,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:27,879 INFO L482 AbstractCegarLoop]: Abstraction has 1613 states and 6444 transitions. [2021-06-01 17:34:27,879 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:27,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1613 states and 6444 transitions. [2021-06-01 17:34:27,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:27,881 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:27,881 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:27,881 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable525 [2021-06-01 17:34:27,881 INFO L430 AbstractCegarLoop]: === Iteration 527 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:27,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:27,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1682765059, now seen corresponding path program 523 times [2021-06-01 17:34:27,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:27,882 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637056960] [2021-06-01 17:34:27,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:27,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:27,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:27,956 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:27,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637056960] [2021-06-01 17:34:27,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637056960] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:27,956 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:27,956 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:27,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205875114] [2021-06-01 17:34:27,956 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:27,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:27,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:27,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:27,957 INFO L87 Difference]: Start difference. First operand 1613 states and 6444 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:28,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:28,021 INFO L93 Difference]: Finished difference Result 3640 states and 13800 transitions. [2021-06-01 17:34:28,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:28,021 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:28,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:28,028 INFO L225 Difference]: With dead ends: 3640 [2021-06-01 17:34:28,028 INFO L226 Difference]: Without dead ends: 3355 [2021-06-01 17:34:28,028 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:28,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3355 states. [2021-06-01 17:34:28,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3355 to 1677. [2021-06-01 17:34:28,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1677 states, 1676 states have (on average 3.988066825775656) internal successors, (6684), 1676 states have internal predecessors, (6684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:28,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1677 states to 1677 states and 6684 transitions. [2021-06-01 17:34:28,068 INFO L78 Accepts]: Start accepts. Automaton has 1677 states and 6684 transitions. Word has length 25 [2021-06-01 17:34:28,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:28,068 INFO L482 AbstractCegarLoop]: Abstraction has 1677 states and 6684 transitions. [2021-06-01 17:34:28,068 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:28,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1677 states and 6684 transitions. [2021-06-01 17:34:28,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:28,070 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:28,070 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:28,071 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable526 [2021-06-01 17:34:28,071 INFO L430 AbstractCegarLoop]: === Iteration 528 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:28,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:28,071 INFO L82 PathProgramCache]: Analyzing trace with hash 568865243, now seen corresponding path program 524 times [2021-06-01 17:34:28,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:28,071 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516899110] [2021-06-01 17:34:28,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:28,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:28,144 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:28,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516899110] [2021-06-01 17:34:28,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516899110] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:28,144 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:28,144 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:28,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174015544] [2021-06-01 17:34:28,145 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:28,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:28,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:28,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:28,145 INFO L87 Difference]: Start difference. First operand 1677 states and 6684 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:28,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:28,208 INFO L93 Difference]: Finished difference Result 3638 states and 13749 transitions. [2021-06-01 17:34:28,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:28,208 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:28,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:28,214 INFO L225 Difference]: With dead ends: 3638 [2021-06-01 17:34:28,215 INFO L226 Difference]: Without dead ends: 3309 [2021-06-01 17:34:28,215 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:28,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3309 states. [2021-06-01 17:34:28,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3309 to 1631. [2021-06-01 17:34:28,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1630 states have (on average 3.9957055214723924) internal successors, (6513), 1630 states have internal predecessors, (6513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:28,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 6513 transitions. [2021-06-01 17:34:28,253 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 6513 transitions. Word has length 25 [2021-06-01 17:34:28,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:28,254 INFO L482 AbstractCegarLoop]: Abstraction has 1631 states and 6513 transitions. [2021-06-01 17:34:28,254 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:28,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 6513 transitions. [2021-06-01 17:34:28,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:28,256 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:28,256 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:28,256 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable527 [2021-06-01 17:34:28,256 INFO L430 AbstractCegarLoop]: === Iteration 529 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:28,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:28,256 INFO L82 PathProgramCache]: Analyzing trace with hash 496122587, now seen corresponding path program 525 times [2021-06-01 17:34:28,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:28,256 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040602244] [2021-06-01 17:34:28,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:28,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:28,340 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:28,340 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040602244] [2021-06-01 17:34:28,340 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040602244] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:28,340 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:28,340 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:28,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165504796] [2021-06-01 17:34:28,340 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:28,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:28,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:28,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:28,340 INFO L87 Difference]: Start difference. First operand 1631 states and 6513 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:28,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:28,405 INFO L93 Difference]: Finished difference Result 3516 states and 13306 transitions. [2021-06-01 17:34:28,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:28,406 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:28,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:28,412 INFO L225 Difference]: With dead ends: 3516 [2021-06-01 17:34:28,412 INFO L226 Difference]: Without dead ends: 3231 [2021-06-01 17:34:28,412 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:28,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3231 states. [2021-06-01 17:34:28,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3231 to 1667. [2021-06-01 17:34:28,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1666 states have (on average 3.9813925570228093) internal successors, (6633), 1666 states have internal predecessors, (6633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:28,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 6633 transitions. [2021-06-01 17:34:28,452 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 6633 transitions. Word has length 25 [2021-06-01 17:34:28,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:28,452 INFO L482 AbstractCegarLoop]: Abstraction has 1667 states and 6633 transitions. [2021-06-01 17:34:28,452 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:28,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 6633 transitions. [2021-06-01 17:34:28,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:28,454 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:28,454 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:28,454 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable528 [2021-06-01 17:34:28,454 INFO L430 AbstractCegarLoop]: === Iteration 530 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:28,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:28,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1051910875, now seen corresponding path program 526 times [2021-06-01 17:34:28,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:28,455 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585999656] [2021-06-01 17:34:28,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:28,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:28,541 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:28,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585999656] [2021-06-01 17:34:28,542 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585999656] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:28,542 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:28,542 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:28,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265967295] [2021-06-01 17:34:28,542 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:28,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:28,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:28,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:28,542 INFO L87 Difference]: Start difference. First operand 1667 states and 6633 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:28,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:28,614 INFO L93 Difference]: Finished difference Result 3302 states and 12564 transitions. [2021-06-01 17:34:28,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:28,614 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:28,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:28,620 INFO L225 Difference]: With dead ends: 3302 [2021-06-01 17:34:28,620 INFO L226 Difference]: Without dead ends: 3003 [2021-06-01 17:34:28,620 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:28,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3003 states. [2021-06-01 17:34:28,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3003 to 1631. [2021-06-01 17:34:28,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1630 states have (on average 3.9846625766871164) internal successors, (6495), 1630 states have internal predecessors, (6495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:28,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 6495 transitions. [2021-06-01 17:34:28,657 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 6495 transitions. Word has length 25 [2021-06-01 17:34:28,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:28,657 INFO L482 AbstractCegarLoop]: Abstraction has 1631 states and 6495 transitions. [2021-06-01 17:34:28,658 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:28,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 6495 transitions. [2021-06-01 17:34:28,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:28,660 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:28,660 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:28,660 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable529 [2021-06-01 17:34:28,660 INFO L430 AbstractCegarLoop]: === Iteration 531 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:28,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:28,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1478470201, now seen corresponding path program 527 times [2021-06-01 17:34:28,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:28,660 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769858269] [2021-06-01 17:34:28,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:28,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:28,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:28,735 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:28,735 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769858269] [2021-06-01 17:34:28,735 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769858269] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:28,735 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:28,735 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:28,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537097833] [2021-06-01 17:34:28,735 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:28,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:28,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:28,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:28,735 INFO L87 Difference]: Start difference. First operand 1631 states and 6495 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:28,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:28,801 INFO L93 Difference]: Finished difference Result 3514 states and 13283 transitions. [2021-06-01 17:34:28,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:28,801 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:28,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:28,807 INFO L225 Difference]: With dead ends: 3514 [2021-06-01 17:34:28,808 INFO L226 Difference]: Without dead ends: 3231 [2021-06-01 17:34:28,808 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:28,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3231 states. [2021-06-01 17:34:28,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3231 to 1667. [2021-06-01 17:34:28,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1666 states have (on average 3.9705882352941178) internal successors, (6615), 1666 states have internal predecessors, (6615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:28,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 6615 transitions. [2021-06-01 17:34:28,859 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 6615 transitions. Word has length 25 [2021-06-01 17:34:28,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:28,859 INFO L482 AbstractCegarLoop]: Abstraction has 1667 states and 6615 transitions. [2021-06-01 17:34:28,859 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:28,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 6615 transitions. [2021-06-01 17:34:28,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:28,861 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:28,861 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:28,861 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable530 [2021-06-01 17:34:28,861 INFO L430 AbstractCegarLoop]: === Iteration 532 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:28,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:28,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1271662235, now seen corresponding path program 528 times [2021-06-01 17:34:28,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:28,862 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158651326] [2021-06-01 17:34:28,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:28,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:28,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:28,934 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:28,934 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158651326] [2021-06-01 17:34:28,934 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158651326] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:28,934 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:28,934 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:28,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396169299] [2021-06-01 17:34:28,935 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:28,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:28,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:28,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:28,935 INFO L87 Difference]: Start difference. First operand 1667 states and 6615 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:29,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:29,009 INFO L93 Difference]: Finished difference Result 3302 states and 12546 transitions. [2021-06-01 17:34:29,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:29,009 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:29,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:29,016 INFO L225 Difference]: With dead ends: 3302 [2021-06-01 17:34:29,016 INFO L226 Difference]: Without dead ends: 2979 [2021-06-01 17:34:29,016 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:29,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2021-06-01 17:34:29,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 1607. [2021-06-01 17:34:29,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1607 states, 1606 states have (on average 4.0031133250311335) internal successors, (6429), 1606 states have internal predecessors, (6429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:29,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 6429 transitions. [2021-06-01 17:34:29,053 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 6429 transitions. Word has length 25 [2021-06-01 17:34:29,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:29,053 INFO L482 AbstractCegarLoop]: Abstraction has 1607 states and 6429 transitions. [2021-06-01 17:34:29,053 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:29,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 6429 transitions. [2021-06-01 17:34:29,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:29,055 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:29,055 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:29,055 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable531 [2021-06-01 17:34:29,055 INFO L430 AbstractCegarLoop]: === Iteration 533 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:29,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:29,055 INFO L82 PathProgramCache]: Analyzing trace with hash -382263781, now seen corresponding path program 529 times [2021-06-01 17:34:29,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:29,056 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365840200] [2021-06-01 17:34:29,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:29,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:29,137 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:29,137 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365840200] [2021-06-01 17:34:29,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365840200] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:29,137 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:29,137 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:29,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460276014] [2021-06-01 17:34:29,138 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:29,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:29,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:29,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:29,138 INFO L87 Difference]: Start difference. First operand 1607 states and 6429 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:29,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:29,190 INFO L93 Difference]: Finished difference Result 3372 states and 12644 transitions. [2021-06-01 17:34:29,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:29,190 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:29,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:29,196 INFO L225 Difference]: With dead ends: 3372 [2021-06-01 17:34:29,196 INFO L226 Difference]: Without dead ends: 3125 [2021-06-01 17:34:29,196 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 88.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:29,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2021-06-01 17:34:29,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 1635. [2021-06-01 17:34:29,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1635 states, 1634 states have (on average 3.988372093023256) internal successors, (6517), 1634 states have internal predecessors, (6517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:29,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 6517 transitions. [2021-06-01 17:34:29,234 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 6517 transitions. Word has length 25 [2021-06-01 17:34:29,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:29,234 INFO L482 AbstractCegarLoop]: Abstraction has 1635 states and 6517 transitions. [2021-06-01 17:34:29,234 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:29,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 6517 transitions. [2021-06-01 17:34:29,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:29,236 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:29,236 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:29,236 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable532 [2021-06-01 17:34:29,236 INFO L430 AbstractCegarLoop]: === Iteration 534 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:29,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:29,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1972198531, now seen corresponding path program 530 times [2021-06-01 17:34:29,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:29,237 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567905575] [2021-06-01 17:34:29,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:29,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:29,320 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:29,320 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567905575] [2021-06-01 17:34:29,320 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567905575] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:29,320 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:29,320 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:29,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609318921] [2021-06-01 17:34:29,320 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:29,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:29,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:29,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:29,321 INFO L87 Difference]: Start difference. First operand 1635 states and 6517 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:29,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:29,386 INFO L93 Difference]: Finished difference Result 3410 states and 12769 transitions. [2021-06-01 17:34:29,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:29,386 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:29,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:29,392 INFO L225 Difference]: With dead ends: 3410 [2021-06-01 17:34:29,392 INFO L226 Difference]: Without dead ends: 3097 [2021-06-01 17:34:29,392 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:29,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3097 states. [2021-06-01 17:34:29,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3097 to 1607. [2021-06-01 17:34:29,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1607 states, 1606 states have (on average 3.9981320049813203) internal successors, (6421), 1606 states have internal predecessors, (6421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:29,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 6421 transitions. [2021-06-01 17:34:29,429 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 6421 transitions. Word has length 25 [2021-06-01 17:34:29,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:29,429 INFO L482 AbstractCegarLoop]: Abstraction has 1607 states and 6421 transitions. [2021-06-01 17:34:29,429 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:29,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 6421 transitions. [2021-06-01 17:34:29,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:29,431 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:29,431 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:29,432 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable533 [2021-06-01 17:34:29,432 INFO L430 AbstractCegarLoop]: === Iteration 535 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:29,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:29,432 INFO L82 PathProgramCache]: Analyzing trace with hash -2070510053, now seen corresponding path program 531 times [2021-06-01 17:34:29,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:29,432 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433165083] [2021-06-01 17:34:29,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:29,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:29,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:29,506 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:29,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433165083] [2021-06-01 17:34:29,506 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433165083] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:29,506 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:29,506 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:29,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019661050] [2021-06-01 17:34:29,506 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:29,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:29,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:29,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:29,506 INFO L87 Difference]: Start difference. First operand 1607 states and 6421 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:29,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:29,564 INFO L93 Difference]: Finished difference Result 3322 states and 12431 transitions. [2021-06-01 17:34:29,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:29,564 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:29,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:29,570 INFO L225 Difference]: With dead ends: 3322 [2021-06-01 17:34:29,570 INFO L226 Difference]: Without dead ends: 3075 [2021-06-01 17:34:29,570 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 80.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:29,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3075 states. [2021-06-01 17:34:29,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3075 to 1623. [2021-06-01 17:34:29,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1623 states, 1622 states have (on average 3.9882860665844637) internal successors, (6469), 1622 states have internal predecessors, (6469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:29,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1623 states to 1623 states and 6469 transitions. [2021-06-01 17:34:29,608 INFO L78 Accepts]: Start accepts. Automaton has 1623 states and 6469 transitions. Word has length 25 [2021-06-01 17:34:29,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:29,608 INFO L482 AbstractCegarLoop]: Abstraction has 1623 states and 6469 transitions. [2021-06-01 17:34:29,608 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:29,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1623 states and 6469 transitions. [2021-06-01 17:34:29,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:29,610 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:29,610 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:29,610 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable534 [2021-06-01 17:34:29,610 INFO L430 AbstractCegarLoop]: === Iteration 536 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:29,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:29,610 INFO L82 PathProgramCache]: Analyzing trace with hash -390013413, now seen corresponding path program 532 times [2021-06-01 17:34:29,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:29,611 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744650450] [2021-06-01 17:34:29,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:29,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:29,697 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:29,697 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744650450] [2021-06-01 17:34:29,697 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744650450] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:29,697 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:29,698 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:29,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452672435] [2021-06-01 17:34:29,698 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:29,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:29,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:29,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:29,698 INFO L87 Difference]: Start difference. First operand 1623 states and 6469 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:29,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:29,764 INFO L93 Difference]: Finished difference Result 3322 states and 12415 transitions. [2021-06-01 17:34:29,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:29,765 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:29,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:29,770 INFO L225 Difference]: With dead ends: 3322 [2021-06-01 17:34:29,771 INFO L226 Difference]: Without dead ends: 3059 [2021-06-01 17:34:29,771 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:29,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3059 states. [2021-06-01 17:34:29,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3059 to 1607. [2021-06-01 17:34:29,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1607 states, 1606 states have (on average 3.993150684931507) internal successors, (6413), 1606 states have internal predecessors, (6413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:29,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 6413 transitions. [2021-06-01 17:34:29,808 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 6413 transitions. Word has length 25 [2021-06-01 17:34:29,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:29,808 INFO L482 AbstractCegarLoop]: Abstraction has 1607 states and 6413 transitions. [2021-06-01 17:34:29,808 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:29,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 6413 transitions. [2021-06-01 17:34:29,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:29,810 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:29,810 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:29,810 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable535 [2021-06-01 17:34:29,810 INFO L430 AbstractCegarLoop]: === Iteration 537 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:29,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:29,810 INFO L82 PathProgramCache]: Analyzing trace with hash -653348099, now seen corresponding path program 533 times [2021-06-01 17:34:29,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:29,810 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176779866] [2021-06-01 17:34:29,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:29,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:29,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:29,884 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:29,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176779866] [2021-06-01 17:34:29,884 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176779866] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:29,884 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:29,884 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:29,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779435284] [2021-06-01 17:34:29,884 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:29,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:29,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:29,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:29,885 INFO L87 Difference]: Start difference. First operand 1607 states and 6413 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:29,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:29,948 INFO L93 Difference]: Finished difference Result 3410 states and 12781 transitions. [2021-06-01 17:34:29,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:29,948 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:29,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:29,954 INFO L225 Difference]: With dead ends: 3410 [2021-06-01 17:34:29,954 INFO L226 Difference]: Without dead ends: 3125 [2021-06-01 17:34:29,954 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:29,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2021-06-01 17:34:29,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 1635. [2021-06-01 17:34:29,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1635 states, 1634 states have (on average 3.978580171358629) internal successors, (6501), 1634 states have internal predecessors, (6501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:29,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 6501 transitions. [2021-06-01 17:34:29,992 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 6501 transitions. Word has length 25 [2021-06-01 17:34:29,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:29,992 INFO L482 AbstractCegarLoop]: Abstraction has 1635 states and 6501 transitions. [2021-06-01 17:34:29,992 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:29,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 6501 transitions. [2021-06-01 17:34:29,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:29,994 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:29,995 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:29,995 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable536 [2021-06-01 17:34:29,995 INFO L430 AbstractCegarLoop]: === Iteration 538 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:29,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:29,995 INFO L82 PathProgramCache]: Analyzing trace with hash -2045492645, now seen corresponding path program 534 times [2021-06-01 17:34:29,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:29,995 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071832813] [2021-06-01 17:34:29,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:29,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:30,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:30,081 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:30,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071832813] [2021-06-01 17:34:30,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071832813] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:30,081 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:30,081 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:30,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062054417] [2021-06-01 17:34:30,081 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:30,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:30,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:30,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:30,081 INFO L87 Difference]: Start difference. First operand 1635 states and 6501 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:30,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:30,145 INFO L93 Difference]: Finished difference Result 3372 states and 12600 transitions. [2021-06-01 17:34:30,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:30,146 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:30,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:30,152 INFO L225 Difference]: With dead ends: 3372 [2021-06-01 17:34:30,152 INFO L226 Difference]: Without dead ends: 3089 [2021-06-01 17:34:30,152 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:30,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3089 states. [2021-06-01 17:34:30,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3089 to 1599. [2021-06-01 17:34:30,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 1598 states have (on average 3.9981226533166456) internal successors, (6389), 1598 states have internal predecessors, (6389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:30,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 6389 transitions. [2021-06-01 17:34:30,189 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 6389 transitions. Word has length 25 [2021-06-01 17:34:30,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:30,189 INFO L482 AbstractCegarLoop]: Abstraction has 1599 states and 6389 transitions. [2021-06-01 17:34:30,189 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:30,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 6389 transitions. [2021-06-01 17:34:30,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:30,191 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:30,191 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:30,192 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable537 [2021-06-01 17:34:30,192 INFO L430 AbstractCegarLoop]: === Iteration 539 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:30,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:30,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1889641977, now seen corresponding path program 535 times [2021-06-01 17:34:30,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:30,192 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935986535] [2021-06-01 17:34:30,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:30,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:30,283 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:30,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935986535] [2021-06-01 17:34:30,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935986535] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:30,283 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:30,283 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:30,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611666038] [2021-06-01 17:34:30,283 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:30,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:30,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:30,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:30,283 INFO L87 Difference]: Start difference. First operand 1599 states and 6389 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:30,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:30,335 INFO L93 Difference]: Finished difference Result 3368 states and 12636 transitions. [2021-06-01 17:34:30,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:30,335 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:30,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:30,341 INFO L225 Difference]: With dead ends: 3368 [2021-06-01 17:34:30,341 INFO L226 Difference]: Without dead ends: 3121 [2021-06-01 17:34:30,342 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:30,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3121 states. [2021-06-01 17:34:30,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3121 to 1599. [2021-06-01 17:34:30,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 1598 states have (on average 3.9806007509386734) internal successors, (6361), 1598 states have internal predecessors, (6361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:30,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 6361 transitions. [2021-06-01 17:34:30,379 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 6361 transitions. Word has length 25 [2021-06-01 17:34:30,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:30,379 INFO L482 AbstractCegarLoop]: Abstraction has 1599 states and 6361 transitions. [2021-06-01 17:34:30,379 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:30,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 6361 transitions. [2021-06-01 17:34:30,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:30,381 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:30,381 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:30,381 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable538 [2021-06-01 17:34:30,381 INFO L430 AbstractCegarLoop]: === Iteration 540 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:30,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:30,381 INFO L82 PathProgramCache]: Analyzing trace with hash 299707227, now seen corresponding path program 536 times [2021-06-01 17:34:30,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:30,381 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679022368] [2021-06-01 17:34:30,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:30,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:30,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:30,472 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:30,472 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679022368] [2021-06-01 17:34:30,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679022368] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:30,472 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:30,472 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:30,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383921897] [2021-06-01 17:34:30,472 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:30,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:30,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:30,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:30,472 INFO L87 Difference]: Start difference. First operand 1599 states and 6361 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:30,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:30,537 INFO L93 Difference]: Finished difference Result 3406 states and 12761 transitions. [2021-06-01 17:34:30,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:30,537 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:30,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:30,543 INFO L225 Difference]: With dead ends: 3406 [2021-06-01 17:34:30,543 INFO L226 Difference]: Without dead ends: 3093 [2021-06-01 17:34:30,544 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:30,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3093 states. [2021-06-01 17:34:30,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3093 to 1571. [2021-06-01 17:34:30,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1570 states have (on average 3.9878980891719746) internal successors, (6261), 1570 states have internal predecessors, (6261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:30,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 6261 transitions. [2021-06-01 17:34:30,580 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 6261 transitions. Word has length 25 [2021-06-01 17:34:30,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:30,580 INFO L482 AbstractCegarLoop]: Abstraction has 1571 states and 6261 transitions. [2021-06-01 17:34:30,580 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:30,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 6261 transitions. [2021-06-01 17:34:30,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:30,582 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:30,582 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:30,582 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable539 [2021-06-01 17:34:30,582 INFO L430 AbstractCegarLoop]: === Iteration 541 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:30,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:30,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1035704805, now seen corresponding path program 537 times [2021-06-01 17:34:30,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:30,583 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134772509] [2021-06-01 17:34:30,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:30,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:30,666 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:30,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134772509] [2021-06-01 17:34:30,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134772509] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:30,666 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:30,666 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:30,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367179081] [2021-06-01 17:34:30,667 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:30,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:30,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:30,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:30,667 INFO L87 Difference]: Start difference. First operand 1571 states and 6261 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:30,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:30,716 INFO L93 Difference]: Finished difference Result 3286 states and 12323 transitions. [2021-06-01 17:34:30,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:30,716 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:30,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:30,722 INFO L225 Difference]: With dead ends: 3286 [2021-06-01 17:34:30,722 INFO L226 Difference]: Without dead ends: 3039 [2021-06-01 17:34:30,722 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 90.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:30,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3039 states. [2021-06-01 17:34:30,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3039 to 1595. [2021-06-01 17:34:30,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1594 states have (on average 3.9755332496863236) internal successors, (6337), 1594 states have internal predecessors, (6337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:30,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 6337 transitions. [2021-06-01 17:34:30,759 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 6337 transitions. Word has length 25 [2021-06-01 17:34:30,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:30,759 INFO L482 AbstractCegarLoop]: Abstraction has 1595 states and 6337 transitions. [2021-06-01 17:34:30,759 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:30,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 6337 transitions. [2021-06-01 17:34:30,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:30,761 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:30,762 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:30,762 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable540 [2021-06-01 17:34:30,762 INFO L430 AbstractCegarLoop]: === Iteration 542 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:30,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:30,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1316990491, now seen corresponding path program 538 times [2021-06-01 17:34:30,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:30,762 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667875353] [2021-06-01 17:34:30,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:30,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:30,845 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:30,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667875353] [2021-06-01 17:34:30,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667875353] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:30,845 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:30,845 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:30,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934327549] [2021-06-01 17:34:30,845 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:30,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:30,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:30,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:30,845 INFO L87 Difference]: Start difference. First operand 1595 states and 6337 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:30,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:30,912 INFO L93 Difference]: Finished difference Result 3110 states and 11746 transitions. [2021-06-01 17:34:30,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:30,913 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:30,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:30,918 INFO L225 Difference]: With dead ends: 3110 [2021-06-01 17:34:30,918 INFO L226 Difference]: Without dead ends: 2823 [2021-06-01 17:34:30,918 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:30,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2021-06-01 17:34:30,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 1571. [2021-06-01 17:34:30,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1570 states have (on average 3.980254777070064) internal successors, (6249), 1570 states have internal predecessors, (6249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:30,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 6249 transitions. [2021-06-01 17:34:30,953 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 6249 transitions. Word has length 25 [2021-06-01 17:34:30,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:30,953 INFO L482 AbstractCegarLoop]: Abstraction has 1571 states and 6249 transitions. [2021-06-01 17:34:30,953 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:30,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 6249 transitions. [2021-06-01 17:34:30,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:30,955 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:30,955 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:30,955 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable541 [2021-06-01 17:34:30,955 INFO L430 AbstractCegarLoop]: === Iteration 543 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:30,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:30,956 INFO L82 PathProgramCache]: Analyzing trace with hash 381457149, now seen corresponding path program 539 times [2021-06-01 17:34:30,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:30,956 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257114202] [2021-06-01 17:34:30,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:30,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:31,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:31,050 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:31,050 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257114202] [2021-06-01 17:34:31,050 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257114202] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:31,050 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:31,050 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:31,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955889515] [2021-06-01 17:34:31,050 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:31,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:31,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:31,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:31,050 INFO L87 Difference]: Start difference. First operand 1571 states and 6249 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:31,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:31,115 INFO L93 Difference]: Finished difference Result 3336 states and 12520 transitions. [2021-06-01 17:34:31,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:31,116 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:31,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:31,121 INFO L225 Difference]: With dead ends: 3336 [2021-06-01 17:34:31,121 INFO L226 Difference]: Without dead ends: 3051 [2021-06-01 17:34:31,122 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:31,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3051 states. [2021-06-01 17:34:31,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3051 to 1607. [2021-06-01 17:34:31,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1607 states, 1606 states have (on average 3.9657534246575343) internal successors, (6369), 1606 states have internal predecessors, (6369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:31,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 6369 transitions. [2021-06-01 17:34:31,158 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 6369 transitions. Word has length 25 [2021-06-01 17:34:31,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:31,158 INFO L482 AbstractCegarLoop]: Abstraction has 1607 states and 6369 transitions. [2021-06-01 17:34:31,158 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:31,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 6369 transitions. [2021-06-01 17:34:31,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:31,160 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:31,160 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:31,160 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable542 [2021-06-01 17:34:31,160 INFO L430 AbstractCegarLoop]: === Iteration 544 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:31,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:31,160 INFO L82 PathProgramCache]: Analyzing trace with hash -359494949, now seen corresponding path program 540 times [2021-06-01 17:34:31,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:31,160 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647402175] [2021-06-01 17:34:31,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:31,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:31,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:31,278 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:31,278 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647402175] [2021-06-01 17:34:31,278 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647402175] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:31,279 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:31,279 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:31,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251173708] [2021-06-01 17:34:31,279 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:31,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:31,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:31,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:31,279 INFO L87 Difference]: Start difference. First operand 1607 states and 6369 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:31,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:31,343 INFO L93 Difference]: Finished difference Result 3122 states and 11778 transitions. [2021-06-01 17:34:31,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:31,344 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:31,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:31,349 INFO L225 Difference]: With dead ends: 3122 [2021-06-01 17:34:31,349 INFO L226 Difference]: Without dead ends: 2811 [2021-06-01 17:34:31,349 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 137.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:31,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2811 states. [2021-06-01 17:34:31,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2811 to 1559. [2021-06-01 17:34:31,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1559 states, 1558 states have (on average 3.9878048780487805) internal successors, (6213), 1558 states have internal predecessors, (6213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:31,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 6213 transitions. [2021-06-01 17:34:31,384 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 6213 transitions. Word has length 25 [2021-06-01 17:34:31,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:31,384 INFO L482 AbstractCegarLoop]: Abstraction has 1559 states and 6213 transitions. [2021-06-01 17:34:31,384 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:31,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 6213 transitions. [2021-06-01 17:34:31,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:31,386 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:31,386 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:31,386 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable543 [2021-06-01 17:34:31,386 INFO L430 AbstractCegarLoop]: === Iteration 545 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:31,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:31,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1680548325, now seen corresponding path program 541 times [2021-06-01 17:34:31,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:31,386 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284962131] [2021-06-01 17:34:31,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:31,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:31,463 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:31,463 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284962131] [2021-06-01 17:34:31,463 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284962131] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:31,463 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:31,463 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:31,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689750467] [2021-06-01 17:34:31,463 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:31,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:31,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:31,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:31,463 INFO L87 Difference]: Start difference. First operand 1559 states and 6213 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:31,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:31,517 INFO L93 Difference]: Finished difference Result 3208 states and 11994 transitions. [2021-06-01 17:34:31,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:31,517 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:31,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:31,522 INFO L225 Difference]: With dead ends: 3208 [2021-06-01 17:34:31,523 INFO L226 Difference]: Without dead ends: 2961 [2021-06-01 17:34:31,523 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:31,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2021-06-01 17:34:31,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1583. [2021-06-01 17:34:31,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1582 states have (on average 3.9804045512010116) internal successors, (6297), 1582 states have internal predecessors, (6297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:31,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 6297 transitions. [2021-06-01 17:34:31,558 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 6297 transitions. Word has length 25 [2021-06-01 17:34:31,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:31,558 INFO L482 AbstractCegarLoop]: Abstraction has 1583 states and 6297 transitions. [2021-06-01 17:34:31,558 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:31,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 6297 transitions. [2021-06-01 17:34:31,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:31,560 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:31,560 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:31,561 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable544 [2021-06-01 17:34:31,561 INFO L430 AbstractCegarLoop]: === Iteration 546 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:31,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:31,561 INFO L82 PathProgramCache]: Analyzing trace with hash -51685, now seen corresponding path program 542 times [2021-06-01 17:34:31,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:31,561 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873315073] [2021-06-01 17:34:31,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:31,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:31,637 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:31,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873315073] [2021-06-01 17:34:31,637 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873315073] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:31,637 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:31,637 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:31,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782224223] [2021-06-01 17:34:31,637 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:31,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:31,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:31,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:31,637 INFO L87 Difference]: Start difference. First operand 1583 states and 6297 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:31,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:31,704 INFO L93 Difference]: Finished difference Result 3208 states and 11978 transitions. [2021-06-01 17:34:31,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:31,704 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:31,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:31,710 INFO L225 Difference]: With dead ends: 3208 [2021-06-01 17:34:31,710 INFO L226 Difference]: Without dead ends: 2945 [2021-06-01 17:34:31,710 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:31,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2021-06-01 17:34:31,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 1567. [2021-06-01 17:34:31,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1567 states, 1566 states have (on average 3.9853128991060025) internal successors, (6241), 1566 states have internal predecessors, (6241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:31,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 6241 transitions. [2021-06-01 17:34:31,745 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 6241 transitions. Word has length 25 [2021-06-01 17:34:31,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:31,746 INFO L482 AbstractCegarLoop]: Abstraction has 1567 states and 6241 transitions. [2021-06-01 17:34:31,746 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:31,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 6241 transitions. [2021-06-01 17:34:31,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:31,748 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:31,748 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:31,748 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable545 [2021-06-01 17:34:31,748 INFO L430 AbstractCegarLoop]: === Iteration 547 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:31,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:31,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1767622009, now seen corresponding path program 543 times [2021-06-01 17:34:31,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:31,748 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900023810] [2021-06-01 17:34:31,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:31,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:31,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:31,826 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:31,826 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900023810] [2021-06-01 17:34:31,826 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900023810] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:31,826 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:31,826 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:31,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357668731] [2021-06-01 17:34:31,826 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:31,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:31,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:31,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:31,827 INFO L87 Difference]: Start difference. First operand 1567 states and 6241 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:31,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:31,886 INFO L93 Difference]: Finished difference Result 3152 states and 11790 transitions. [2021-06-01 17:34:31,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:31,886 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:31,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:31,892 INFO L225 Difference]: With dead ends: 3152 [2021-06-01 17:34:31,892 INFO L226 Difference]: Without dead ends: 2905 [2021-06-01 17:34:31,892 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:31,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2905 states. [2021-06-01 17:34:31,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2905 to 1591. [2021-06-01 17:34:31,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1591 states, 1590 states have (on average 3.972955974842767) internal successors, (6317), 1590 states have internal predecessors, (6317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:31,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 6317 transitions. [2021-06-01 17:34:31,928 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 6317 transitions. Word has length 25 [2021-06-01 17:34:31,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:31,928 INFO L482 AbstractCegarLoop]: Abstraction has 1591 states and 6317 transitions. [2021-06-01 17:34:31,928 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:31,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 6317 transitions. [2021-06-01 17:34:31,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:31,930 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:31,930 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:31,930 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable546 [2021-06-01 17:34:31,930 INFO L430 AbstractCegarLoop]: === Iteration 548 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:31,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:31,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1885006309, now seen corresponding path program 544 times [2021-06-01 17:34:31,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:31,930 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464593496] [2021-06-01 17:34:31,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:32,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:32,005 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:32,005 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464593496] [2021-06-01 17:34:32,005 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464593496] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:32,005 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:32,005 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:32,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021084186] [2021-06-01 17:34:32,006 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:32,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:32,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:32,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:32,006 INFO L87 Difference]: Start difference. First operand 1591 states and 6317 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:32,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:32,078 INFO L93 Difference]: Finished difference Result 2976 states and 11213 transitions. [2021-06-01 17:34:32,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:32,078 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:32,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:32,083 INFO L225 Difference]: With dead ends: 2976 [2021-06-01 17:34:32,083 INFO L226 Difference]: Without dead ends: 2689 [2021-06-01 17:34:32,084 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:32,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2021-06-01 17:34:32,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 1567. [2021-06-01 17:34:32,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1567 states, 1566 states have (on average 3.980204342273308) internal successors, (6233), 1566 states have internal predecessors, (6233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:32,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 6233 transitions. [2021-06-01 17:34:32,117 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 6233 transitions. Word has length 25 [2021-06-01 17:34:32,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:32,117 INFO L482 AbstractCegarLoop]: Abstraction has 1567 states and 6233 transitions. [2021-06-01 17:34:32,117 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:32,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 6233 transitions. [2021-06-01 17:34:32,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:32,119 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:32,119 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:32,119 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable547 [2021-06-01 17:34:32,119 INFO L430 AbstractCegarLoop]: === Iteration 549 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:32,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:32,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1787330075, now seen corresponding path program 545 times [2021-06-01 17:34:32,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:32,120 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829056783] [2021-06-01 17:34:32,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:32,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:32,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:32,195 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:32,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829056783] [2021-06-01 17:34:32,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829056783] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:32,195 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:32,195 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:32,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917056795] [2021-06-01 17:34:32,196 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:32,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:32,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:32,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:32,196 INFO L87 Difference]: Start difference. First operand 1567 states and 6233 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:32,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:32,269 INFO L93 Difference]: Finished difference Result 2960 states and 11157 transitions. [2021-06-01 17:34:32,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:32,269 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:32,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:32,274 INFO L225 Difference]: With dead ends: 2960 [2021-06-01 17:34:32,274 INFO L226 Difference]: Without dead ends: 2713 [2021-06-01 17:34:32,275 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:32,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2021-06-01 17:34:32,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 1591. [2021-06-01 17:34:32,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1591 states, 1590 states have (on average 3.9679245283018867) internal successors, (6309), 1590 states have internal predecessors, (6309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:32,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 6309 transitions. [2021-06-01 17:34:32,309 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 6309 transitions. Word has length 25 [2021-06-01 17:34:32,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:32,309 INFO L482 AbstractCegarLoop]: Abstraction has 1591 states and 6309 transitions. [2021-06-01 17:34:32,309 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:32,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 6309 transitions. [2021-06-01 17:34:32,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:32,311 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:32,311 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:32,311 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable548 [2021-06-01 17:34:32,311 INFO L430 AbstractCegarLoop]: === Iteration 550 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:32,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:32,312 INFO L82 PathProgramCache]: Analyzing trace with hash -256006919, now seen corresponding path program 546 times [2021-06-01 17:34:32,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:32,312 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996713632] [2021-06-01 17:34:32,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:32,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:32,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:32,387 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:32,387 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996713632] [2021-06-01 17:34:32,387 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996713632] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:32,387 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:32,388 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:32,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446222989] [2021-06-01 17:34:32,388 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:32,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:32,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:32,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:32,388 INFO L87 Difference]: Start difference. First operand 1591 states and 6309 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:32,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:32,459 INFO L93 Difference]: Finished difference Result 2712 states and 10304 transitions. [2021-06-01 17:34:32,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:32,459 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:32,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:32,464 INFO L225 Difference]: With dead ends: 2712 [2021-06-01 17:34:32,464 INFO L226 Difference]: Without dead ends: 2417 [2021-06-01 17:34:32,464 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:32,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2417 states. [2021-06-01 17:34:32,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2417 to 1559. [2021-06-01 17:34:32,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1559 states, 1558 states have (on average 3.985237483953787) internal successors, (6209), 1558 states have internal predecessors, (6209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:32,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 6209 transitions. [2021-06-01 17:34:32,496 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 6209 transitions. Word has length 25 [2021-06-01 17:34:32,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:32,497 INFO L482 AbstractCegarLoop]: Abstraction has 1559 states and 6209 transitions. [2021-06-01 17:34:32,497 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:32,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 6209 transitions. [2021-06-01 17:34:32,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:32,499 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:32,499 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:32,499 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable549 [2021-06-01 17:34:32,499 INFO L430 AbstractCegarLoop]: === Iteration 551 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:32,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:32,499 INFO L82 PathProgramCache]: Analyzing trace with hash -956444035, now seen corresponding path program 547 times [2021-06-01 17:34:32,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:32,499 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921571682] [2021-06-01 17:34:32,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:32,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:32,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:32,572 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:32,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921571682] [2021-06-01 17:34:32,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921571682] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:32,572 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:32,572 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:32,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842077259] [2021-06-01 17:34:32,572 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:32,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:32,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:32,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:32,572 INFO L87 Difference]: Start difference. First operand 1559 states and 6209 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:32,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:32,643 INFO L93 Difference]: Finished difference Result 3312 states and 12424 transitions. [2021-06-01 17:34:32,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:32,643 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:32,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:32,649 INFO L225 Difference]: With dead ends: 3312 [2021-06-01 17:34:32,649 INFO L226 Difference]: Without dead ends: 3027 [2021-06-01 17:34:32,649 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:32,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3027 states. [2021-06-01 17:34:32,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3027 to 1599. [2021-06-01 17:34:32,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 1598 states have (on average 3.9755944931163953) internal successors, (6353), 1598 states have internal predecessors, (6353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:32,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 6353 transitions. [2021-06-01 17:34:32,685 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 6353 transitions. Word has length 25 [2021-06-01 17:34:32,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:32,685 INFO L482 AbstractCegarLoop]: Abstraction has 1599 states and 6353 transitions. [2021-06-01 17:34:32,685 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:32,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 6353 transitions. [2021-06-01 17:34:32,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:32,687 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:32,687 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:32,688 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable550 [2021-06-01 17:34:32,688 INFO L430 AbstractCegarLoop]: === Iteration 552 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:32,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:32,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1946378715, now seen corresponding path program 548 times [2021-06-01 17:34:32,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:32,688 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674627794] [2021-06-01 17:34:32,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:32,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:32,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:32,761 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:32,761 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674627794] [2021-06-01 17:34:32,761 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674627794] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:32,761 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:32,761 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:32,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678457818] [2021-06-01 17:34:32,761 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:32,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:32,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:32,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:32,762 INFO L87 Difference]: Start difference. First operand 1599 states and 6353 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:32,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:32,834 INFO L93 Difference]: Finished difference Result 3274 states and 12243 transitions. [2021-06-01 17:34:32,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:32,834 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:32,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:32,840 INFO L225 Difference]: With dead ends: 3274 [2021-06-01 17:34:32,840 INFO L226 Difference]: Without dead ends: 2999 [2021-06-01 17:34:32,840 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:32,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2999 states. [2021-06-01 17:34:32,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2999 to 1571. [2021-06-01 17:34:32,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1570 states have (on average 3.9828025477707008) internal successors, (6253), 1570 states have internal predecessors, (6253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:32,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 6253 transitions. [2021-06-01 17:34:32,875 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 6253 transitions. Word has length 25 [2021-06-01 17:34:32,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:32,875 INFO L482 AbstractCegarLoop]: Abstraction has 1571 states and 6253 transitions. [2021-06-01 17:34:32,875 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:32,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 6253 transitions. [2021-06-01 17:34:32,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:32,877 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:32,877 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:32,877 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable551 [2021-06-01 17:34:32,877 INFO L430 AbstractCegarLoop]: === Iteration 553 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:32,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:32,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1803240997, now seen corresponding path program 549 times [2021-06-01 17:34:32,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:32,878 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263574494] [2021-06-01 17:34:32,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:32,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:32,963 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:32,963 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263574494] [2021-06-01 17:34:32,963 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263574494] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:32,963 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:32,963 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:32,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47296052] [2021-06-01 17:34:32,963 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:32,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:32,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:32,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:32,963 INFO L87 Difference]: Start difference. First operand 1571 states and 6253 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:33,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:33,028 INFO L93 Difference]: Finished difference Result 3206 states and 12011 transitions. [2021-06-01 17:34:33,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:33,028 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:33,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:33,034 INFO L225 Difference]: With dead ends: 3206 [2021-06-01 17:34:33,034 INFO L226 Difference]: Without dead ends: 2921 [2021-06-01 17:34:33,034 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:33,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2021-06-01 17:34:33,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1607. [2021-06-01 17:34:33,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1607 states, 1606 states have (on average 3.968244084682441) internal successors, (6373), 1606 states have internal predecessors, (6373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:33,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 6373 transitions. [2021-06-01 17:34:33,070 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 6373 transitions. Word has length 25 [2021-06-01 17:34:33,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:33,070 INFO L482 AbstractCegarLoop]: Abstraction has 1607 states and 6373 transitions. [2021-06-01 17:34:33,070 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:33,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 6373 transitions. [2021-06-01 17:34:33,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:33,072 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:33,072 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:33,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable552 [2021-06-01 17:34:33,072 INFO L430 AbstractCegarLoop]: === Iteration 554 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:33,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:33,072 INFO L82 PathProgramCache]: Analyzing trace with hash 40417883, now seen corresponding path program 550 times [2021-06-01 17:34:33,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:33,072 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535911749] [2021-06-01 17:34:33,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:33,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:33,156 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:33,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535911749] [2021-06-01 17:34:33,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535911749] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:33,156 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:33,156 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:33,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823718818] [2021-06-01 17:34:33,156 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:33,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:33,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:33,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:33,157 INFO L87 Difference]: Start difference. First operand 1607 states and 6373 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:33,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:33,227 INFO L93 Difference]: Finished difference Result 2992 states and 11269 transitions. [2021-06-01 17:34:33,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:33,228 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:33,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:33,233 INFO L225 Difference]: With dead ends: 2992 [2021-06-01 17:34:33,233 INFO L226 Difference]: Without dead ends: 2693 [2021-06-01 17:34:33,233 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:33,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2693 states. [2021-06-01 17:34:33,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2693 to 1571. [2021-06-01 17:34:33,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1570 states have (on average 3.97515923566879) internal successors, (6241), 1570 states have internal predecessors, (6241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:33,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 6241 transitions. [2021-06-01 17:34:33,269 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 6241 transitions. Word has length 25 [2021-06-01 17:34:33,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:33,269 INFO L482 AbstractCegarLoop]: Abstraction has 1571 states and 6241 transitions. [2021-06-01 17:34:33,269 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:33,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 6241 transitions. [2021-06-01 17:34:33,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:33,271 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:33,271 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:33,271 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable553 [2021-06-01 17:34:33,271 INFO L430 AbstractCegarLoop]: === Iteration 555 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:33,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:33,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1438983623, now seen corresponding path program 551 times [2021-06-01 17:34:33,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:33,272 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465628590] [2021-06-01 17:34:33,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:33,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:33,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:33,346 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:33,346 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465628590] [2021-06-01 17:34:33,346 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465628590] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:33,346 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:33,346 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:33,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179529589] [2021-06-01 17:34:33,346 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:33,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:33,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:33,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:33,347 INFO L87 Difference]: Start difference. First operand 1571 states and 6241 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:33,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:33,422 INFO L93 Difference]: Finished difference Result 2964 states and 11165 transitions. [2021-06-01 17:34:33,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:33,422 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:33,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:33,427 INFO L225 Difference]: With dead ends: 2964 [2021-06-01 17:34:33,427 INFO L226 Difference]: Without dead ends: 2717 [2021-06-01 17:34:33,428 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:33,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2717 states. [2021-06-01 17:34:33,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2717 to 1595. [2021-06-01 17:34:33,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1594 states have (on average 3.9629861982434127) internal successors, (6317), 1594 states have internal predecessors, (6317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:33,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 6317 transitions. [2021-06-01 17:34:33,462 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 6317 transitions. Word has length 25 [2021-06-01 17:34:33,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:33,462 INFO L482 AbstractCegarLoop]: Abstraction has 1595 states and 6317 transitions. [2021-06-01 17:34:33,462 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:33,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 6317 transitions. [2021-06-01 17:34:33,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:33,464 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:33,464 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:33,464 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable554 [2021-06-01 17:34:33,464 INFO L430 AbstractCegarLoop]: === Iteration 556 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:33,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:33,465 INFO L82 PathProgramCache]: Analyzing trace with hash -357920997, now seen corresponding path program 552 times [2021-06-01 17:34:33,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:33,465 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250841903] [2021-06-01 17:34:33,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:33,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:33,545 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:33,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250841903] [2021-06-01 17:34:33,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250841903] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:33,545 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:33,545 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:33,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682442728] [2021-06-01 17:34:33,545 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:33,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:33,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:33,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:33,546 INFO L87 Difference]: Start difference. First operand 1595 states and 6317 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:33,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:33,613 INFO L93 Difference]: Finished difference Result 2716 states and 10312 transitions. [2021-06-01 17:34:33,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:33,613 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:33,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:33,617 INFO L225 Difference]: With dead ends: 2716 [2021-06-01 17:34:33,618 INFO L226 Difference]: Without dead ends: 2413 [2021-06-01 17:34:33,618 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:33,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2021-06-01 17:34:33,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 1555. [2021-06-01 17:34:33,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1555 states, 1554 states have (on average 3.9890604890604893) internal successors, (6199), 1554 states have internal predecessors, (6199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:33,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 6199 transitions. [2021-06-01 17:34:33,664 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 6199 transitions. Word has length 25 [2021-06-01 17:34:33,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:33,664 INFO L482 AbstractCegarLoop]: Abstraction has 1555 states and 6199 transitions. [2021-06-01 17:34:33,664 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:33,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 6199 transitions. [2021-06-01 17:34:33,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:33,666 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:33,666 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:33,666 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable555 [2021-06-01 17:34:33,666 INFO L430 AbstractCegarLoop]: === Iteration 557 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:33,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:33,666 INFO L82 PathProgramCache]: Analyzing trace with hash -302743043, now seen corresponding path program 553 times [2021-06-01 17:34:33,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:33,666 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025015204] [2021-06-01 17:34:33,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:33,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:33,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:33,752 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:33,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025015204] [2021-06-01 17:34:33,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025015204] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:33,752 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:33,752 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:33,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159913059] [2021-06-01 17:34:33,752 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:33,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:33,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:33,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:33,752 INFO L87 Difference]: Start difference. First operand 1555 states and 6199 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:33,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:33,809 INFO L93 Difference]: Finished difference Result 3242 states and 12131 transitions. [2021-06-01 17:34:33,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:33,809 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:33,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:33,815 INFO L225 Difference]: With dead ends: 3242 [2021-06-01 17:34:33,815 INFO L226 Difference]: Without dead ends: 2995 [2021-06-01 17:34:33,815 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 90.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:33,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2995 states. [2021-06-01 17:34:33,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2995 to 1583. [2021-06-01 17:34:33,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1582 states have (on average 3.9740834386852084) internal successors, (6287), 1582 states have internal predecessors, (6287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:33,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 6287 transitions. [2021-06-01 17:34:33,851 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 6287 transitions. Word has length 25 [2021-06-01 17:34:33,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:33,851 INFO L482 AbstractCegarLoop]: Abstraction has 1583 states and 6287 transitions. [2021-06-01 17:34:33,851 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:33,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 6287 transitions. [2021-06-01 17:34:33,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:33,853 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:33,853 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:33,853 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable556 [2021-06-01 17:34:33,853 INFO L430 AbstractCegarLoop]: === Iteration 558 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:33,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:33,854 INFO L82 PathProgramCache]: Analyzing trace with hash 705554941, now seen corresponding path program 554 times [2021-06-01 17:34:33,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:33,854 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109031283] [2021-06-01 17:34:33,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:33,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:33,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:33,939 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:33,939 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109031283] [2021-06-01 17:34:33,939 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109031283] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:33,939 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:33,939 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:33,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815112534] [2021-06-01 17:34:33,940 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:33,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:33,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:33,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:33,940 INFO L87 Difference]: Start difference. First operand 1583 states and 6287 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:34,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:34,004 INFO L93 Difference]: Finished difference Result 3278 states and 12251 transitions. [2021-06-01 17:34:34,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:34,004 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:34,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:34,010 INFO L225 Difference]: With dead ends: 3278 [2021-06-01 17:34:34,010 INFO L226 Difference]: Without dead ends: 2967 [2021-06-01 17:34:34,010 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:34,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2021-06-01 17:34:34,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 1555. [2021-06-01 17:34:34,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1555 states, 1554 states have (on average 3.983912483912484) internal successors, (6191), 1554 states have internal predecessors, (6191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:34,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 6191 transitions. [2021-06-01 17:34:34,046 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 6191 transitions. Word has length 25 [2021-06-01 17:34:34,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:34,046 INFO L482 AbstractCegarLoop]: Abstraction has 1555 states and 6191 transitions. [2021-06-01 17:34:34,046 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:34,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 6191 transitions. [2021-06-01 17:34:34,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:34,048 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:34,048 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:34,048 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable557 [2021-06-01 17:34:34,048 INFO L430 AbstractCegarLoop]: === Iteration 559 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:34,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:34,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1149540005, now seen corresponding path program 555 times [2021-06-01 17:34:34,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:34,048 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353472200] [2021-06-01 17:34:34,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:34,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:34,124 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:34,125 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353472200] [2021-06-01 17:34:34,125 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353472200] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:34,125 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:34,125 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:34,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863500753] [2021-06-01 17:34:34,125 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:34,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:34,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:34,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:34,125 INFO L87 Difference]: Start difference. First operand 1555 states and 6191 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:34,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:34,172 INFO L93 Difference]: Finished difference Result 3194 states and 11923 transitions. [2021-06-01 17:34:34,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:34,172 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:34,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:34,177 INFO L225 Difference]: With dead ends: 3194 [2021-06-01 17:34:34,178 INFO L226 Difference]: Without dead ends: 2947 [2021-06-01 17:34:34,178 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:34,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2021-06-01 17:34:34,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 1571. [2021-06-01 17:34:34,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1570 states have (on average 3.9738853503184712) internal successors, (6239), 1570 states have internal predecessors, (6239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:34,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 6239 transitions. [2021-06-01 17:34:34,213 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 6239 transitions. Word has length 25 [2021-06-01 17:34:34,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:34,213 INFO L482 AbstractCegarLoop]: Abstraction has 1571 states and 6239 transitions. [2021-06-01 17:34:34,213 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:34,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 6239 transitions. [2021-06-01 17:34:34,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:34,215 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:34,215 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:34,215 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable558 [2021-06-01 17:34:34,215 INFO L430 AbstractCegarLoop]: === Iteration 560 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:34,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:34,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1179399683, now seen corresponding path program 556 times [2021-06-01 17:34:34,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:34,215 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326591878] [2021-06-01 17:34:34,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:34,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:34,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:34,289 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:34,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326591878] [2021-06-01 17:34:34,289 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326591878] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:34,289 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:34,289 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:34,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781187899] [2021-06-01 17:34:34,289 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:34,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:34,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:34,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:34,290 INFO L87 Difference]: Start difference. First operand 1571 states and 6239 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:34,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:34,351 INFO L93 Difference]: Finished difference Result 3194 states and 11907 transitions. [2021-06-01 17:34:34,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:34,351 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:34,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:34,357 INFO L225 Difference]: With dead ends: 3194 [2021-06-01 17:34:34,357 INFO L226 Difference]: Without dead ends: 2931 [2021-06-01 17:34:34,357 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:34,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2931 states. [2021-06-01 17:34:34,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2931 to 1555. [2021-06-01 17:34:34,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1555 states, 1554 states have (on average 3.9787644787644787) internal successors, (6183), 1554 states have internal predecessors, (6183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:34,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 6183 transitions. [2021-06-01 17:34:34,392 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 6183 transitions. Word has length 25 [2021-06-01 17:34:34,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:34,392 INFO L482 AbstractCegarLoop]: Abstraction has 1555 states and 6183 transitions. [2021-06-01 17:34:34,392 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:34,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 6183 transitions. [2021-06-01 17:34:34,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:34,394 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:34,394 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:34,394 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable559 [2021-06-01 17:34:34,394 INFO L430 AbstractCegarLoop]: === Iteration 561 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:34,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:34,394 INFO L82 PathProgramCache]: Analyzing trace with hash 755122685, now seen corresponding path program 557 times [2021-06-01 17:34:34,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:34,394 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439801372] [2021-06-01 17:34:34,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:34,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:34,468 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:34,468 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439801372] [2021-06-01 17:34:34,469 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439801372] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:34,469 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:34,469 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:34,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767115622] [2021-06-01 17:34:34,469 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:34,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:34,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:34,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:34,469 INFO L87 Difference]: Start difference. First operand 1555 states and 6183 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:34,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:34,530 INFO L93 Difference]: Finished difference Result 3278 states and 12263 transitions. [2021-06-01 17:34:34,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:34,530 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:34,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:34,536 INFO L225 Difference]: With dead ends: 3278 [2021-06-01 17:34:34,536 INFO L226 Difference]: Without dead ends: 2995 [2021-06-01 17:34:34,536 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:34,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2995 states. [2021-06-01 17:34:34,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2995 to 1583. [2021-06-01 17:34:34,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1582 states have (on average 3.963969658659924) internal successors, (6271), 1582 states have internal predecessors, (6271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:34,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 6271 transitions. [2021-06-01 17:34:34,572 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 6271 transitions. Word has length 25 [2021-06-01 17:34:34,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:34,572 INFO L482 AbstractCegarLoop]: Abstraction has 1583 states and 6271 transitions. [2021-06-01 17:34:34,572 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:34,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 6271 transitions. [2021-06-01 17:34:34,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:34,574 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:34,574 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:34,574 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable560 [2021-06-01 17:34:34,574 INFO L430 AbstractCegarLoop]: === Iteration 562 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:34,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:34,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1288214309, now seen corresponding path program 558 times [2021-06-01 17:34:34,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:34,575 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132446005] [2021-06-01 17:34:34,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:34,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:34,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:34,651 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:34,651 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132446005] [2021-06-01 17:34:34,651 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132446005] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:34,651 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:34,651 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:34,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407759607] [2021-06-01 17:34:34,651 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:34,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:34,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:34,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:34,651 INFO L87 Difference]: Start difference. First operand 1583 states and 6271 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:34,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:34,712 INFO L93 Difference]: Finished difference Result 3242 states and 12087 transitions. [2021-06-01 17:34:34,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:34,713 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:34,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:34,718 INFO L225 Difference]: With dead ends: 3242 [2021-06-01 17:34:34,718 INFO L226 Difference]: Without dead ends: 2959 [2021-06-01 17:34:34,718 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:34,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2021-06-01 17:34:34,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 1547. [2021-06-01 17:34:34,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1547 states, 1546 states have (on average 3.983829236739974) internal successors, (6159), 1546 states have internal predecessors, (6159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:34,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1547 states to 1547 states and 6159 transitions. [2021-06-01 17:34:34,754 INFO L78 Accepts]: Start accepts. Automaton has 1547 states and 6159 transitions. Word has length 25 [2021-06-01 17:34:34,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:34,754 INFO L482 AbstractCegarLoop]: Abstraction has 1547 states and 6159 transitions. [2021-06-01 17:34:34,754 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:34,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1547 states and 6159 transitions. [2021-06-01 17:34:34,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:34,756 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:34,756 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:34,756 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable561 [2021-06-01 17:34:34,756 INFO L430 AbstractCegarLoop]: === Iteration 563 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:34,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:34,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1969162715, now seen corresponding path program 559 times [2021-06-01 17:34:34,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:34,756 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58377069] [2021-06-01 17:34:34,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:34,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:34,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:34,840 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:34,840 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58377069] [2021-06-01 17:34:34,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58377069] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:34,840 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:34,840 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:34,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774032144] [2021-06-01 17:34:34,840 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:34,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:34,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:34,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:34,840 INFO L87 Difference]: Start difference. First operand 1547 states and 6159 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:34,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:34,888 INFO L93 Difference]: Finished difference Result 3230 states and 12087 transitions. [2021-06-01 17:34:34,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:34,888 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:34,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:34,894 INFO L225 Difference]: With dead ends: 3230 [2021-06-01 17:34:34,894 INFO L226 Difference]: Without dead ends: 2983 [2021-06-01 17:34:34,894 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:34,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2021-06-01 17:34:34,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1547. [2021-06-01 17:34:34,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1547 states, 1546 states have (on average 3.965717981888745) internal successors, (6131), 1546 states have internal predecessors, (6131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:34,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1547 states to 1547 states and 6131 transitions. [2021-06-01 17:34:34,929 INFO L78 Accepts]: Start accepts. Automaton has 1547 states and 6131 transitions. Word has length 25 [2021-06-01 17:34:34,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:34,929 INFO L482 AbstractCegarLoop]: Abstraction has 1547 states and 6131 transitions. [2021-06-01 17:34:34,929 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:34,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1547 states and 6131 transitions. [2021-06-01 17:34:34,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:34,931 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:34,931 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:34,931 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable562 [2021-06-01 17:34:34,931 INFO L430 AbstractCegarLoop]: === Iteration 564 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:34,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:34,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1317506597, now seen corresponding path program 560 times [2021-06-01 17:34:34,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:34,932 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760188701] [2021-06-01 17:34:34,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:35,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:35,014 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:35,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760188701] [2021-06-01 17:34:35,015 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760188701] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:35,015 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:35,015 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:35,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023446577] [2021-06-01 17:34:35,015 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:35,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:35,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:35,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:35,015 INFO L87 Difference]: Start difference. First operand 1547 states and 6131 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:35,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:35,079 INFO L93 Difference]: Finished difference Result 3266 states and 12207 transitions. [2021-06-01 17:34:35,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:35,080 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:35,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:35,085 INFO L225 Difference]: With dead ends: 3266 [2021-06-01 17:34:35,085 INFO L226 Difference]: Without dead ends: 2955 [2021-06-01 17:34:35,085 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:35,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2021-06-01 17:34:35,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 1519. [2021-06-01 17:34:35,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1519 states, 1518 states have (on average 3.9729907773386035) internal successors, (6031), 1518 states have internal predecessors, (6031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:35,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 6031 transitions. [2021-06-01 17:34:35,119 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 6031 transitions. Word has length 25 [2021-06-01 17:34:35,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:35,119 INFO L482 AbstractCegarLoop]: Abstraction has 1519 states and 6031 transitions. [2021-06-01 17:34:35,119 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:35,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 6031 transitions. [2021-06-01 17:34:35,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:35,121 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:35,121 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:35,121 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable563 [2021-06-01 17:34:35,121 INFO L430 AbstractCegarLoop]: === Iteration 565 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:35,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:35,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1173135835, now seen corresponding path program 561 times [2021-06-01 17:34:35,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:35,122 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600411954] [2021-06-01 17:34:35,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:35,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:35,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:35,200 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:35,200 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600411954] [2021-06-01 17:34:35,200 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600411954] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:35,200 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:35,200 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:35,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660371543] [2021-06-01 17:34:35,200 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:35,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:35,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:35,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:35,200 INFO L87 Difference]: Start difference. First operand 1519 states and 6031 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:35,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:35,248 INFO L93 Difference]: Finished difference Result 3150 states and 11779 transitions. [2021-06-01 17:34:35,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:35,248 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:35,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:35,254 INFO L225 Difference]: With dead ends: 3150 [2021-06-01 17:34:35,254 INFO L226 Difference]: Without dead ends: 2903 [2021-06-01 17:34:35,254 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:35,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2021-06-01 17:34:35,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 1543. [2021-06-01 17:34:35,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1542 states have (on average 3.9604409857328147) internal successors, (6107), 1542 states have internal predecessors, (6107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:35,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 6107 transitions. [2021-06-01 17:34:35,288 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 6107 transitions. Word has length 25 [2021-06-01 17:34:35,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:35,288 INFO L482 AbstractCegarLoop]: Abstraction has 1543 states and 6107 transitions. [2021-06-01 17:34:35,288 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:35,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 6107 transitions. [2021-06-01 17:34:35,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:35,290 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:35,290 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:35,290 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable564 [2021-06-01 17:34:35,290 INFO L430 AbstractCegarLoop]: === Iteration 566 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:35,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:35,291 INFO L82 PathProgramCache]: Analyzing trace with hash 527604221, now seen corresponding path program 562 times [2021-06-01 17:34:35,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:35,291 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976229275] [2021-06-01 17:34:35,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:35,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:35,366 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:35,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976229275] [2021-06-01 17:34:35,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976229275] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:35,366 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:35,366 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:35,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456672450] [2021-06-01 17:34:35,366 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:35,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:35,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:35,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:35,367 INFO L87 Difference]: Start difference. First operand 1543 states and 6107 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:35,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:35,430 INFO L93 Difference]: Finished difference Result 2974 states and 11202 transitions. [2021-06-01 17:34:35,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:35,430 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:35,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:35,435 INFO L225 Difference]: With dead ends: 2974 [2021-06-01 17:34:35,436 INFO L226 Difference]: Without dead ends: 2687 [2021-06-01 17:34:35,436 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:35,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2687 states. [2021-06-01 17:34:35,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2687 to 1519. [2021-06-01 17:34:35,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1519 states, 1518 states have (on average 3.9650856389986826) internal successors, (6019), 1518 states have internal predecessors, (6019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:35,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 6019 transitions. [2021-06-01 17:34:35,470 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 6019 transitions. Word has length 25 [2021-06-01 17:34:35,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:35,471 INFO L482 AbstractCegarLoop]: Abstraction has 1519 states and 6019 transitions. [2021-06-01 17:34:35,471 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:35,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 6019 transitions. [2021-06-01 17:34:35,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:35,473 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:35,473 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:35,473 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable565 [2021-06-01 17:34:35,473 INFO L430 AbstractCegarLoop]: === Iteration 567 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:35,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:35,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1789927933, now seen corresponding path program 563 times [2021-06-01 17:34:35,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:35,474 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839408472] [2021-06-01 17:34:35,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:35,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:35,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:35,549 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:35,549 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839408472] [2021-06-01 17:34:35,549 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839408472] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:35,550 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:35,550 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:35,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135755985] [2021-06-01 17:34:35,550 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:35,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:35,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:35,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:35,550 INFO L87 Difference]: Start difference. First operand 1519 states and 6019 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:35,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:35,610 INFO L93 Difference]: Finished difference Result 3198 states and 11971 transitions. [2021-06-01 17:34:35,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:35,610 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:35,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:35,616 INFO L225 Difference]: With dead ends: 3198 [2021-06-01 17:34:35,616 INFO L226 Difference]: Without dead ends: 2915 [2021-06-01 17:34:35,616 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:35,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2021-06-01 17:34:35,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 1555. [2021-06-01 17:34:35,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1555 states, 1554 states have (on average 3.9504504504504503) internal successors, (6139), 1554 states have internal predecessors, (6139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:35,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 6139 transitions. [2021-06-01 17:34:35,650 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 6139 transitions. Word has length 25 [2021-06-01 17:34:35,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:35,650 INFO L482 AbstractCegarLoop]: Abstraction has 1555 states and 6139 transitions. [2021-06-01 17:34:35,651 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:35,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 6139 transitions. [2021-06-01 17:34:35,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:35,653 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:35,653 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:35,653 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable566 [2021-06-01 17:34:35,653 INFO L430 AbstractCegarLoop]: === Iteration 568 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:35,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:35,653 INFO L82 PathProgramCache]: Analyzing trace with hash 397783387, now seen corresponding path program 564 times [2021-06-01 17:34:35,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:35,653 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729113439] [2021-06-01 17:34:35,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:35,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:35,729 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:35,729 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729113439] [2021-06-01 17:34:35,729 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729113439] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:35,729 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:35,729 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:35,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881870208] [2021-06-01 17:34:35,729 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:35,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:35,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:35,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:35,729 INFO L87 Difference]: Start difference. First operand 1555 states and 6139 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:35,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:35,793 INFO L93 Difference]: Finished difference Result 2986 states and 11234 transitions. [2021-06-01 17:34:35,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:35,793 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:35,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:35,798 INFO L225 Difference]: With dead ends: 2986 [2021-06-01 17:34:35,798 INFO L226 Difference]: Without dead ends: 2675 [2021-06-01 17:34:35,799 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:35,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2675 states. [2021-06-01 17:34:35,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2675 to 1507. [2021-06-01 17:34:35,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1507 states, 1506 states have (on average 3.9727755644090306) internal successors, (5983), 1506 states have internal predecessors, (5983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:35,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 5983 transitions. [2021-06-01 17:34:35,831 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 5983 transitions. Word has length 25 [2021-06-01 17:34:35,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:35,831 INFO L482 AbstractCegarLoop]: Abstraction has 1507 states and 5983 transitions. [2021-06-01 17:34:35,831 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:35,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 5983 transitions. [2021-06-01 17:34:35,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:35,833 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:35,833 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:35,833 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable567 [2021-06-01 17:34:35,833 INFO L430 AbstractCegarLoop]: === Iteration 569 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:35,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:35,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1112414649, now seen corresponding path program 565 times [2021-06-01 17:34:35,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:35,834 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242103741] [2021-06-01 17:34:35,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:35,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:35,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:35,911 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:35,911 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242103741] [2021-06-01 17:34:35,911 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242103741] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:35,911 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:35,911 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:35,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37653736] [2021-06-01 17:34:35,911 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:35,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:35,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:35,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:35,911 INFO L87 Difference]: Start difference. First operand 1507 states and 5983 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:35,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:35,961 INFO L93 Difference]: Finished difference Result 3050 states and 11355 transitions. [2021-06-01 17:34:35,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:35,961 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:35,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:35,966 INFO L225 Difference]: With dead ends: 3050 [2021-06-01 17:34:35,966 INFO L226 Difference]: Without dead ends: 2803 [2021-06-01 17:34:35,966 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:35,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2803 states. [2021-06-01 17:34:36,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2803 to 1507. [2021-06-01 17:34:36,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1507 states, 1506 states have (on average 3.962151394422311) internal successors, (5967), 1506 states have internal predecessors, (5967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:36,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 5967 transitions. [2021-06-01 17:34:36,024 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 5967 transitions. Word has length 25 [2021-06-01 17:34:36,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:36,024 INFO L482 AbstractCegarLoop]: Abstraction has 1507 states and 5967 transitions. [2021-06-01 17:34:36,024 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:36,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 5967 transitions. [2021-06-01 17:34:36,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:36,026 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:36,026 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:36,026 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable568 [2021-06-01 17:34:36,026 INFO L430 AbstractCegarLoop]: === Iteration 570 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:36,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:36,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1082554971, now seen corresponding path program 566 times [2021-06-01 17:34:36,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:36,026 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786288798] [2021-06-01 17:34:36,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:36,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:36,101 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:36,101 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786288798] [2021-06-01 17:34:36,101 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786288798] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:36,101 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:36,101 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:36,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27319999] [2021-06-01 17:34:36,102 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:36,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:36,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:36,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:36,102 INFO L87 Difference]: Start difference. First operand 1507 states and 5967 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:36,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:36,163 INFO L93 Difference]: Finished difference Result 3050 states and 11339 transitions. [2021-06-01 17:34:36,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:36,164 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:36,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:36,169 INFO L225 Difference]: With dead ends: 3050 [2021-06-01 17:34:36,170 INFO L226 Difference]: Without dead ends: 2787 [2021-06-01 17:34:36,170 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:36,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2787 states. [2021-06-01 17:34:36,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2787 to 1491. [2021-06-01 17:34:36,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1491 states, 1490 states have (on average 3.9671140939597316) internal successors, (5911), 1490 states have internal predecessors, (5911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:36,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1491 states to 1491 states and 5911 transitions. [2021-06-01 17:34:36,204 INFO L78 Accepts]: Start accepts. Automaton has 1491 states and 5911 transitions. Word has length 25 [2021-06-01 17:34:36,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:36,204 INFO L482 AbstractCegarLoop]: Abstraction has 1491 states and 5911 transitions. [2021-06-01 17:34:36,204 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:36,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1491 states and 5911 transitions. [2021-06-01 17:34:36,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:36,206 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:36,206 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:36,206 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable569 [2021-06-01 17:34:36,206 INFO L430 AbstractCegarLoop]: === Iteration 571 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:36,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:36,206 INFO L82 PathProgramCache]: Analyzing trace with hash 631512603, now seen corresponding path program 567 times [2021-06-01 17:34:36,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:36,206 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693545590] [2021-06-01 17:34:36,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:36,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:36,284 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:36,284 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693545590] [2021-06-01 17:34:36,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693545590] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:36,284 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:36,284 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:36,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346301426] [2021-06-01 17:34:36,284 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:36,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:36,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:36,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:36,285 INFO L87 Difference]: Start difference. First operand 1491 states and 5911 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:36,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:36,336 INFO L93 Difference]: Finished difference Result 2994 states and 11151 transitions. [2021-06-01 17:34:36,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:36,336 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:36,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:36,341 INFO L225 Difference]: With dead ends: 2994 [2021-06-01 17:34:36,341 INFO L226 Difference]: Without dead ends: 2747 [2021-06-01 17:34:36,342 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:36,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2747 states. [2021-06-01 17:34:36,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2747 to 1435. [2021-06-01 17:34:36,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1435 states, 1434 states have (on average 3.9630404463040447) internal successors, (5683), 1434 states have internal predecessors, (5683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:36,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1435 states to 1435 states and 5683 transitions. [2021-06-01 17:34:36,374 INFO L78 Accepts]: Start accepts. Automaton has 1435 states and 5683 transitions. Word has length 25 [2021-06-01 17:34:36,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:36,374 INFO L482 AbstractCegarLoop]: Abstraction has 1435 states and 5683 transitions. [2021-06-01 17:34:36,374 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:36,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1435 states and 5683 transitions. [2021-06-01 17:34:36,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:36,376 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:36,376 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:36,376 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable570 [2021-06-01 17:34:36,376 INFO L430 AbstractCegarLoop]: === Iteration 572 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:36,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:36,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1495457317, now seen corresponding path program 568 times [2021-06-01 17:34:36,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:36,376 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20077045] [2021-06-01 17:34:36,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:36,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:36,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:36,453 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:36,453 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20077045] [2021-06-01 17:34:36,453 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20077045] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:36,453 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:36,453 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:36,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370417196] [2021-06-01 17:34:36,453 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:36,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:36,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:36,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:36,453 INFO L87 Difference]: Start difference. First operand 1435 states and 5683 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:36,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:36,515 INFO L93 Difference]: Finished difference Result 2818 states and 10574 transitions. [2021-06-01 17:34:36,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:36,516 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:36,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:36,520 INFO L225 Difference]: With dead ends: 2818 [2021-06-01 17:34:36,520 INFO L226 Difference]: Without dead ends: 2531 [2021-06-01 17:34:36,521 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:36,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2531 states. [2021-06-01 17:34:36,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2531 to 1411. [2021-06-01 17:34:36,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1410 states have (on average 3.9709219858156026) internal successors, (5599), 1410 states have internal predecessors, (5599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:36,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 5599 transitions. [2021-06-01 17:34:36,551 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 5599 transitions. Word has length 25 [2021-06-01 17:34:36,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:36,551 INFO L482 AbstractCegarLoop]: Abstraction has 1411 states and 5599 transitions. [2021-06-01 17:34:36,551 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:36,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 5599 transitions. [2021-06-01 17:34:36,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:36,553 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:36,553 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:36,553 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable571 [2021-06-01 17:34:36,553 INFO L430 AbstractCegarLoop]: === Iteration 573 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:36,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:36,554 INFO L82 PathProgramCache]: Analyzing trace with hash -798035459, now seen corresponding path program 569 times [2021-06-01 17:34:36,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:36,554 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490212063] [2021-06-01 17:34:36,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:36,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:36,629 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:36,629 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490212063] [2021-06-01 17:34:36,629 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490212063] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:36,629 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:36,629 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:36,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894125055] [2021-06-01 17:34:36,629 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:36,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:36,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:36,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:36,629 INFO L87 Difference]: Start difference. First operand 1411 states and 5599 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:36,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:36,690 INFO L93 Difference]: Finished difference Result 2802 states and 10518 transitions. [2021-06-01 17:34:36,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:36,691 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:36,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:36,696 INFO L225 Difference]: With dead ends: 2802 [2021-06-01 17:34:36,696 INFO L226 Difference]: Without dead ends: 2555 [2021-06-01 17:34:36,696 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:36,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2555 states. [2021-06-01 17:34:36,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2555 to 1435. [2021-06-01 17:34:36,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1435 states, 1434 states have (on average 3.9574616457461644) internal successors, (5675), 1434 states have internal predecessors, (5675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:36,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1435 states to 1435 states and 5675 transitions. [2021-06-01 17:34:36,726 INFO L78 Accepts]: Start accepts. Automaton has 1435 states and 5675 transitions. Word has length 25 [2021-06-01 17:34:36,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:36,726 INFO L482 AbstractCegarLoop]: Abstraction has 1435 states and 5675 transitions. [2021-06-01 17:34:36,726 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:36,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1435 states and 5675 transitions. [2021-06-01 17:34:36,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:36,728 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:36,728 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:36,728 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable572 [2021-06-01 17:34:36,728 INFO L430 AbstractCegarLoop]: === Iteration 574 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:36,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:36,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1453594843, now seen corresponding path program 570 times [2021-06-01 17:34:36,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:36,728 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937717318] [2021-06-01 17:34:36,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:36,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:36,804 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:36,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937717318] [2021-06-01 17:34:36,804 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937717318] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:36,804 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:36,804 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:36,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426247897] [2021-06-01 17:34:36,804 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:36,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:36,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:36,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:36,805 INFO L87 Difference]: Start difference. First operand 1435 states and 5675 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:36,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:36,865 INFO L93 Difference]: Finished difference Result 2554 states and 9665 transitions. [2021-06-01 17:34:36,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:36,866 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:36,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:36,870 INFO L225 Difference]: With dead ends: 2554 [2021-06-01 17:34:36,870 INFO L226 Difference]: Without dead ends: 2259 [2021-06-01 17:34:36,871 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:36,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2259 states. [2021-06-01 17:34:36,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2259 to 1403. [2021-06-01 17:34:36,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1403 states, 1402 states have (on average 3.9764621968616263) internal successors, (5575), 1402 states have internal predecessors, (5575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:36,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 5575 transitions. [2021-06-01 17:34:36,899 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 5575 transitions. Word has length 25 [2021-06-01 17:34:36,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:36,899 INFO L482 AbstractCegarLoop]: Abstraction has 1403 states and 5575 transitions. [2021-06-01 17:34:36,899 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:36,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 5575 transitions. [2021-06-01 17:34:36,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:36,901 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:36,901 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:36,901 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable573 [2021-06-01 17:34:36,901 INFO L430 AbstractCegarLoop]: === Iteration 575 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:36,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:36,901 INFO L82 PathProgramCache]: Analyzing trace with hash 442075645, now seen corresponding path program 571 times [2021-06-01 17:34:36,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:36,901 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482658529] [2021-06-01 17:34:36,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:36,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:36,977 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:36,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482658529] [2021-06-01 17:34:36,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482658529] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:36,978 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:36,978 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:36,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132434177] [2021-06-01 17:34:36,978 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:36,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:36,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:36,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:36,978 INFO L87 Difference]: Start difference. First operand 1403 states and 5575 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:37,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:37,042 INFO L93 Difference]: Finished difference Result 2902 states and 10946 transitions. [2021-06-01 17:34:37,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:37,042 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:37,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:37,047 INFO L225 Difference]: With dead ends: 2902 [2021-06-01 17:34:37,047 INFO L226 Difference]: Without dead ends: 2619 [2021-06-01 17:34:37,047 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:37,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2619 states. [2021-06-01 17:34:37,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2619 to 1443. [2021-06-01 17:34:37,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1443 states, 1442 states have (on average 3.966019417475728) internal successors, (5719), 1442 states have internal predecessors, (5719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:37,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 5719 transitions. [2021-06-01 17:34:37,078 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 5719 transitions. Word has length 25 [2021-06-01 17:34:37,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:37,078 INFO L482 AbstractCegarLoop]: Abstraction has 1443 states and 5719 transitions. [2021-06-01 17:34:37,078 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:37,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 5719 transitions. [2021-06-01 17:34:37,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:37,080 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:37,080 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:37,080 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable574 [2021-06-01 17:34:37,080 INFO L430 AbstractCegarLoop]: === Iteration 576 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:37,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:37,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1601261349, now seen corresponding path program 572 times [2021-06-01 17:34:37,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:37,080 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779546019] [2021-06-01 17:34:37,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:37,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:37,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:37,157 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:37,157 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779546019] [2021-06-01 17:34:37,157 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779546019] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:37,157 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:37,157 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:37,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977831948] [2021-06-01 17:34:37,157 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:37,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:37,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:37,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:37,157 INFO L87 Difference]: Start difference. First operand 1443 states and 5719 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:37,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:37,218 INFO L93 Difference]: Finished difference Result 2866 states and 10770 transitions. [2021-06-01 17:34:37,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:37,218 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:37,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:37,223 INFO L225 Difference]: With dead ends: 2866 [2021-06-01 17:34:37,223 INFO L226 Difference]: Without dead ends: 2591 [2021-06-01 17:34:37,223 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:37,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2021-06-01 17:34:37,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 1415. [2021-06-01 17:34:37,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1415 states, 1414 states have (on average 3.973833097595474) internal successors, (5619), 1414 states have internal predecessors, (5619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:37,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 5619 transitions. [2021-06-01 17:34:37,254 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 5619 transitions. Word has length 25 [2021-06-01 17:34:37,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:37,254 INFO L482 AbstractCegarLoop]: Abstraction has 1415 states and 5619 transitions. [2021-06-01 17:34:37,254 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:37,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 5619 transitions. [2021-06-01 17:34:37,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:37,256 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:37,256 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:37,256 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable575 [2021-06-01 17:34:37,256 INFO L430 AbstractCegarLoop]: === Iteration 577 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:37,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:37,256 INFO L82 PathProgramCache]: Analyzing trace with hash -404721317, now seen corresponding path program 573 times [2021-06-01 17:34:37,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:37,256 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606244400] [2021-06-01 17:34:37,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:37,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:37,333 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:37,333 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606244400] [2021-06-01 17:34:37,333 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606244400] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:37,333 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:37,334 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:37,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971498160] [2021-06-01 17:34:37,334 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:37,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:37,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:37,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:37,334 INFO L87 Difference]: Start difference. First operand 1415 states and 5619 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:37,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:37,399 INFO L93 Difference]: Finished difference Result 2782 states and 10466 transitions. [2021-06-01 17:34:37,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:37,399 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:37,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:37,404 INFO L225 Difference]: With dead ends: 2782 [2021-06-01 17:34:37,404 INFO L226 Difference]: Without dead ends: 2499 [2021-06-01 17:34:37,404 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:37,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2499 states. [2021-06-01 17:34:37,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2499 to 1451. [2021-06-01 17:34:37,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1451 states, 1450 states have (on average 3.9579310344827587) internal successors, (5739), 1450 states have internal predecessors, (5739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:37,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 5739 transitions. [2021-06-01 17:34:37,435 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 5739 transitions. Word has length 25 [2021-06-01 17:34:37,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:37,435 INFO L482 AbstractCegarLoop]: Abstraction has 1451 states and 5739 transitions. [2021-06-01 17:34:37,435 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:37,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 5739 transitions. [2021-06-01 17:34:37,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:37,436 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:37,437 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:37,437 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable576 [2021-06-01 17:34:37,437 INFO L430 AbstractCegarLoop]: === Iteration 578 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:37,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:37,437 INFO L82 PathProgramCache]: Analyzing trace with hash 787745115, now seen corresponding path program 574 times [2021-06-01 17:34:37,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:37,437 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094668644] [2021-06-01 17:34:37,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:37,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:37,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:37,512 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:37,512 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094668644] [2021-06-01 17:34:37,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094668644] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:37,512 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:37,512 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:37,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118256522] [2021-06-01 17:34:37,512 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:37,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:37,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:37,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:37,512 INFO L87 Difference]: Start difference. First operand 1451 states and 5739 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:37,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:37,582 INFO L93 Difference]: Finished difference Result 2570 states and 9729 transitions. [2021-06-01 17:34:37,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:37,582 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:37,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:37,587 INFO L225 Difference]: With dead ends: 2570 [2021-06-01 17:34:37,587 INFO L226 Difference]: Without dead ends: 2271 [2021-06-01 17:34:37,587 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:37,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2271 states. [2021-06-01 17:34:37,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2271 to 1415. [2021-06-01 17:34:37,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1415 states, 1414 states have (on average 3.9653465346534653) internal successors, (5607), 1414 states have internal predecessors, (5607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:37,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 5607 transitions. [2021-06-01 17:34:37,616 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 5607 transitions. Word has length 25 [2021-06-01 17:34:37,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:37,616 INFO L482 AbstractCegarLoop]: Abstraction has 1415 states and 5607 transitions. [2021-06-01 17:34:37,616 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:37,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 5607 transitions. [2021-06-01 17:34:37,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:37,617 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:37,617 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:37,617 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable577 [2021-06-01 17:34:37,618 INFO L430 AbstractCegarLoop]: === Iteration 579 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:37,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:37,618 INFO L82 PathProgramCache]: Analyzing trace with hash 577626297, now seen corresponding path program 575 times [2021-06-01 17:34:37,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:37,618 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679404377] [2021-06-01 17:34:37,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:37,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:37,696 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:37,696 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679404377] [2021-06-01 17:34:37,696 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679404377] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:37,696 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:37,696 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:37,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805424134] [2021-06-01 17:34:37,696 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:37,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:37,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:37,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:37,697 INFO L87 Difference]: Start difference. First operand 1415 states and 5607 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:37,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:37,758 INFO L93 Difference]: Finished difference Result 2462 states and 9321 transitions. [2021-06-01 17:34:37,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:37,759 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:37,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:37,763 INFO L225 Difference]: With dead ends: 2462 [2021-06-01 17:34:37,763 INFO L226 Difference]: Without dead ends: 2215 [2021-06-01 17:34:37,763 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:37,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2215 states. [2021-06-01 17:34:37,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2215 to 1439. [2021-06-01 17:34:37,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1439 states, 1438 states have (on average 3.9520166898470097) internal successors, (5683), 1438 states have internal predecessors, (5683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:37,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 5683 transitions. [2021-06-01 17:34:37,791 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 5683 transitions. Word has length 25 [2021-06-01 17:34:37,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:37,791 INFO L482 AbstractCegarLoop]: Abstraction has 1439 states and 5683 transitions. [2021-06-01 17:34:37,791 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:37,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 5683 transitions. [2021-06-01 17:34:37,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:37,793 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:37,793 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:37,793 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable578 [2021-06-01 17:34:37,793 INFO L430 AbstractCegarLoop]: === Iteration 580 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:37,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:37,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1658688923, now seen corresponding path program 576 times [2021-06-01 17:34:37,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:37,794 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186129921] [2021-06-01 17:34:37,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:37,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:37,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:37,870 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:37,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186129921] [2021-06-01 17:34:37,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186129921] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:37,870 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:37,870 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:37,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705517880] [2021-06-01 17:34:37,870 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:37,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:37,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:37,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:37,871 INFO L87 Difference]: Start difference. First operand 1439 states and 5683 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:37,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:37,926 INFO L93 Difference]: Finished difference Result 2214 states and 8468 transitions. [2021-06-01 17:34:37,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:37,926 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:37,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:37,930 INFO L225 Difference]: With dead ends: 2214 [2021-06-01 17:34:37,930 INFO L226 Difference]: Without dead ends: 1911 [2021-06-01 17:34:37,930 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:37,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1911 states. [2021-06-01 17:34:37,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1911 to 1399. [2021-06-01 17:34:37,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1399 states, 1398 states have (on average 3.98068669527897) internal successors, (5565), 1398 states have internal predecessors, (5565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:37,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 5565 transitions. [2021-06-01 17:34:37,958 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 5565 transitions. Word has length 25 [2021-06-01 17:34:37,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:37,958 INFO L482 AbstractCegarLoop]: Abstraction has 1399 states and 5565 transitions. [2021-06-01 17:34:37,958 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:37,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 5565 transitions. [2021-06-01 17:34:37,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:37,960 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:37,960 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:37,960 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable579 [2021-06-01 17:34:37,960 INFO L430 AbstractCegarLoop]: === Iteration 581 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:37,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:37,960 INFO L82 PathProgramCache]: Analyzing trace with hash 112877023, now seen corresponding path program 577 times [2021-06-01 17:34:37,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:37,960 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9713617] [2021-06-01 17:34:37,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:37,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:38,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:38,035 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:38,035 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9713617] [2021-06-01 17:34:38,035 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9713617] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:38,035 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:38,035 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:38,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606443312] [2021-06-01 17:34:38,035 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:38,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:38,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:38,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:38,035 INFO L87 Difference]: Start difference. First operand 1399 states and 5565 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:38,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:38,095 INFO L93 Difference]: Finished difference Result 3066 states and 11656 transitions. [2021-06-01 17:34:38,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:38,096 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:38,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:38,101 INFO L225 Difference]: With dead ends: 3066 [2021-06-01 17:34:38,101 INFO L226 Difference]: Without dead ends: 2781 [2021-06-01 17:34:38,101 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:38,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2781 states. [2021-06-01 17:34:38,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2781 to 1465. [2021-06-01 17:34:38,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1465 states, 1464 states have (on average 3.971311475409836) internal successors, (5814), 1464 states have internal predecessors, (5814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:38,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 5814 transitions. [2021-06-01 17:34:38,133 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 5814 transitions. Word has length 25 [2021-06-01 17:34:38,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:38,133 INFO L482 AbstractCegarLoop]: Abstraction has 1465 states and 5814 transitions. [2021-06-01 17:34:38,133 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:38,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 5814 transitions. [2021-06-01 17:34:38,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:38,135 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:38,135 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:38,135 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable580 [2021-06-01 17:34:38,135 INFO L430 AbstractCegarLoop]: === Iteration 582 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:38,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:38,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1930459971, now seen corresponding path program 578 times [2021-06-01 17:34:38,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:38,135 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917673636] [2021-06-01 17:34:38,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:38,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:38,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:38,211 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:38,211 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917673636] [2021-06-01 17:34:38,211 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917673636] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:38,211 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:38,211 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:38,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643238345] [2021-06-01 17:34:38,212 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:38,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:38,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:38,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:38,212 INFO L87 Difference]: Start difference. First operand 1465 states and 5814 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:38,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:38,272 INFO L93 Difference]: Finished difference Result 3064 states and 11605 transitions. [2021-06-01 17:34:38,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:38,272 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:38,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:38,277 INFO L225 Difference]: With dead ends: 3064 [2021-06-01 17:34:38,278 INFO L226 Difference]: Without dead ends: 2735 [2021-06-01 17:34:38,278 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:38,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2735 states. [2021-06-01 17:34:38,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2735 to 1419. [2021-06-01 17:34:38,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1419 states, 1418 states have (on average 3.9823695345557124) internal successors, (5647), 1418 states have internal predecessors, (5647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:38,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 5647 transitions. [2021-06-01 17:34:38,309 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 5647 transitions. Word has length 25 [2021-06-01 17:34:38,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:38,309 INFO L482 AbstractCegarLoop]: Abstraction has 1419 states and 5647 transitions. [2021-06-01 17:34:38,309 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:38,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 5647 transitions. [2021-06-01 17:34:38,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:38,311 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:38,311 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:38,311 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable581 [2021-06-01 17:34:38,311 INFO L430 AbstractCegarLoop]: === Iteration 583 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:38,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:38,312 INFO L82 PathProgramCache]: Analyzing trace with hash -733919939, now seen corresponding path program 579 times [2021-06-01 17:34:38,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:38,312 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529408404] [2021-06-01 17:34:38,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:38,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:38,387 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:38,387 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529408404] [2021-06-01 17:34:38,387 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529408404] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:38,387 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:38,387 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:38,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171120036] [2021-06-01 17:34:38,387 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:38,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:38,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:38,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:38,388 INFO L87 Difference]: Start difference. First operand 1419 states and 5647 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:38,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:38,446 INFO L93 Difference]: Finished difference Result 3012 states and 11411 transitions. [2021-06-01 17:34:38,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:38,446 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:38,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:38,451 INFO L225 Difference]: With dead ends: 3012 [2021-06-01 17:34:38,452 INFO L226 Difference]: Without dead ends: 2727 [2021-06-01 17:34:38,452 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:38,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2727 states. [2021-06-01 17:34:38,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2727 to 1447. [2021-06-01 17:34:38,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1447 states, 1446 states have (on average 3.9661134163208853) internal successors, (5735), 1446 states have internal predecessors, (5735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:38,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1447 states to 1447 states and 5735 transitions. [2021-06-01 17:34:38,493 INFO L78 Accepts]: Start accepts. Automaton has 1447 states and 5735 transitions. Word has length 25 [2021-06-01 17:34:38,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:38,493 INFO L482 AbstractCegarLoop]: Abstraction has 1447 states and 5735 transitions. [2021-06-01 17:34:38,493 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:38,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1447 states and 5735 transitions. [2021-06-01 17:34:38,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:38,494 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:38,494 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:38,495 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable582 [2021-06-01 17:34:38,495 INFO L430 AbstractCegarLoop]: === Iteration 584 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:38,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:38,495 INFO L82 PathProgramCache]: Analyzing trace with hash 458546493, now seen corresponding path program 580 times [2021-06-01 17:34:38,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:38,495 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227716410] [2021-06-01 17:34:38,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:38,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:38,568 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:38,568 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227716410] [2021-06-01 17:34:38,568 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227716410] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:38,568 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:38,568 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:38,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053339066] [2021-06-01 17:34:38,568 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:38,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:38,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:38,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:38,569 INFO L87 Difference]: Start difference. First operand 1447 states and 5735 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:38,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:38,630 INFO L93 Difference]: Finished difference Result 2974 states and 11230 transitions. [2021-06-01 17:34:38,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:38,630 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:38,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:38,635 INFO L225 Difference]: With dead ends: 2974 [2021-06-01 17:34:38,635 INFO L226 Difference]: Without dead ends: 2699 [2021-06-01 17:34:38,636 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:38,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2699 states. [2021-06-01 17:34:38,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2699 to 1419. [2021-06-01 17:34:38,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1419 states, 1418 states have (on average 3.972496473906911) internal successors, (5633), 1418 states have internal predecessors, (5633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:38,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 5633 transitions. [2021-06-01 17:34:38,667 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 5633 transitions. Word has length 25 [2021-06-01 17:34:38,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:38,667 INFO L482 AbstractCegarLoop]: Abstraction has 1419 states and 5633 transitions. [2021-06-01 17:34:38,667 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:38,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 5633 transitions. [2021-06-01 17:34:38,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:38,669 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:38,669 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:38,669 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable583 [2021-06-01 17:34:38,669 INFO L430 AbstractCegarLoop]: === Iteration 585 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:38,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:38,669 INFO L82 PathProgramCache]: Analyzing trace with hash 248427675, now seen corresponding path program 581 times [2021-06-01 17:34:38,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:38,669 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328550640] [2021-06-01 17:34:38,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:38,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:38,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:38,744 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:38,744 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328550640] [2021-06-01 17:34:38,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328550640] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:38,744 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:38,744 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:38,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683539803] [2021-06-01 17:34:38,744 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:38,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:38,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:38,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:38,745 INFO L87 Difference]: Start difference. First operand 1419 states and 5633 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:38,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:38,804 INFO L93 Difference]: Finished difference Result 3008 states and 11387 transitions. [2021-06-01 17:34:38,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:38,804 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:38,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:38,809 INFO L225 Difference]: With dead ends: 3008 [2021-06-01 17:34:38,809 INFO L226 Difference]: Without dead ends: 2725 [2021-06-01 17:34:38,809 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:38,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2725 states. [2021-06-01 17:34:38,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2725 to 1447. [2021-06-01 17:34:38,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1447 states, 1446 states have (on average 3.9564315352697097) internal successors, (5721), 1446 states have internal predecessors, (5721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:38,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1447 states to 1447 states and 5721 transitions. [2021-06-01 17:34:38,840 INFO L78 Accepts]: Start accepts. Automaton has 1447 states and 5721 transitions. Word has length 25 [2021-06-01 17:34:38,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:38,840 INFO L482 AbstractCegarLoop]: Abstraction has 1447 states and 5721 transitions. [2021-06-01 17:34:38,840 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:38,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1447 states and 5721 transitions. [2021-06-01 17:34:38,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:38,842 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:38,842 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:38,842 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable584 [2021-06-01 17:34:38,842 INFO L430 AbstractCegarLoop]: === Iteration 586 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:38,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:38,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1329490301, now seen corresponding path program 582 times [2021-06-01 17:34:38,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:38,842 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177524817] [2021-06-01 17:34:38,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:38,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:38,918 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:38,918 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177524817] [2021-06-01 17:34:38,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177524817] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:38,918 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:38,918 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:38,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785300770] [2021-06-01 17:34:38,918 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:38,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:38,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:38,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:38,918 INFO L87 Difference]: Start difference. First operand 1447 states and 5721 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:38,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:38,977 INFO L93 Difference]: Finished difference Result 2972 states and 11211 transitions. [2021-06-01 17:34:38,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:38,978 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:38,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:38,983 INFO L225 Difference]: With dead ends: 2972 [2021-06-01 17:34:38,983 INFO L226 Difference]: Without dead ends: 2683 [2021-06-01 17:34:38,983 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:38,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2683 states. [2021-06-01 17:34:39,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2683 to 1405. [2021-06-01 17:34:39,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1405 states, 1404 states have (on average 3.9814814814814814) internal successors, (5590), 1404 states have internal predecessors, (5590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:39,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1405 states to 1405 states and 5590 transitions. [2021-06-01 17:34:39,014 INFO L78 Accepts]: Start accepts. Automaton has 1405 states and 5590 transitions. Word has length 25 [2021-06-01 17:34:39,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:39,014 INFO L482 AbstractCegarLoop]: Abstraction has 1405 states and 5590 transitions. [2021-06-01 17:34:39,014 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:39,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1405 states and 5590 transitions. [2021-06-01 17:34:39,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:39,016 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:39,016 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:39,016 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable585 [2021-06-01 17:34:39,016 INFO L430 AbstractCegarLoop]: === Iteration 587 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:39,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:39,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1910184515, now seen corresponding path program 583 times [2021-06-01 17:34:39,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:39,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630918443] [2021-06-01 17:34:39,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:39,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:39,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:39,090 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:39,090 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630918443] [2021-06-01 17:34:39,090 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630918443] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:39,090 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:39,090 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:39,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298599247] [2021-06-01 17:34:39,090 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:39,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:39,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:39,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:39,091 INFO L87 Difference]: Start difference. First operand 1405 states and 5590 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:39,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:39,151 INFO L93 Difference]: Finished difference Result 3006 states and 11386 transitions. [2021-06-01 17:34:39,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:39,151 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:39,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:39,157 INFO L225 Difference]: With dead ends: 3006 [2021-06-01 17:34:39,157 INFO L226 Difference]: Without dead ends: 2721 [2021-06-01 17:34:39,157 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:39,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2721 states. [2021-06-01 17:34:39,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2721 to 1469. [2021-06-01 17:34:39,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1469 states, 1468 states have (on average 3.9713896457765667) internal successors, (5830), 1468 states have internal predecessors, (5830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:39,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 5830 transitions. [2021-06-01 17:34:39,189 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 5830 transitions. Word has length 25 [2021-06-01 17:34:39,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:39,189 INFO L482 AbstractCegarLoop]: Abstraction has 1469 states and 5830 transitions. [2021-06-01 17:34:39,189 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:39,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 5830 transitions. [2021-06-01 17:34:39,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:39,191 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:39,191 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:39,191 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable586 [2021-06-01 17:34:39,191 INFO L430 AbstractCegarLoop]: === Iteration 588 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:39,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:39,191 INFO L82 PathProgramCache]: Analyzing trace with hash 341445787, now seen corresponding path program 584 times [2021-06-01 17:34:39,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:39,191 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713525872] [2021-06-01 17:34:39,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:39,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:39,269 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:39,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713525872] [2021-06-01 17:34:39,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713525872] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:39,269 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:39,269 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:39,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613353470] [2021-06-01 17:34:39,269 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:39,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:39,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:39,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:39,270 INFO L87 Difference]: Start difference. First operand 1469 states and 5830 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:39,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:39,329 INFO L93 Difference]: Finished difference Result 3004 states and 11335 transitions. [2021-06-01 17:34:39,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:39,330 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:39,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:39,335 INFO L225 Difference]: With dead ends: 3004 [2021-06-01 17:34:39,335 INFO L226 Difference]: Without dead ends: 2675 [2021-06-01 17:34:39,335 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:39,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2675 states. [2021-06-01 17:34:39,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2675 to 1423. [2021-06-01 17:34:39,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1423 states, 1422 states have (on average 3.979606188466948) internal successors, (5659), 1422 states have internal predecessors, (5659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:39,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 5659 transitions. [2021-06-01 17:34:39,365 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 5659 transitions. Word has length 25 [2021-06-01 17:34:39,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:39,365 INFO L482 AbstractCegarLoop]: Abstraction has 1423 states and 5659 transitions. [2021-06-01 17:34:39,366 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:39,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 5659 transitions. [2021-06-01 17:34:39,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:39,367 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:39,367 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:39,367 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable587 [2021-06-01 17:34:39,367 INFO L430 AbstractCegarLoop]: === Iteration 589 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:39,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:39,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1588755901, now seen corresponding path program 585 times [2021-06-01 17:34:39,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:39,368 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859459326] [2021-06-01 17:34:39,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:39,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:39,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:39,468 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:39,468 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859459326] [2021-06-01 17:34:39,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859459326] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:39,468 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:39,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:39,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871227490] [2021-06-01 17:34:39,468 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:39,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:39,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:39,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:39,469 INFO L87 Difference]: Start difference. First operand 1423 states and 5659 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:39,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:39,540 INFO L93 Difference]: Finished difference Result 2882 states and 10892 transitions. [2021-06-01 17:34:39,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:39,540 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:39,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:39,547 INFO L225 Difference]: With dead ends: 2882 [2021-06-01 17:34:39,547 INFO L226 Difference]: Without dead ends: 2597 [2021-06-01 17:34:39,548 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:39,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2597 states. [2021-06-01 17:34:39,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2597 to 1459. [2021-06-01 17:34:39,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1459 states, 1458 states have (on average 3.9636488340192044) internal successors, (5779), 1458 states have internal predecessors, (5779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:39,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 5779 transitions. [2021-06-01 17:34:39,592 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 5779 transitions. Word has length 25 [2021-06-01 17:34:39,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:39,592 INFO L482 AbstractCegarLoop]: Abstraction has 1459 states and 5779 transitions. [2021-06-01 17:34:39,592 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:39,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 5779 transitions. [2021-06-01 17:34:39,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:39,594 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:39,594 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:39,595 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable588 [2021-06-01 17:34:39,595 INFO L430 AbstractCegarLoop]: === Iteration 590 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:39,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:39,595 INFO L82 PathProgramCache]: Analyzing trace with hash 2144544189, now seen corresponding path program 586 times [2021-06-01 17:34:39,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:39,595 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572018874] [2021-06-01 17:34:39,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:39,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:39,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:39,696 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:39,696 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572018874] [2021-06-01 17:34:39,696 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572018874] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:39,696 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:39,696 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:39,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000721616] [2021-06-01 17:34:39,696 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:39,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:39,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:39,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:39,696 INFO L87 Difference]: Start difference. First operand 1459 states and 5779 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:39,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:39,769 INFO L93 Difference]: Finished difference Result 2668 states and 10150 transitions. [2021-06-01 17:34:39,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:39,769 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:39,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:39,774 INFO L225 Difference]: With dead ends: 2668 [2021-06-01 17:34:39,774 INFO L226 Difference]: Without dead ends: 2369 [2021-06-01 17:34:39,774 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 124.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:39,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2369 states. [2021-06-01 17:34:39,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2369 to 1423. [2021-06-01 17:34:39,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1423 states, 1422 states have (on average 3.966947960618847) internal successors, (5641), 1422 states have internal predecessors, (5641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:39,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 5641 transitions. [2021-06-01 17:34:39,803 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 5641 transitions. Word has length 25 [2021-06-01 17:34:39,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:39,804 INFO L482 AbstractCegarLoop]: Abstraction has 1423 states and 5641 transitions. [2021-06-01 17:34:39,804 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:39,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 5641 transitions. [2021-06-01 17:34:39,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:39,805 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:39,805 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:39,805 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable589 [2021-06-01 17:34:39,806 INFO L430 AbstractCegarLoop]: === Iteration 591 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:39,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:39,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1723863781, now seen corresponding path program 587 times [2021-06-01 17:34:39,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:39,806 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944313732] [2021-06-01 17:34:39,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:39,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:39,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:39,881 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:39,881 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944313732] [2021-06-01 17:34:39,881 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944313732] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:39,881 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:39,881 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:39,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076179219] [2021-06-01 17:34:39,881 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:39,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:39,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:39,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:39,882 INFO L87 Difference]: Start difference. First operand 1423 states and 5641 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:39,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:39,950 INFO L93 Difference]: Finished difference Result 2880 states and 10869 transitions. [2021-06-01 17:34:39,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:39,950 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:39,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:39,955 INFO L225 Difference]: With dead ends: 2880 [2021-06-01 17:34:39,955 INFO L226 Difference]: Without dead ends: 2597 [2021-06-01 17:34:39,955 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:39,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2597 states. [2021-06-01 17:34:39,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2597 to 1459. [2021-06-01 17:34:39,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1459 states, 1458 states have (on average 3.9513031550068587) internal successors, (5761), 1458 states have internal predecessors, (5761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:39,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 5761 transitions. [2021-06-01 17:34:39,986 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 5761 transitions. Word has length 25 [2021-06-01 17:34:39,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:39,986 INFO L482 AbstractCegarLoop]: Abstraction has 1459 states and 5761 transitions. [2021-06-01 17:34:39,986 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:39,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 5761 transitions. [2021-06-01 17:34:39,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:39,988 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:39,988 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:39,988 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable590 [2021-06-01 17:34:39,988 INFO L430 AbstractCegarLoop]: === Iteration 592 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:39,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:39,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1930671747, now seen corresponding path program 588 times [2021-06-01 17:34:39,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:39,988 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078335104] [2021-06-01 17:34:39,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:40,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:40,062 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:40,062 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078335104] [2021-06-01 17:34:40,062 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078335104] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:40,062 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:40,062 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:40,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169261052] [2021-06-01 17:34:40,062 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:40,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:40,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:40,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:40,062 INFO L87 Difference]: Start difference. First operand 1459 states and 5761 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:40,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:40,130 INFO L93 Difference]: Finished difference Result 2668 states and 10132 transitions. [2021-06-01 17:34:40,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:40,130 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:40,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:40,134 INFO L225 Difference]: With dead ends: 2668 [2021-06-01 17:34:40,135 INFO L226 Difference]: Without dead ends: 2351 [2021-06-01 17:34:40,135 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:40,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2351 states. [2021-06-01 17:34:40,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2351 to 1405. [2021-06-01 17:34:40,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1405 states, 1404 states have (on average 3.977207977207977) internal successors, (5584), 1404 states have internal predecessors, (5584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:40,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1405 states to 1405 states and 5584 transitions. [2021-06-01 17:34:40,163 INFO L78 Accepts]: Start accepts. Automaton has 1405 states and 5584 transitions. Word has length 25 [2021-06-01 17:34:40,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:40,163 INFO L482 AbstractCegarLoop]: Abstraction has 1405 states and 5584 transitions. [2021-06-01 17:34:40,163 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:40,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1405 states and 5584 transitions. [2021-06-01 17:34:40,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:40,165 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:40,165 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:40,165 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable591 [2021-06-01 17:34:40,165 INFO L430 AbstractCegarLoop]: === Iteration 593 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:40,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:40,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1528034715, now seen corresponding path program 589 times [2021-06-01 17:34:40,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:40,165 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668950966] [2021-06-01 17:34:40,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:40,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:40,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:40,239 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:40,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668950966] [2021-06-01 17:34:40,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668950966] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:40,239 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:40,239 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:40,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020018167] [2021-06-01 17:34:40,239 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:40,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:40,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:40,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:40,240 INFO L87 Difference]: Start difference. First operand 1405 states and 5584 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:40,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:40,309 INFO L93 Difference]: Finished difference Result 2812 states and 10589 transitions. [2021-06-01 17:34:40,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:40,310 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:40,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:40,314 INFO L225 Difference]: With dead ends: 2812 [2021-06-01 17:34:40,315 INFO L226 Difference]: Without dead ends: 2527 [2021-06-01 17:34:40,315 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:40,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2527 states. [2021-06-01 17:34:40,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2527 to 1445. [2021-06-01 17:34:40,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1444 states have (on average 3.966759002770083) internal successors, (5728), 1444 states have internal predecessors, (5728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:40,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 5728 transitions. [2021-06-01 17:34:40,344 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 5728 transitions. Word has length 25 [2021-06-01 17:34:40,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:40,345 INFO L482 AbstractCegarLoop]: Abstraction has 1445 states and 5728 transitions. [2021-06-01 17:34:40,345 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:40,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 5728 transitions. [2021-06-01 17:34:40,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:40,346 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:40,347 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:40,347 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable592 [2021-06-01 17:34:40,347 INFO L430 AbstractCegarLoop]: === Iteration 594 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:40,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:40,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1574466149, now seen corresponding path program 590 times [2021-06-01 17:34:40,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:40,347 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921104829] [2021-06-01 17:34:40,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:40,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:40,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:40,422 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:40,422 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921104829] [2021-06-01 17:34:40,422 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921104829] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:40,422 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:40,422 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:40,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510648523] [2021-06-01 17:34:40,422 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:40,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:40,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:40,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:40,423 INFO L87 Difference]: Start difference. First operand 1445 states and 5728 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:40,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:40,492 INFO L93 Difference]: Finished difference Result 2774 states and 10408 transitions. [2021-06-01 17:34:40,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:40,492 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:40,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:40,497 INFO L225 Difference]: With dead ends: 2774 [2021-06-01 17:34:40,497 INFO L226 Difference]: Without dead ends: 2499 [2021-06-01 17:34:40,497 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:40,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2499 states. [2021-06-01 17:34:40,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2499 to 1417. [2021-06-01 17:34:40,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 1416 states have (on average 3.9745762711864407) internal successors, (5628), 1416 states have internal predecessors, (5628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:40,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 5628 transitions. [2021-06-01 17:34:40,526 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 5628 transitions. Word has length 25 [2021-06-01 17:34:40,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:40,526 INFO L482 AbstractCegarLoop]: Abstraction has 1417 states and 5628 transitions. [2021-06-01 17:34:40,526 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:40,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 5628 transitions. [2021-06-01 17:34:40,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:40,528 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:40,528 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:40,528 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable593 [2021-06-01 17:34:40,528 INFO L430 AbstractCegarLoop]: === Iteration 595 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:40,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:40,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1047132669, now seen corresponding path program 591 times [2021-06-01 17:34:40,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:40,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528459766] [2021-06-01 17:34:40,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:40,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:40,612 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:40,612 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528459766] [2021-06-01 17:34:40,612 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528459766] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:40,612 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:40,612 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:40,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996157179] [2021-06-01 17:34:40,612 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:40,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:40,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:40,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:40,613 INFO L87 Difference]: Start difference. First operand 1417 states and 5628 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:40,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:40,674 INFO L93 Difference]: Finished difference Result 2706 states and 10176 transitions. [2021-06-01 17:34:40,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:40,675 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:40,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:40,679 INFO L225 Difference]: With dead ends: 2706 [2021-06-01 17:34:40,679 INFO L226 Difference]: Without dead ends: 2421 [2021-06-01 17:34:40,680 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:40,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2021-06-01 17:34:40,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 1453. [2021-06-01 17:34:40,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1453 states, 1452 states have (on average 3.958677685950413) internal successors, (5748), 1452 states have internal predecessors, (5748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:40,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 5748 transitions. [2021-06-01 17:34:40,709 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 5748 transitions. Word has length 25 [2021-06-01 17:34:40,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:40,709 INFO L482 AbstractCegarLoop]: Abstraction has 1453 states and 5748 transitions. [2021-06-01 17:34:40,709 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:40,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 5748 transitions. [2021-06-01 17:34:40,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:40,711 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:40,711 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:40,711 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable594 [2021-06-01 17:34:40,711 INFO L430 AbstractCegarLoop]: === Iteration 596 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:40,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:40,711 INFO L82 PathProgramCache]: Analyzing trace with hash 121482651, now seen corresponding path program 592 times [2021-06-01 17:34:40,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:40,711 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697239146] [2021-06-01 17:34:40,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:40,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:40,796 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:40,796 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697239146] [2021-06-01 17:34:40,796 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697239146] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:40,796 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:40,796 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:40,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121379213] [2021-06-01 17:34:40,796 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:40,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:40,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:40,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:40,796 INFO L87 Difference]: Start difference. First operand 1453 states and 5748 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:40,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:40,862 INFO L93 Difference]: Finished difference Result 2492 states and 9434 transitions. [2021-06-01 17:34:40,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:40,863 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:40,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:40,867 INFO L225 Difference]: With dead ends: 2492 [2021-06-01 17:34:40,867 INFO L226 Difference]: Without dead ends: 2193 [2021-06-01 17:34:40,867 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:40,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2021-06-01 17:34:40,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 1417. [2021-06-01 17:34:40,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 1416 states have (on average 3.9661016949152543) internal successors, (5616), 1416 states have internal predecessors, (5616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:40,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 5616 transitions. [2021-06-01 17:34:40,895 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 5616 transitions. Word has length 25 [2021-06-01 17:34:40,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:40,895 INFO L482 AbstractCegarLoop]: Abstraction has 1417 states and 5616 transitions. [2021-06-01 17:34:40,895 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:40,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 5616 transitions. [2021-06-01 17:34:40,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:40,897 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:40,897 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:40,897 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable595 [2021-06-01 17:34:40,897 INFO L430 AbstractCegarLoop]: === Iteration 597 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:40,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:40,898 INFO L82 PathProgramCache]: Analyzing trace with hash -37866085, now seen corresponding path program 593 times [2021-06-01 17:34:40,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:40,898 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827259591] [2021-06-01 17:34:40,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:40,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:40,985 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:40,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827259591] [2021-06-01 17:34:40,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827259591] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:40,985 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:40,985 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:40,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809971801] [2021-06-01 17:34:40,986 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:40,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:40,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:40,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:40,986 INFO L87 Difference]: Start difference. First operand 1417 states and 5616 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:41,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:41,053 INFO L93 Difference]: Finished difference Result 2464 states and 9330 transitions. [2021-06-01 17:34:41,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:41,053 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:41,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:41,057 INFO L225 Difference]: With dead ends: 2464 [2021-06-01 17:34:41,057 INFO L226 Difference]: Without dead ends: 2217 [2021-06-01 17:34:41,057 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:41,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2217 states. [2021-06-01 17:34:41,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2217 to 1441. [2021-06-01 17:34:41,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1440 states have (on average 3.952777777777778) internal successors, (5692), 1440 states have internal predecessors, (5692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:41,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 5692 transitions. [2021-06-01 17:34:41,086 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 5692 transitions. Word has length 25 [2021-06-01 17:34:41,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:41,086 INFO L482 AbstractCegarLoop]: Abstraction has 1441 states and 5692 transitions. [2021-06-01 17:34:41,086 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:41,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 5692 transitions. [2021-06-01 17:34:41,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:41,088 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:41,088 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:41,088 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable596 [2021-06-01 17:34:41,088 INFO L430 AbstractCegarLoop]: === Iteration 598 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:41,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:41,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1043196541, now seen corresponding path program 594 times [2021-06-01 17:34:41,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:41,088 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155056828] [2021-06-01 17:34:41,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:41,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:41,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:41,163 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:41,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155056828] [2021-06-01 17:34:41,163 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155056828] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:41,163 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:41,163 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:41,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68979706] [2021-06-01 17:34:41,164 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:41,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:41,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:41,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:41,164 INFO L87 Difference]: Start difference. First operand 1441 states and 5692 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:41,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:41,226 INFO L93 Difference]: Finished difference Result 2216 states and 8477 transitions. [2021-06-01 17:34:41,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:41,226 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:41,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:41,230 INFO L225 Difference]: With dead ends: 2216 [2021-06-01 17:34:41,230 INFO L226 Difference]: Without dead ends: 1917 [2021-06-01 17:34:41,230 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:41,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2021-06-01 17:34:41,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 1405. [2021-06-01 17:34:41,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1405 states, 1404 states have (on average 3.972934472934473) internal successors, (5578), 1404 states have internal predecessors, (5578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:41,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1405 states to 1405 states and 5578 transitions. [2021-06-01 17:34:41,264 INFO L78 Accepts]: Start accepts. Automaton has 1405 states and 5578 transitions. Word has length 25 [2021-06-01 17:34:41,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:41,264 INFO L482 AbstractCegarLoop]: Abstraction has 1405 states and 5578 transitions. [2021-06-01 17:34:41,264 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:41,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1405 states and 5578 transitions. [2021-06-01 17:34:41,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:41,266 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:41,266 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:41,266 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable597 [2021-06-01 17:34:41,266 INFO L430 AbstractCegarLoop]: === Iteration 599 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:41,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:41,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1794536071, now seen corresponding path program 595 times [2021-06-01 17:34:41,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:41,266 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373149087] [2021-06-01 17:34:41,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:41,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:41,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:41,342 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:41,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373149087] [2021-06-01 17:34:41,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373149087] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:41,342 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:41,342 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:41,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723531248] [2021-06-01 17:34:41,342 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:41,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:41,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:41,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:41,343 INFO L87 Difference]: Start difference. First operand 1405 states and 5578 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:41,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:41,406 INFO L93 Difference]: Finished difference Result 2392 states and 9064 transitions. [2021-06-01 17:34:41,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:41,406 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:41,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:41,410 INFO L225 Difference]: With dead ends: 2392 [2021-06-01 17:34:41,410 INFO L226 Difference]: Without dead ends: 2109 [2021-06-01 17:34:41,411 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:41,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2109 states. [2021-06-01 17:34:41,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2109 to 1445. [2021-06-01 17:34:41,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1444 states have (on average 3.9626038781163433) internal successors, (5722), 1444 states have internal predecessors, (5722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:41,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 5722 transitions. [2021-06-01 17:34:41,441 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 5722 transitions. Word has length 25 [2021-06-01 17:34:41,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:41,441 INFO L482 AbstractCegarLoop]: Abstraction has 1445 states and 5722 transitions. [2021-06-01 17:34:41,441 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:41,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 5722 transitions. [2021-06-01 17:34:41,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:41,443 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:41,443 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:41,443 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable598 [2021-06-01 17:34:41,443 INFO L430 AbstractCegarLoop]: === Iteration 600 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:41,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:41,443 INFO L82 PathProgramCache]: Analyzing trace with hash -713473445, now seen corresponding path program 596 times [2021-06-01 17:34:41,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:41,443 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770626231] [2021-06-01 17:34:41,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:41,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:41,519 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:41,519 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770626231] [2021-06-01 17:34:41,519 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770626231] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:41,519 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:41,520 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:41,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425864138] [2021-06-01 17:34:41,520 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:41,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:41,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:41,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:41,520 INFO L87 Difference]: Start difference. First operand 1445 states and 5722 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:41,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:41,583 INFO L93 Difference]: Finished difference Result 2356 states and 8888 transitions. [2021-06-01 17:34:41,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:41,583 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:41,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:41,587 INFO L225 Difference]: With dead ends: 2356 [2021-06-01 17:34:41,587 INFO L226 Difference]: Without dead ends: 2081 [2021-06-01 17:34:41,587 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:41,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2081 states. [2021-06-01 17:34:41,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2081 to 1417. [2021-06-01 17:34:41,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 1416 states have (on average 3.9703389830508473) internal successors, (5622), 1416 states have internal predecessors, (5622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:41,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 5622 transitions. [2021-06-01 17:34:41,614 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 5622 transitions. Word has length 25 [2021-06-01 17:34:41,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:41,615 INFO L482 AbstractCegarLoop]: Abstraction has 1417 states and 5622 transitions. [2021-06-01 17:34:41,615 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:41,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 5622 transitions. [2021-06-01 17:34:41,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:41,616 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:41,616 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:41,616 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable599 [2021-06-01 17:34:41,617 INFO L430 AbstractCegarLoop]: === Iteration 601 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:41,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:41,617 INFO L82 PathProgramCache]: Analyzing trace with hash 2019529179, now seen corresponding path program 597 times [2021-06-01 17:34:41,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:41,617 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112283796] [2021-06-01 17:34:41,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:41,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:41,694 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:41,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112283796] [2021-06-01 17:34:41,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112283796] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:41,694 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:41,694 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:41,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249720243] [2021-06-01 17:34:41,694 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:41,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:41,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:41,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:41,695 INFO L87 Difference]: Start difference. First operand 1417 states and 5622 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:41,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:41,756 INFO L93 Difference]: Finished difference Result 2272 states and 8584 transitions. [2021-06-01 17:34:41,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:41,757 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:41,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:41,761 INFO L225 Difference]: With dead ends: 2272 [2021-06-01 17:34:41,761 INFO L226 Difference]: Without dead ends: 1989 [2021-06-01 17:34:41,761 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:41,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1989 states. [2021-06-01 17:34:41,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1989 to 1453. [2021-06-01 17:34:41,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1453 states, 1452 states have (on average 3.9545454545454546) internal successors, (5742), 1452 states have internal predecessors, (5742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:41,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 5742 transitions. [2021-06-01 17:34:41,788 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 5742 transitions. Word has length 25 [2021-06-01 17:34:41,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:41,788 INFO L482 AbstractCegarLoop]: Abstraction has 1453 states and 5742 transitions. [2021-06-01 17:34:41,788 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:41,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 5742 transitions. [2021-06-01 17:34:41,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:41,790 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:41,790 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:41,790 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable600 [2021-06-01 17:34:41,790 INFO L430 AbstractCegarLoop]: === Iteration 602 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:41,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:41,790 INFO L82 PathProgramCache]: Analyzing trace with hash 331282907, now seen corresponding path program 598 times [2021-06-01 17:34:41,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:41,790 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903247512] [2021-06-01 17:34:41,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:41,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:41,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:41,865 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:41,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903247512] [2021-06-01 17:34:41,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903247512] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:41,865 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:41,865 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:41,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79463890] [2021-06-01 17:34:41,865 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:41,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:41,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:41,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:41,865 INFO L87 Difference]: Start difference. First operand 1453 states and 5742 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:41,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:41,927 INFO L93 Difference]: Finished difference Result 2060 states and 7847 transitions. [2021-06-01 17:34:41,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:41,928 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:41,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:41,931 INFO L225 Difference]: With dead ends: 2060 [2021-06-01 17:34:41,931 INFO L226 Difference]: Without dead ends: 1761 [2021-06-01 17:34:41,931 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:41,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1761 states. [2021-06-01 17:34:41,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1761 to 1417. [2021-06-01 17:34:41,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 1416 states have (on average 3.961864406779661) internal successors, (5610), 1416 states have internal predecessors, (5610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:41,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 5610 transitions. [2021-06-01 17:34:41,957 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 5610 transitions. Word has length 25 [2021-06-01 17:34:41,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:41,957 INFO L482 AbstractCegarLoop]: Abstraction has 1417 states and 5610 transitions. [2021-06-01 17:34:41,957 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:41,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 5610 transitions. [2021-06-01 17:34:41,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:41,959 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:41,959 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:41,959 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable601 [2021-06-01 17:34:41,959 INFO L430 AbstractCegarLoop]: === Iteration 603 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:41,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:41,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1887433155, now seen corresponding path program 599 times [2021-06-01 17:34:41,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:41,959 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26726620] [2021-06-01 17:34:41,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:42,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:42,035 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:42,035 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26726620] [2021-06-01 17:34:42,035 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26726620] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:42,035 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:42,035 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:42,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265370285] [2021-06-01 17:34:42,035 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:42,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:42,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:42,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:42,036 INFO L87 Difference]: Start difference. First operand 1417 states and 5610 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:42,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:42,089 INFO L93 Difference]: Finished difference Result 1952 states and 7439 transitions. [2021-06-01 17:34:42,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:42,089 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:42,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:42,093 INFO L225 Difference]: With dead ends: 1952 [2021-06-01 17:34:42,093 INFO L226 Difference]: Without dead ends: 1705 [2021-06-01 17:34:42,093 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:42,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2021-06-01 17:34:42,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1441. [2021-06-01 17:34:42,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1441 states, 1440 states have (on average 3.948611111111111) internal successors, (5686), 1440 states have internal predecessors, (5686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:42,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1441 states to 1441 states and 5686 transitions. [2021-06-01 17:34:42,118 INFO L78 Accepts]: Start accepts. Automaton has 1441 states and 5686 transitions. Word has length 25 [2021-06-01 17:34:42,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:42,118 INFO L482 AbstractCegarLoop]: Abstraction has 1441 states and 5686 transitions. [2021-06-01 17:34:42,118 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:42,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1441 states and 5686 transitions. [2021-06-01 17:34:42,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:42,120 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:42,120 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:42,120 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable602 [2021-06-01 17:34:42,120 INFO L430 AbstractCegarLoop]: === Iteration 604 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:42,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:42,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1560737179, now seen corresponding path program 600 times [2021-06-01 17:34:42,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:42,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457132003] [2021-06-01 17:34:42,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:42,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:42,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:42,196 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:42,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457132003] [2021-06-01 17:34:42,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457132003] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:42,196 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:42,196 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:42,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697785000] [2021-06-01 17:34:42,196 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:42,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:42,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:42,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:42,196 INFO L87 Difference]: Start difference. First operand 1441 states and 5686 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:42,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:42,247 INFO L93 Difference]: Finished difference Result 1704 states and 6586 transitions. [2021-06-01 17:34:42,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:42,248 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:42,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:42,250 INFO L225 Difference]: With dead ends: 1704 [2021-06-01 17:34:42,250 INFO L226 Difference]: Without dead ends: 1397 [2021-06-01 17:34:42,251 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:42,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1397 states. [2021-06-01 17:34:42,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1397 to 1397. [2021-06-01 17:34:42,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 1396 states have (on average 3.9835243553008595) internal successors, (5561), 1396 states have internal predecessors, (5561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:42,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 5561 transitions. [2021-06-01 17:34:42,274 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 5561 transitions. Word has length 25 [2021-06-01 17:34:42,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:42,274 INFO L482 AbstractCegarLoop]: Abstraction has 1397 states and 5561 transitions. [2021-06-01 17:34:42,274 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:42,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 5561 transitions. [2021-06-01 17:34:42,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:42,276 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:42,276 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:42,276 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable603 [2021-06-01 17:34:42,276 INFO L430 AbstractCegarLoop]: === Iteration 605 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:42,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:42,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1731112383, now seen corresponding path program 601 times [2021-06-01 17:34:42,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:42,276 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830053384] [2021-06-01 17:34:42,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:42,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:42,351 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:42,351 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830053384] [2021-06-01 17:34:42,351 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830053384] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:42,351 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:42,351 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:42,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128874516] [2021-06-01 17:34:42,352 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:42,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:42,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:42,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:42,352 INFO L87 Difference]: Start difference. First operand 1397 states and 5561 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:42,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:42,411 INFO L93 Difference]: Finished difference Result 2848 states and 10734 transitions. [2021-06-01 17:34:42,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:42,412 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:42,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:42,417 INFO L225 Difference]: With dead ends: 2848 [2021-06-01 17:34:42,417 INFO L226 Difference]: Without dead ends: 2563 [2021-06-01 17:34:42,417 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:42,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2563 states. [2021-06-01 17:34:42,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2563 to 1457. [2021-06-01 17:34:42,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1457 states, 1456 states have (on average 3.9690934065934065) internal successors, (5779), 1456 states have internal predecessors, (5779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:42,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 5779 transitions. [2021-06-01 17:34:42,448 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 5779 transitions. Word has length 25 [2021-06-01 17:34:42,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:42,448 INFO L482 AbstractCegarLoop]: Abstraction has 1457 states and 5779 transitions. [2021-06-01 17:34:42,448 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:42,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 5779 transitions. [2021-06-01 17:34:42,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:42,450 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:42,450 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:42,450 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable604 [2021-06-01 17:34:42,450 INFO L430 AbstractCegarLoop]: === Iteration 606 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:42,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:42,450 INFO L82 PathProgramCache]: Analyzing trace with hash 520517919, now seen corresponding path program 602 times [2021-06-01 17:34:42,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:42,451 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348036286] [2021-06-01 17:34:42,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:42,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:42,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:42,527 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:42,527 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348036286] [2021-06-01 17:34:42,527 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348036286] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:42,527 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:42,527 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:42,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157360738] [2021-06-01 17:34:42,527 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:42,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:42,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:42,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:42,528 INFO L87 Difference]: Start difference. First operand 1457 states and 5779 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:42,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:42,586 INFO L93 Difference]: Finished difference Result 2846 states and 10683 transitions. [2021-06-01 17:34:42,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:42,586 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:42,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:42,591 INFO L225 Difference]: With dead ends: 2846 [2021-06-01 17:34:42,591 INFO L226 Difference]: Without dead ends: 2517 [2021-06-01 17:34:42,591 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:42,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2517 states. [2021-06-01 17:34:42,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2517 to 1411. [2021-06-01 17:34:42,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1410 states have (on average 3.9801418439716314) internal successors, (5612), 1410 states have internal predecessors, (5612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:42,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 5612 transitions. [2021-06-01 17:34:42,621 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 5612 transitions. Word has length 25 [2021-06-01 17:34:42,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:42,621 INFO L482 AbstractCegarLoop]: Abstraction has 1411 states and 5612 transitions. [2021-06-01 17:34:42,621 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:42,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 5612 transitions. [2021-06-01 17:34:42,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:42,623 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:42,623 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:42,623 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable605 [2021-06-01 17:34:42,623 INFO L430 AbstractCegarLoop]: === Iteration 607 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:42,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:42,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1717057951, now seen corresponding path program 603 times [2021-06-01 17:34:42,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:42,623 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299742870] [2021-06-01 17:34:42,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:42,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:42,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:42,698 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:42,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299742870] [2021-06-01 17:34:42,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299742870] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:42,698 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:42,698 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:42,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387022882] [2021-06-01 17:34:42,698 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:42,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:42,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:42,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:42,698 INFO L87 Difference]: Start difference. First operand 1411 states and 5612 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:42,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:42,757 INFO L93 Difference]: Finished difference Result 2794 states and 10489 transitions. [2021-06-01 17:34:42,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:42,758 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:42,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:42,763 INFO L225 Difference]: With dead ends: 2794 [2021-06-01 17:34:42,763 INFO L226 Difference]: Without dead ends: 2509 [2021-06-01 17:34:42,763 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:42,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2509 states. [2021-06-01 17:34:42,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2509 to 1439. [2021-06-01 17:34:42,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1439 states, 1438 states have (on average 3.963838664812239) internal successors, (5700), 1438 states have internal predecessors, (5700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:42,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 5700 transitions. [2021-06-01 17:34:42,793 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 5700 transitions. Word has length 25 [2021-06-01 17:34:42,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:42,793 INFO L482 AbstractCegarLoop]: Abstraction has 1439 states and 5700 transitions. [2021-06-01 17:34:42,793 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:42,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 5700 transitions. [2021-06-01 17:34:42,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:42,795 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:42,795 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:42,795 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable606 [2021-06-01 17:34:42,795 INFO L430 AbstractCegarLoop]: === Iteration 608 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:42,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:42,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1385442913, now seen corresponding path program 604 times [2021-06-01 17:34:42,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:42,795 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543349962] [2021-06-01 17:34:42,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:42,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:42,870 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:42,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543349962] [2021-06-01 17:34:42,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543349962] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:42,870 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:42,870 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:42,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249197020] [2021-06-01 17:34:42,870 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:42,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:42,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:42,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:42,870 INFO L87 Difference]: Start difference. First operand 1439 states and 5700 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:42,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:42,929 INFO L93 Difference]: Finished difference Result 2756 states and 10308 transitions. [2021-06-01 17:34:42,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:42,930 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:42,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:42,935 INFO L225 Difference]: With dead ends: 2756 [2021-06-01 17:34:42,935 INFO L226 Difference]: Without dead ends: 2481 [2021-06-01 17:34:42,935 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:42,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2481 states. [2021-06-01 17:34:42,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2481 to 1411. [2021-06-01 17:34:42,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1410 states have (on average 3.970212765957447) internal successors, (5598), 1410 states have internal predecessors, (5598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:42,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 5598 transitions. [2021-06-01 17:34:42,966 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 5598 transitions. Word has length 25 [2021-06-01 17:34:42,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:42,966 INFO L482 AbstractCegarLoop]: Abstraction has 1411 states and 5598 transitions. [2021-06-01 17:34:42,966 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:42,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 5598 transitions. [2021-06-01 17:34:42,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:42,968 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:42,968 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:42,968 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable607 [2021-06-01 17:34:42,968 INFO L430 AbstractCegarLoop]: === Iteration 609 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:42,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:42,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1595561731, now seen corresponding path program 605 times [2021-06-01 17:34:42,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:42,969 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939389062] [2021-06-01 17:34:42,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:43,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:43,045 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:43,045 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939389062] [2021-06-01 17:34:43,045 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939389062] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:43,045 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:43,045 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:43,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674299234] [2021-06-01 17:34:43,045 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:43,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:43,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:43,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:43,046 INFO L87 Difference]: Start difference. First operand 1411 states and 5598 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:43,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:43,102 INFO L93 Difference]: Finished difference Result 2790 states and 10465 transitions. [2021-06-01 17:34:43,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:43,102 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:43,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:43,107 INFO L225 Difference]: With dead ends: 2790 [2021-06-01 17:34:43,107 INFO L226 Difference]: Without dead ends: 2507 [2021-06-01 17:34:43,107 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:43,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2021-06-01 17:34:43,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 1439. [2021-06-01 17:34:43,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1439 states, 1438 states have (on average 3.9541029207232268) internal successors, (5686), 1438 states have internal predecessors, (5686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:43,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 5686 transitions. [2021-06-01 17:34:43,137 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 5686 transitions. Word has length 25 [2021-06-01 17:34:43,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:43,138 INFO L482 AbstractCegarLoop]: Abstraction has 1439 states and 5686 transitions. [2021-06-01 17:34:43,138 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:43,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 5686 transitions. [2021-06-01 17:34:43,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:43,139 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:43,139 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:43,139 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable608 [2021-06-01 17:34:43,140 INFO L430 AbstractCegarLoop]: === Iteration 610 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:43,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:43,140 INFO L82 PathProgramCache]: Analyzing trace with hash -514499105, now seen corresponding path program 606 times [2021-06-01 17:34:43,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:43,140 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973198218] [2021-06-01 17:34:43,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:43,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:43,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:43,215 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:43,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973198218] [2021-06-01 17:34:43,215 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973198218] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:43,215 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:43,216 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:43,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228451542] [2021-06-01 17:34:43,216 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:43,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:43,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:43,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:43,216 INFO L87 Difference]: Start difference. First operand 1439 states and 5686 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:43,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:43,273 INFO L93 Difference]: Finished difference Result 2754 states and 10289 transitions. [2021-06-01 17:34:43,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:43,273 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:43,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:43,278 INFO L225 Difference]: With dead ends: 2754 [2021-06-01 17:34:43,278 INFO L226 Difference]: Without dead ends: 2465 [2021-06-01 17:34:43,278 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:43,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2465 states. [2021-06-01 17:34:43,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2465 to 1397. [2021-06-01 17:34:43,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 1396 states have (on average 3.9792263610315186) internal successors, (5555), 1396 states have internal predecessors, (5555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:43,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 5555 transitions. [2021-06-01 17:34:43,307 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 5555 transitions. Word has length 25 [2021-06-01 17:34:43,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:43,308 INFO L482 AbstractCegarLoop]: Abstraction has 1397 states and 5555 transitions. [2021-06-01 17:34:43,308 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:43,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 5555 transitions. [2021-06-01 17:34:43,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:43,309 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:43,309 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:43,309 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable609 [2021-06-01 17:34:43,310 INFO L430 AbstractCegarLoop]: === Iteration 611 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:43,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:43,310 INFO L82 PathProgramCache]: Analyzing trace with hash 540793375, now seen corresponding path program 607 times [2021-06-01 17:34:43,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:43,310 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782661717] [2021-06-01 17:34:43,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:43,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:43,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:43,385 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:43,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782661717] [2021-06-01 17:34:43,386 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782661717] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:43,386 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:43,386 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:43,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115359051] [2021-06-01 17:34:43,386 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:43,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:43,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:43,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:43,386 INFO L87 Difference]: Start difference. First operand 1397 states and 5555 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:43,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:43,453 INFO L93 Difference]: Finished difference Result 2884 states and 10902 transitions. [2021-06-01 17:34:43,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:43,454 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:43,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:43,459 INFO L225 Difference]: With dead ends: 2884 [2021-06-01 17:34:43,459 INFO L226 Difference]: Without dead ends: 2599 [2021-06-01 17:34:43,459 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:43,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2599 states. [2021-06-01 17:34:43,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2599 to 1461. [2021-06-01 17:34:43,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 1460 states have (on average 3.969178082191781) internal successors, (5795), 1460 states have internal predecessors, (5795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:43,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 5795 transitions. [2021-06-01 17:34:43,490 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 5795 transitions. Word has length 25 [2021-06-01 17:34:43,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:43,490 INFO L482 AbstractCegarLoop]: Abstraction has 1461 states and 5795 transitions. [2021-06-01 17:34:43,490 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:43,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 5795 transitions. [2021-06-01 17:34:43,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:43,492 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:43,492 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:43,492 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable610 [2021-06-01 17:34:43,492 INFO L430 AbstractCegarLoop]: === Iteration 612 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:43,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:43,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1502543619, now seen corresponding path program 608 times [2021-06-01 17:34:43,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:43,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113768881] [2021-06-01 17:34:43,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:43,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:43,568 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:43,568 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113768881] [2021-06-01 17:34:43,568 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113768881] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:43,568 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:43,568 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:43,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644734473] [2021-06-01 17:34:43,569 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:43,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:43,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:43,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:43,569 INFO L87 Difference]: Start difference. First operand 1461 states and 5795 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:43,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:43,626 INFO L93 Difference]: Finished difference Result 2882 states and 10851 transitions. [2021-06-01 17:34:43,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:43,627 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:43,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:43,631 INFO L225 Difference]: With dead ends: 2882 [2021-06-01 17:34:43,632 INFO L226 Difference]: Without dead ends: 2553 [2021-06-01 17:34:43,632 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:43,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2553 states. [2021-06-01 17:34:43,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2553 to 1415. [2021-06-01 17:34:43,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1415 states, 1414 states have (on average 3.9773691654879775) internal successors, (5624), 1414 states have internal predecessors, (5624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:43,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 5624 transitions. [2021-06-01 17:34:43,662 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 5624 transitions. Word has length 25 [2021-06-01 17:34:43,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:43,662 INFO L482 AbstractCegarLoop]: Abstraction has 1415 states and 5624 transitions. [2021-06-01 17:34:43,662 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:43,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 5624 transitions. [2021-06-01 17:34:43,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:43,664 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:43,664 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:43,664 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable611 [2021-06-01 17:34:43,664 INFO L430 AbstractCegarLoop]: === Iteration 613 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:43,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:43,664 INFO L82 PathProgramCache]: Analyzing trace with hash -255233505, now seen corresponding path program 609 times [2021-06-01 17:34:43,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:43,664 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975973010] [2021-06-01 17:34:43,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:43,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:43,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:43,748 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:43,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975973010] [2021-06-01 17:34:43,748 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975973010] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:43,748 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:43,748 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:43,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530447796] [2021-06-01 17:34:43,748 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:43,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:43,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:43,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:43,748 INFO L87 Difference]: Start difference. First operand 1415 states and 5624 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:43,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:43,807 INFO L93 Difference]: Finished difference Result 2854 states and 10765 transitions. [2021-06-01 17:34:43,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:43,808 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:43,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:43,812 INFO L225 Difference]: With dead ends: 2854 [2021-06-01 17:34:43,813 INFO L226 Difference]: Without dead ends: 2569 [2021-06-01 17:34:43,813 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:43,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2569 states. [2021-06-01 17:34:43,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2569 to 1451. [2021-06-01 17:34:43,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1451 states, 1450 states have (on average 3.9613793103448276) internal successors, (5744), 1450 states have internal predecessors, (5744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:43,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 5744 transitions. [2021-06-01 17:34:43,843 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 5744 transitions. Word has length 25 [2021-06-01 17:34:43,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:43,843 INFO L482 AbstractCegarLoop]: Abstraction has 1451 states and 5744 transitions. [2021-06-01 17:34:43,843 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:43,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 5744 transitions. [2021-06-01 17:34:43,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:43,845 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:43,845 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:43,845 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable612 [2021-06-01 17:34:43,845 INFO L430 AbstractCegarLoop]: === Iteration 614 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:43,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:43,845 INFO L82 PathProgramCache]: Analyzing trace with hash 300554783, now seen corresponding path program 610 times [2021-06-01 17:34:43,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:43,846 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486515350] [2021-06-01 17:34:43,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:43,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:43,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:43,929 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:43,929 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486515350] [2021-06-01 17:34:43,929 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486515350] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:43,929 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:43,929 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:43,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810773470] [2021-06-01 17:34:43,929 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:43,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:43,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:43,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:43,929 INFO L87 Difference]: Start difference. First operand 1451 states and 5744 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:43,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:43,989 INFO L93 Difference]: Finished difference Result 2832 states and 10648 transitions. [2021-06-01 17:34:43,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:43,989 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:43,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:43,994 INFO L225 Difference]: With dead ends: 2832 [2021-06-01 17:34:43,994 INFO L226 Difference]: Without dead ends: 2533 [2021-06-01 17:34:43,994 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:44,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2533 states. [2021-06-01 17:34:44,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2533 to 1415. [2021-06-01 17:34:44,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1415 states, 1414 states have (on average 3.9646393210749644) internal successors, (5606), 1414 states have internal predecessors, (5606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:44,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 5606 transitions. [2021-06-01 17:34:44,024 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 5606 transitions. Word has length 25 [2021-06-01 17:34:44,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:44,024 INFO L482 AbstractCegarLoop]: Abstraction has 1415 states and 5606 transitions. [2021-06-01 17:34:44,024 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:44,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 5606 transitions. [2021-06-01 17:34:44,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:44,026 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:44,026 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:44,026 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable613 [2021-06-01 17:34:44,026 INFO L430 AbstractCegarLoop]: === Iteration 615 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:44,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:44,026 INFO L82 PathProgramCache]: Analyzing trace with hash 727114109, now seen corresponding path program 611 times [2021-06-01 17:34:44,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:44,026 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471846988] [2021-06-01 17:34:44,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:44,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:44,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:44,103 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:44,103 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471846988] [2021-06-01 17:34:44,103 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471846988] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:44,104 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:44,104 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:44,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541023804] [2021-06-01 17:34:44,104 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:44,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:44,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:44,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:44,104 INFO L87 Difference]: Start difference. First operand 1415 states and 5606 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:44,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:44,162 INFO L93 Difference]: Finished difference Result 2850 states and 10737 transitions. [2021-06-01 17:34:44,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:44,163 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:44,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:44,167 INFO L225 Difference]: With dead ends: 2850 [2021-06-01 17:34:44,168 INFO L226 Difference]: Without dead ends: 2567 [2021-06-01 17:34:44,168 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:44,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2021-06-01 17:34:44,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 1451. [2021-06-01 17:34:44,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1451 states, 1450 states have (on average 3.9489655172413793) internal successors, (5726), 1450 states have internal predecessors, (5726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:44,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 5726 transitions. [2021-06-01 17:34:44,199 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 5726 transitions. Word has length 25 [2021-06-01 17:34:44,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:44,199 INFO L482 AbstractCegarLoop]: Abstraction has 1451 states and 5726 transitions. [2021-06-01 17:34:44,199 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:44,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 5726 transitions. [2021-06-01 17:34:44,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:44,201 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:44,201 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:44,201 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable614 [2021-06-01 17:34:44,201 INFO L430 AbstractCegarLoop]: === Iteration 616 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:44,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:44,201 INFO L82 PathProgramCache]: Analyzing trace with hash 520306143, now seen corresponding path program 612 times [2021-06-01 17:34:44,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:44,201 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180868127] [2021-06-01 17:34:44,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:44,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:44,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:44,280 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:44,281 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180868127] [2021-06-01 17:34:44,281 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180868127] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:44,281 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:44,281 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:44,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82692177] [2021-06-01 17:34:44,281 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:44,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:44,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:44,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:44,281 INFO L87 Difference]: Start difference. First operand 1451 states and 5726 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:44,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:44,346 INFO L93 Difference]: Finished difference Result 2830 states and 10625 transitions. [2021-06-01 17:34:44,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:44,346 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:44,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:44,351 INFO L225 Difference]: With dead ends: 2830 [2021-06-01 17:34:44,351 INFO L226 Difference]: Without dead ends: 2513 [2021-06-01 17:34:44,351 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:44,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2513 states. [2021-06-01 17:34:44,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2513 to 1397. [2021-06-01 17:34:44,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 1396 states have (on average 3.9749283667621778) internal successors, (5549), 1396 states have internal predecessors, (5549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:44,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 5549 transitions. [2021-06-01 17:34:44,381 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 5549 transitions. Word has length 25 [2021-06-01 17:34:44,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:44,381 INFO L482 AbstractCegarLoop]: Abstraction has 1397 states and 5549 transitions. [2021-06-01 17:34:44,381 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:44,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 5549 transitions. [2021-06-01 17:34:44,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:44,383 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:44,383 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:44,383 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable615 [2021-06-01 17:34:44,383 INFO L430 AbstractCegarLoop]: === Iteration 617 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:44,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:44,383 INFO L82 PathProgramCache]: Analyzing trace with hash -315954691, now seen corresponding path program 613 times [2021-06-01 17:34:44,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:44,383 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979425560] [2021-06-01 17:34:44,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:44,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:44,457 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:44,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979425560] [2021-06-01 17:34:44,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979425560] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:44,457 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:44,457 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:44,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252389932] [2021-06-01 17:34:44,457 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:44,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:44,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:44,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:44,457 INFO L87 Difference]: Start difference. First operand 1397 states and 5549 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:44,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:44,515 INFO L93 Difference]: Finished difference Result 2758 states and 10347 transitions. [2021-06-01 17:34:44,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:44,515 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:44,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:44,520 INFO L225 Difference]: With dead ends: 2758 [2021-06-01 17:34:44,520 INFO L226 Difference]: Without dead ends: 2473 [2021-06-01 17:34:44,520 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:44,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2021-06-01 17:34:44,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 1437. [2021-06-01 17:34:44,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1436 states have (on average 3.964484679665738) internal successors, (5693), 1436 states have internal predecessors, (5693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:44,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 5693 transitions. [2021-06-01 17:34:44,551 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 5693 transitions. Word has length 25 [2021-06-01 17:34:44,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:44,551 INFO L482 AbstractCegarLoop]: Abstraction has 1437 states and 5693 transitions. [2021-06-01 17:34:44,551 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:44,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 5693 transitions. [2021-06-01 17:34:44,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:44,553 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:44,553 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:44,553 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable616 [2021-06-01 17:34:44,553 INFO L430 AbstractCegarLoop]: === Iteration 618 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:44,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:44,553 INFO L82 PathProgramCache]: Analyzing trace with hash 876511741, now seen corresponding path program 614 times [2021-06-01 17:34:44,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:44,553 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505444568] [2021-06-01 17:34:44,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:44,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:44,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:44,628 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:44,628 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505444568] [2021-06-01 17:34:44,628 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505444568] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:44,628 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:44,628 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:44,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490642013] [2021-06-01 17:34:44,628 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:44,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:44,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:44,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:44,629 INFO L87 Difference]: Start difference. First operand 1437 states and 5693 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:44,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:44,692 INFO L93 Difference]: Finished difference Result 2720 states and 10166 transitions. [2021-06-01 17:34:44,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:44,692 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:44,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:44,697 INFO L225 Difference]: With dead ends: 2720 [2021-06-01 17:34:44,697 INFO L226 Difference]: Without dead ends: 2445 [2021-06-01 17:34:44,697 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:44,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2445 states. [2021-06-01 17:34:44,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2445 to 1409. [2021-06-01 17:34:44,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1409 states, 1408 states have (on average 3.9723011363636362) internal successors, (5593), 1408 states have internal predecessors, (5593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:44,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1409 states to 1409 states and 5593 transitions. [2021-06-01 17:34:44,727 INFO L78 Accepts]: Start accepts. Automaton has 1409 states and 5593 transitions. Word has length 25 [2021-06-01 17:34:44,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:44,727 INFO L482 AbstractCegarLoop]: Abstraction has 1409 states and 5593 transitions. [2021-06-01 17:34:44,727 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:44,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1409 states and 5593 transitions. [2021-06-01 17:34:44,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:44,729 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:44,729 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:44,729 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable617 [2021-06-01 17:34:44,729 INFO L430 AbstractCegarLoop]: === Iteration 619 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:44,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:44,730 INFO L82 PathProgramCache]: Analyzing trace with hash -796856737, now seen corresponding path program 615 times [2021-06-01 17:34:44,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:44,730 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590856661] [2021-06-01 17:34:44,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:44,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:44,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:44,818 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:44,818 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590856661] [2021-06-01 17:34:44,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590856661] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:44,818 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:44,818 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:44,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320741331] [2021-06-01 17:34:44,819 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:44,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:44,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:44,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:44,819 INFO L87 Difference]: Start difference. First operand 1409 states and 5593 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:44,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:44,877 INFO L93 Difference]: Finished difference Result 2782 states and 10447 transitions. [2021-06-01 17:34:44,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:44,877 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:44,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:44,882 INFO L225 Difference]: With dead ends: 2782 [2021-06-01 17:34:44,882 INFO L226 Difference]: Without dead ends: 2497 [2021-06-01 17:34:44,882 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:44,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2497 states. [2021-06-01 17:34:44,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2497 to 1445. [2021-06-01 17:34:44,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1444 states have (on average 3.956371191135734) internal successors, (5713), 1444 states have internal predecessors, (5713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:44,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 5713 transitions. [2021-06-01 17:34:44,912 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 5713 transitions. Word has length 25 [2021-06-01 17:34:44,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:44,912 INFO L482 AbstractCegarLoop]: Abstraction has 1445 states and 5713 transitions. [2021-06-01 17:34:44,912 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:44,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 5713 transitions. [2021-06-01 17:34:44,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:44,914 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:44,914 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:44,914 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable618 [2021-06-01 17:34:44,914 INFO L430 AbstractCegarLoop]: === Iteration 620 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:44,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:44,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1722506755, now seen corresponding path program 616 times [2021-06-01 17:34:44,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:44,914 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022994596] [2021-06-01 17:34:44,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:44,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:44,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:44,998 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:44,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022994596] [2021-06-01 17:34:44,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022994596] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:44,998 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:44,998 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:44,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777830243] [2021-06-01 17:34:44,998 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:44,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:44,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:44,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:44,999 INFO L87 Difference]: Start difference. First operand 1445 states and 5713 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:45,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:45,058 INFO L93 Difference]: Finished difference Result 2760 states and 10330 transitions. [2021-06-01 17:34:45,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:45,059 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:45,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:45,063 INFO L225 Difference]: With dead ends: 2760 [2021-06-01 17:34:45,063 INFO L226 Difference]: Without dead ends: 2461 [2021-06-01 17:34:45,064 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:45,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2461 states. [2021-06-01 17:34:45,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2461 to 1409. [2021-06-01 17:34:45,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1409 states, 1408 states have (on average 3.963778409090909) internal successors, (5581), 1408 states have internal predecessors, (5581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:45,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1409 states to 1409 states and 5581 transitions. [2021-06-01 17:34:45,093 INFO L78 Accepts]: Start accepts. Automaton has 1409 states and 5581 transitions. Word has length 25 [2021-06-01 17:34:45,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:45,093 INFO L482 AbstractCegarLoop]: Abstraction has 1409 states and 5581 transitions. [2021-06-01 17:34:45,093 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:45,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1409 states and 5581 transitions. [2021-06-01 17:34:45,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:45,095 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:45,095 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:45,095 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable619 [2021-06-01 17:34:45,095 INFO L430 AbstractCegarLoop]: === Iteration 621 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:45,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:45,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1881855491, now seen corresponding path program 617 times [2021-06-01 17:34:45,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:45,096 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5125215] [2021-06-01 17:34:45,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:45,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:45,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:45,171 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:45,171 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5125215] [2021-06-01 17:34:45,171 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5125215] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:45,171 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:45,171 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:45,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955593914] [2021-06-01 17:34:45,172 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:45,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:45,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:45,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:45,172 INFO L87 Difference]: Start difference. First operand 1409 states and 5581 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:45,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:45,230 INFO L93 Difference]: Finished difference Result 2694 states and 10073 transitions. [2021-06-01 17:34:45,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:45,230 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:45,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:45,235 INFO L225 Difference]: With dead ends: 2694 [2021-06-01 17:34:45,235 INFO L226 Difference]: Without dead ends: 2447 [2021-06-01 17:34:45,235 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:45,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2447 states. [2021-06-01 17:34:45,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2447 to 1433. [2021-06-01 17:34:45,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1433 states, 1432 states have (on average 3.9504189944134076) internal successors, (5657), 1432 states have internal predecessors, (5657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:45,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 5657 transitions. [2021-06-01 17:34:45,264 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 5657 transitions. Word has length 25 [2021-06-01 17:34:45,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:45,264 INFO L482 AbstractCegarLoop]: Abstraction has 1433 states and 5657 transitions. [2021-06-01 17:34:45,264 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:45,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 5657 transitions. [2021-06-01 17:34:45,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:45,266 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:45,266 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:45,266 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable620 [2021-06-01 17:34:45,266 INFO L430 AbstractCegarLoop]: === Iteration 622 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:45,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:45,266 INFO L82 PathProgramCache]: Analyzing trace with hash -800792865, now seen corresponding path program 618 times [2021-06-01 17:34:45,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:45,267 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833621385] [2021-06-01 17:34:45,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:45,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:45,341 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:45,341 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833621385] [2021-06-01 17:34:45,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833621385] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:45,341 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:45,341 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:45,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328565169] [2021-06-01 17:34:45,341 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:45,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:45,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:45,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:45,341 INFO L87 Difference]: Start difference. First operand 1433 states and 5657 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:45,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:45,406 INFO L93 Difference]: Finished difference Result 2710 states and 10121 transitions. [2021-06-01 17:34:45,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:45,407 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:45,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:45,411 INFO L225 Difference]: With dead ends: 2710 [2021-06-01 17:34:45,411 INFO L226 Difference]: Without dead ends: 2411 [2021-06-01 17:34:45,412 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:45,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2411 states. [2021-06-01 17:34:45,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2411 to 1397. [2021-06-01 17:34:45,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 1396 states have (on average 3.9706303724928365) internal successors, (5543), 1396 states have internal predecessors, (5543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:45,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 5543 transitions. [2021-06-01 17:34:45,440 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 5543 transitions. Word has length 25 [2021-06-01 17:34:45,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:45,440 INFO L482 AbstractCegarLoop]: Abstraction has 1397 states and 5543 transitions. [2021-06-01 17:34:45,440 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:45,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 5543 transitions. [2021-06-01 17:34:45,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:45,442 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:45,442 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:45,442 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable621 [2021-06-01 17:34:45,442 INFO L430 AbstractCegarLoop]: === Iteration 623 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:45,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:45,442 INFO L82 PathProgramCache]: Analyzing trace with hash 656441819, now seen corresponding path program 619 times [2021-06-01 17:34:45,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:45,442 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800819497] [2021-06-01 17:34:45,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:45,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:45,517 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:45,517 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800819497] [2021-06-01 17:34:45,517 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800819497] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:45,517 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:45,517 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:45,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461703939] [2021-06-01 17:34:45,517 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:45,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:45,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:45,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:45,518 INFO L87 Difference]: Start difference. First operand 1397 states and 5543 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:45,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:45,574 INFO L93 Difference]: Finished difference Result 2752 states and 10326 transitions. [2021-06-01 17:34:45,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:45,574 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:45,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:45,579 INFO L225 Difference]: With dead ends: 2752 [2021-06-01 17:34:45,579 INFO L226 Difference]: Without dead ends: 2469 [2021-06-01 17:34:45,579 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:45,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2469 states. [2021-06-01 17:34:45,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2469 to 1437. [2021-06-01 17:34:45,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1436 states have (on average 3.9603064066852367) internal successors, (5687), 1436 states have internal predecessors, (5687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:45,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 5687 transitions. [2021-06-01 17:34:45,608 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 5687 transitions. Word has length 25 [2021-06-01 17:34:45,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:45,608 INFO L482 AbstractCegarLoop]: Abstraction has 1437 states and 5687 transitions. [2021-06-01 17:34:45,609 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:45,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 5687 transitions. [2021-06-01 17:34:45,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:45,610 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:45,610 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:45,610 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable622 [2021-06-01 17:34:45,610 INFO L430 AbstractCegarLoop]: === Iteration 624 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:45,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:45,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1737504445, now seen corresponding path program 620 times [2021-06-01 17:34:45,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:45,611 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200049866] [2021-06-01 17:34:45,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:45,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:45,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:45,687 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:45,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200049866] [2021-06-01 17:34:45,687 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200049866] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:45,687 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:45,688 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:45,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610684429] [2021-06-01 17:34:45,688 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:45,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:45,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:45,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:45,688 INFO L87 Difference]: Start difference. First operand 1437 states and 5687 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:45,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:45,745 INFO L93 Difference]: Finished difference Result 2716 states and 10150 transitions. [2021-06-01 17:34:45,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:45,745 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:45,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:45,750 INFO L225 Difference]: With dead ends: 2716 [2021-06-01 17:34:45,750 INFO L226 Difference]: Without dead ends: 2441 [2021-06-01 17:34:45,750 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:45,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2441 states. [2021-06-01 17:34:45,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2441 to 1409. [2021-06-01 17:34:45,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1409 states, 1408 states have (on average 3.968039772727273) internal successors, (5587), 1408 states have internal predecessors, (5587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:45,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1409 states to 1409 states and 5587 transitions. [2021-06-01 17:34:45,779 INFO L78 Accepts]: Start accepts. Automaton has 1409 states and 5587 transitions. Word has length 25 [2021-06-01 17:34:45,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:45,779 INFO L482 AbstractCegarLoop]: Abstraction has 1409 states and 5587 transitions. [2021-06-01 17:34:45,779 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:45,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1409 states and 5587 transitions. [2021-06-01 17:34:45,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:45,781 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:45,781 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:45,781 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable623 [2021-06-01 17:34:45,781 INFO L430 AbstractCegarLoop]: === Iteration 625 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:45,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:45,781 INFO L82 PathProgramCache]: Analyzing trace with hash 175539773, now seen corresponding path program 621 times [2021-06-01 17:34:45,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:45,781 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103794479] [2021-06-01 17:34:45,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:45,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:45,856 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:45,856 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103794479] [2021-06-01 17:34:45,856 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103794479] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:45,856 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:45,856 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:45,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761727237] [2021-06-01 17:34:45,857 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:45,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:45,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:45,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:45,857 INFO L87 Difference]: Start difference. First operand 1409 states and 5587 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:45,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:45,930 INFO L93 Difference]: Finished difference Result 2776 states and 10426 transitions. [2021-06-01 17:34:45,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:45,931 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:45,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:45,935 INFO L225 Difference]: With dead ends: 2776 [2021-06-01 17:34:45,935 INFO L226 Difference]: Without dead ends: 2493 [2021-06-01 17:34:45,935 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:45,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2493 states. [2021-06-01 17:34:45,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2493 to 1445. [2021-06-01 17:34:45,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1444 states have (on average 3.9522160664819945) internal successors, (5707), 1444 states have internal predecessors, (5707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:45,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 5707 transitions. [2021-06-01 17:34:45,964 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 5707 transitions. Word has length 25 [2021-06-01 17:34:45,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:45,964 INFO L482 AbstractCegarLoop]: Abstraction has 1445 states and 5707 transitions. [2021-06-01 17:34:45,964 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:45,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 5707 transitions. [2021-06-01 17:34:45,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:45,966 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:45,966 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:45,966 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable624 [2021-06-01 17:34:45,966 INFO L430 AbstractCegarLoop]: === Iteration 626 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:45,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:45,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1512706499, now seen corresponding path program 622 times [2021-06-01 17:34:45,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:45,967 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693463102] [2021-06-01 17:34:45,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:45,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:46,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:46,040 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:46,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693463102] [2021-06-01 17:34:46,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693463102] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:46,040 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:46,040 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:46,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743261727] [2021-06-01 17:34:46,040 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:46,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:46,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:46,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:46,041 INFO L87 Difference]: Start difference. First operand 1445 states and 5707 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:46,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:46,099 INFO L93 Difference]: Finished difference Result 2756 states and 10314 transitions. [2021-06-01 17:34:46,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:46,099 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:46,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:46,104 INFO L225 Difference]: With dead ends: 2756 [2021-06-01 17:34:46,104 INFO L226 Difference]: Without dead ends: 2457 [2021-06-01 17:34:46,104 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:46,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2457 states. [2021-06-01 17:34:46,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2457 to 1409. [2021-06-01 17:34:46,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1409 states, 1408 states have (on average 3.9595170454545454) internal successors, (5575), 1408 states have internal predecessors, (5575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:46,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1409 states to 1409 states and 5575 transitions. [2021-06-01 17:34:46,133 INFO L78 Accepts]: Start accepts. Automaton has 1409 states and 5575 transitions. Word has length 25 [2021-06-01 17:34:46,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:46,133 INFO L482 AbstractCegarLoop]: Abstraction has 1409 states and 5575 transitions. [2021-06-01 17:34:46,133 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:46,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1409 states and 5575 transitions. [2021-06-01 17:34:46,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:46,135 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:46,135 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:46,135 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable625 [2021-06-01 17:34:46,135 INFO L430 AbstractCegarLoop]: === Iteration 627 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:46,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:46,135 INFO L82 PathProgramCache]: Analyzing trace with hash 563544735, now seen corresponding path program 623 times [2021-06-01 17:34:46,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:46,135 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012284823] [2021-06-01 17:34:46,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:46,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:46,211 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:46,211 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012284823] [2021-06-01 17:34:46,211 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012284823] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:46,211 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:46,211 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:46,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475594206] [2021-06-01 17:34:46,211 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:46,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:46,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:46,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:46,211 INFO L87 Difference]: Start difference. First operand 1409 states and 5575 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:46,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:46,268 INFO L93 Difference]: Finished difference Result 2692 states and 10062 transitions. [2021-06-01 17:34:46,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:46,269 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:46,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:46,273 INFO L225 Difference]: With dead ends: 2692 [2021-06-01 17:34:46,273 INFO L226 Difference]: Without dead ends: 2445 [2021-06-01 17:34:46,273 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:46,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2445 states. [2021-06-01 17:34:46,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2445 to 1433. [2021-06-01 17:34:46,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1433 states, 1432 states have (on average 3.94622905027933) internal successors, (5651), 1432 states have internal predecessors, (5651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:46,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 5651 transitions. [2021-06-01 17:34:46,303 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 5651 transitions. Word has length 25 [2021-06-01 17:34:46,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:46,303 INFO L482 AbstractCegarLoop]: Abstraction has 1433 states and 5651 transitions. [2021-06-01 17:34:46,303 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:46,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 5651 transitions. [2021-06-01 17:34:46,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:46,304 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:46,305 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:46,305 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable626 [2021-06-01 17:34:46,305 INFO L430 AbstractCegarLoop]: === Iteration 628 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:46,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:46,305 INFO L82 PathProgramCache]: Analyzing trace with hash -283252227, now seen corresponding path program 624 times [2021-06-01 17:34:46,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:46,305 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682401232] [2021-06-01 17:34:46,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:46,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:46,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:46,380 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:46,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682401232] [2021-06-01 17:34:46,380 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682401232] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:46,380 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:46,380 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:46,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064835276] [2021-06-01 17:34:46,380 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:46,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:46,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:46,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:46,380 INFO L87 Difference]: Start difference. First operand 1433 states and 5651 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:46,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:46,439 INFO L93 Difference]: Finished difference Result 2708 states and 10110 transitions. [2021-06-01 17:34:46,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:46,440 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:46,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:46,444 INFO L225 Difference]: With dead ends: 2708 [2021-06-01 17:34:46,444 INFO L226 Difference]: Without dead ends: 2403 [2021-06-01 17:34:46,444 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:46,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2403 states. [2021-06-01 17:34:46,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2403 to 1391. [2021-06-01 17:34:46,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1390 states have (on average 3.9762589928057555) internal successors, (5527), 1390 states have internal predecessors, (5527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:46,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 5527 transitions. [2021-06-01 17:34:46,473 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 5527 transitions. Word has length 25 [2021-06-01 17:34:46,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:46,473 INFO L482 AbstractCegarLoop]: Abstraction has 1391 states and 5527 transitions. [2021-06-01 17:34:46,473 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:46,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 5527 transitions. [2021-06-01 17:34:46,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:46,475 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:46,475 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:46,475 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable627 [2021-06-01 17:34:46,475 INFO L430 AbstractCegarLoop]: === Iteration 629 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:46,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:46,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1270425503, now seen corresponding path program 625 times [2021-06-01 17:34:46,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:46,475 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269119127] [2021-06-01 17:34:46,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:46,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:46,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:46,550 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:46,550 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269119127] [2021-06-01 17:34:46,550 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269119127] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:46,550 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:46,550 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:46,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162773925] [2021-06-01 17:34:46,550 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:46,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:46,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:46,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:46,550 INFO L87 Difference]: Start difference. First operand 1391 states and 5527 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:46,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:46,609 INFO L93 Difference]: Finished difference Result 2828 states and 10635 transitions. [2021-06-01 17:34:46,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:46,609 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:46,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:46,614 INFO L225 Difference]: With dead ends: 2828 [2021-06-01 17:34:46,614 INFO L226 Difference]: Without dead ends: 2543 [2021-06-01 17:34:46,614 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:46,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2543 states. [2021-06-01 17:34:46,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2543 to 1437. [2021-06-01 17:34:46,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1436 states have (on average 3.9554317548746516) internal successors, (5680), 1436 states have internal predecessors, (5680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:46,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 5680 transitions. [2021-06-01 17:34:46,644 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 5680 transitions. Word has length 25 [2021-06-01 17:34:46,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:46,644 INFO L482 AbstractCegarLoop]: Abstraction has 1437 states and 5680 transitions. [2021-06-01 17:34:46,644 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:46,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 5680 transitions. [2021-06-01 17:34:46,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:46,646 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:46,646 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:46,646 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable628 [2021-06-01 17:34:46,646 INFO L430 AbstractCegarLoop]: === Iteration 630 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:46,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:46,646 INFO L82 PathProgramCache]: Analyzing trace with hash -772911491, now seen corresponding path program 626 times [2021-06-01 17:34:46,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:46,646 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110429742] [2021-06-01 17:34:46,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:46,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:46,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:46,723 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:46,723 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110429742] [2021-06-01 17:34:46,723 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110429742] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:46,723 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:46,723 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:46,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930473418] [2021-06-01 17:34:46,723 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:46,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:46,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:46,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:46,723 INFO L87 Difference]: Start difference. First operand 1437 states and 5680 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:46,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:46,782 INFO L93 Difference]: Finished difference Result 2826 states and 10584 transitions. [2021-06-01 17:34:46,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:46,783 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:46,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:46,787 INFO L225 Difference]: With dead ends: 2826 [2021-06-01 17:34:46,787 INFO L226 Difference]: Without dead ends: 2497 [2021-06-01 17:34:46,788 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:46,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2497 states. [2021-06-01 17:34:46,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2497 to 1391. [2021-06-01 17:34:46,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1390 states have (on average 3.966187050359712) internal successors, (5513), 1390 states have internal predecessors, (5513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:46,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 5513 transitions. [2021-06-01 17:34:46,817 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 5513 transitions. Word has length 25 [2021-06-01 17:34:46,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:46,817 INFO L482 AbstractCegarLoop]: Abstraction has 1391 states and 5513 transitions. [2021-06-01 17:34:46,818 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:46,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 5513 transitions. [2021-06-01 17:34:46,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:46,819 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:46,819 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:46,819 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable629 [2021-06-01 17:34:46,819 INFO L430 AbstractCegarLoop]: === Iteration 631 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:46,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:46,820 INFO L82 PathProgramCache]: Analyzing trace with hash 423628541, now seen corresponding path program 627 times [2021-06-01 17:34:46,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:46,820 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809518375] [2021-06-01 17:34:46,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:46,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:46,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:46,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809518375] [2021-06-01 17:34:46,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809518375] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:46,895 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:46,895 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:46,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307307586] [2021-06-01 17:34:46,895 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:46,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:46,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:46,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:46,895 INFO L87 Difference]: Start difference. First operand 1391 states and 5513 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:46,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:46,953 INFO L93 Difference]: Finished difference Result 2774 states and 10390 transitions. [2021-06-01 17:34:46,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:46,953 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:46,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:46,958 INFO L225 Difference]: With dead ends: 2774 [2021-06-01 17:34:46,958 INFO L226 Difference]: Without dead ends: 2489 [2021-06-01 17:34:46,958 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:46,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2489 states. [2021-06-01 17:34:46,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2489 to 1419. [2021-06-01 17:34:46,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1419 states, 1418 states have (on average 3.949929478138223) internal successors, (5601), 1418 states have internal predecessors, (5601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:46,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 5601 transitions. [2021-06-01 17:34:46,988 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 5601 transitions. Word has length 25 [2021-06-01 17:34:46,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:46,988 INFO L482 AbstractCegarLoop]: Abstraction has 1419 states and 5601 transitions. [2021-06-01 17:34:46,988 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:46,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 5601 transitions. [2021-06-01 17:34:46,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:46,990 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:46,990 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:46,990 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable630 [2021-06-01 17:34:46,990 INFO L430 AbstractCegarLoop]: === Iteration 632 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:46,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:46,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1616094973, now seen corresponding path program 628 times [2021-06-01 17:34:46,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:46,990 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154696472] [2021-06-01 17:34:46,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:47,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:47,064 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:47,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154696472] [2021-06-01 17:34:47,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154696472] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:47,065 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:47,065 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:47,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430866449] [2021-06-01 17:34:47,065 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:47,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:47,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:47,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:47,065 INFO L87 Difference]: Start difference. First operand 1419 states and 5601 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:47,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:47,123 INFO L93 Difference]: Finished difference Result 2736 states and 10209 transitions. [2021-06-01 17:34:47,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:47,124 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:47,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:47,128 INFO L225 Difference]: With dead ends: 2736 [2021-06-01 17:34:47,128 INFO L226 Difference]: Without dead ends: 2461 [2021-06-01 17:34:47,128 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:47,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2461 states. [2021-06-01 17:34:47,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2461 to 1391. [2021-06-01 17:34:47,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1390 states have (on average 3.956115107913669) internal successors, (5499), 1390 states have internal predecessors, (5499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:47,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 5499 transitions. [2021-06-01 17:34:47,157 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 5499 transitions. Word has length 25 [2021-06-01 17:34:47,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:47,157 INFO L482 AbstractCegarLoop]: Abstraction has 1391 states and 5499 transitions. [2021-06-01 17:34:47,157 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:47,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 5499 transitions. [2021-06-01 17:34:47,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:47,159 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:47,159 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:47,159 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable631 [2021-06-01 17:34:47,159 INFO L430 AbstractCegarLoop]: === Iteration 633 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:47,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:47,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1405976155, now seen corresponding path program 629 times [2021-06-01 17:34:47,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:47,159 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773391167] [2021-06-01 17:34:47,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:47,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:47,236 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:47,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773391167] [2021-06-01 17:34:47,236 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773391167] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:47,236 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:47,236 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:47,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505396822] [2021-06-01 17:34:47,236 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:47,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:47,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:47,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:47,237 INFO L87 Difference]: Start difference. First operand 1391 states and 5499 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:47,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:47,294 INFO L93 Difference]: Finished difference Result 2770 states and 10366 transitions. [2021-06-01 17:34:47,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:47,294 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:47,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:47,299 INFO L225 Difference]: With dead ends: 2770 [2021-06-01 17:34:47,299 INFO L226 Difference]: Without dead ends: 2487 [2021-06-01 17:34:47,299 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:47,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2487 states. [2021-06-01 17:34:47,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2487 to 1419. [2021-06-01 17:34:47,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1419 states, 1418 states have (on average 3.940056417489422) internal successors, (5587), 1418 states have internal predecessors, (5587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:47,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 5587 transitions. [2021-06-01 17:34:47,328 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 5587 transitions. Word has length 25 [2021-06-01 17:34:47,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:47,328 INFO L482 AbstractCegarLoop]: Abstraction has 1419 states and 5587 transitions. [2021-06-01 17:34:47,328 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:47,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 5587 transitions. [2021-06-01 17:34:47,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:47,330 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:47,330 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:47,330 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable632 [2021-06-01 17:34:47,330 INFO L430 AbstractCegarLoop]: === Iteration 634 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:47,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:47,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1807928515, now seen corresponding path program 630 times [2021-06-01 17:34:47,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:47,331 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577994438] [2021-06-01 17:34:47,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:47,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:47,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:47,406 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:47,406 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577994438] [2021-06-01 17:34:47,406 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577994438] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:47,406 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:47,406 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:47,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604199728] [2021-06-01 17:34:47,406 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:47,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:47,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:47,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:47,407 INFO L87 Difference]: Start difference. First operand 1419 states and 5587 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:47,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:47,464 INFO L93 Difference]: Finished difference Result 2734 states and 10190 transitions. [2021-06-01 17:34:47,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:47,465 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:47,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:47,469 INFO L225 Difference]: With dead ends: 2734 [2021-06-01 17:34:47,469 INFO L226 Difference]: Without dead ends: 2445 [2021-06-01 17:34:47,470 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:47,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2445 states. [2021-06-01 17:34:47,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2445 to 1377. [2021-06-01 17:34:47,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1376 states have (on average 3.964389534883721) internal successors, (5455), 1376 states have internal predecessors, (5455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:47,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 5455 transitions. [2021-06-01 17:34:47,498 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 5455 transitions. Word has length 25 [2021-06-01 17:34:47,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:47,498 INFO L482 AbstractCegarLoop]: Abstraction has 1377 states and 5455 transitions. [2021-06-01 17:34:47,498 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:47,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 5455 transitions. [2021-06-01 17:34:47,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:47,500 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:47,500 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:47,500 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable633 [2021-06-01 17:34:47,500 INFO L430 AbstractCegarLoop]: === Iteration 635 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:47,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:47,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1591582817, now seen corresponding path program 631 times [2021-06-01 17:34:47,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:47,500 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937035876] [2021-06-01 17:34:47,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:47,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:47,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:47,576 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:47,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937035876] [2021-06-01 17:34:47,576 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937035876] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:47,576 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:47,576 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:47,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616024013] [2021-06-01 17:34:47,576 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:47,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:47,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:47,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:47,576 INFO L87 Difference]: Start difference. First operand 1377 states and 5455 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:47,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:47,636 INFO L93 Difference]: Finished difference Result 2971 states and 11171 transitions. [2021-06-01 17:34:47,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:47,636 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:47,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:47,641 INFO L225 Difference]: With dead ends: 2971 [2021-06-01 17:34:47,641 INFO L226 Difference]: Without dead ends: 2686 [2021-06-01 17:34:47,642 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:47,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2021-06-01 17:34:47,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 1470. [2021-06-01 17:34:47,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 3.950306330837304) internal successors, (5803), 1469 states have internal predecessors, (5803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:47,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5803 transitions. [2021-06-01 17:34:47,672 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5803 transitions. Word has length 25 [2021-06-01 17:34:47,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:47,673 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 5803 transitions. [2021-06-01 17:34:47,673 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:47,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5803 transitions. [2021-06-01 17:34:47,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:47,674 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:47,675 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:47,675 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable634 [2021-06-01 17:34:47,675 INFO L430 AbstractCegarLoop]: === Iteration 636 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:47,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:47,675 INFO L82 PathProgramCache]: Analyzing trace with hash 660047485, now seen corresponding path program 632 times [2021-06-01 17:34:47,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:47,675 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610344570] [2021-06-01 17:34:47,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:47,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:47,752 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:47,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610344570] [2021-06-01 17:34:47,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610344570] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:47,752 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:47,752 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:47,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844042694] [2021-06-01 17:34:47,752 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:47,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:47,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:47,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:47,753 INFO L87 Difference]: Start difference. First operand 1470 states and 5803 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:47,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:47,815 INFO L93 Difference]: Finished difference Result 2969 states and 11120 transitions. [2021-06-01 17:34:47,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:47,815 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:47,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:47,820 INFO L225 Difference]: With dead ends: 2969 [2021-06-01 17:34:47,820 INFO L226 Difference]: Without dead ends: 2640 [2021-06-01 17:34:47,821 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:47,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2021-06-01 17:34:47,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 1424. [2021-06-01 17:34:47,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 1423 states have (on average 3.9543218552354182) internal successors, (5627), 1423 states have internal predecessors, (5627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:47,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 5627 transitions. [2021-06-01 17:34:47,850 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 5627 transitions. Word has length 25 [2021-06-01 17:34:47,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:47,850 INFO L482 AbstractCegarLoop]: Abstraction has 1424 states and 5627 transitions. [2021-06-01 17:34:47,850 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:47,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 5627 transitions. [2021-06-01 17:34:47,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:47,852 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:47,852 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:47,852 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable635 [2021-06-01 17:34:47,852 INFO L430 AbstractCegarLoop]: === Iteration 637 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:47,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:47,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1165842529, now seen corresponding path program 633 times [2021-06-01 17:34:47,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:47,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288213055] [2021-06-01 17:34:47,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:47,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:47,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:47,930 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:47,930 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288213055] [2021-06-01 17:34:47,930 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288213055] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:47,930 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:47,930 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:47,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458459414] [2021-06-01 17:34:47,930 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:47,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:47,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:47,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:47,930 INFO L87 Difference]: Start difference. First operand 1424 states and 5627 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:47,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:47,990 INFO L93 Difference]: Finished difference Result 2945 states and 11025 transitions. [2021-06-01 17:34:47,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:47,990 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:47,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:47,995 INFO L225 Difference]: With dead ends: 2945 [2021-06-01 17:34:47,995 INFO L226 Difference]: Without dead ends: 2660 [2021-06-01 17:34:47,995 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:48,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2021-06-01 17:34:48,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 1503. [2021-06-01 17:34:48,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1503 states, 1502 states have (on average 3.9241011984021306) internal successors, (5894), 1502 states have internal predecessors, (5894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:48,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1503 states to 1503 states and 5894 transitions. [2021-06-01 17:34:48,026 INFO L78 Accepts]: Start accepts. Automaton has 1503 states and 5894 transitions. Word has length 25 [2021-06-01 17:34:48,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:48,026 INFO L482 AbstractCegarLoop]: Abstraction has 1503 states and 5894 transitions. [2021-06-01 17:34:48,026 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:48,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1503 states and 5894 transitions. [2021-06-01 17:34:48,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:48,028 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:48,028 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:48,028 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable636 [2021-06-01 17:34:48,028 INFO L430 AbstractCegarLoop]: === Iteration 638 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:48,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:48,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1721630817, now seen corresponding path program 634 times [2021-06-01 17:34:48,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:48,029 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446890279] [2021-06-01 17:34:48,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:48,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:48,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:48,106 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:48,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446890279] [2021-06-01 17:34:48,106 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446890279] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:48,106 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:48,106 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:48,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778772163] [2021-06-01 17:34:48,107 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:48,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:48,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:48,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:48,107 INFO L87 Difference]: Start difference. First operand 1503 states and 5894 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:48,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:48,154 INFO L93 Difference]: Finished difference Result 2786 states and 10467 transitions. [2021-06-01 17:34:48,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:48,154 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:48,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:48,159 INFO L225 Difference]: With dead ends: 2786 [2021-06-01 17:34:48,159 INFO L226 Difference]: Without dead ends: 2389 [2021-06-01 17:34:48,159 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:48,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-06-01 17:34:48,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 1424. [2021-06-01 17:34:48,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 1423 states have (on average 3.926914968376669) internal successors, (5588), 1423 states have internal predecessors, (5588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:48,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 5588 transitions. [2021-06-01 17:34:48,187 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 5588 transitions. Word has length 25 [2021-06-01 17:34:48,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:48,188 INFO L482 AbstractCegarLoop]: Abstraction has 1424 states and 5588 transitions. [2021-06-01 17:34:48,188 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:48,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 5588 transitions. [2021-06-01 17:34:48,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:48,189 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:48,189 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:48,189 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable637 [2021-06-01 17:34:48,190 INFO L430 AbstractCegarLoop]: === Iteration 639 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:48,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:48,190 INFO L82 PathProgramCache]: Analyzing trace with hash -183494915, now seen corresponding path program 635 times [2021-06-01 17:34:48,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:48,190 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587558135] [2021-06-01 17:34:48,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:48,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:48,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:48,272 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:48,272 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587558135] [2021-06-01 17:34:48,272 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587558135] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:48,272 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:48,272 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:48,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598549758] [2021-06-01 17:34:48,272 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:48,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:48,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:48,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:48,273 INFO L87 Difference]: Start difference. First operand 1424 states and 5588 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:48,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:48,351 INFO L93 Difference]: Finished difference Result 2926 states and 10930 transitions. [2021-06-01 17:34:48,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:48,351 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:48,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:48,356 INFO L225 Difference]: With dead ends: 2926 [2021-06-01 17:34:48,356 INFO L226 Difference]: Without dead ends: 2643 [2021-06-01 17:34:48,356 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:48,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2643 states. [2021-06-01 17:34:48,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2643 to 1486. [2021-06-01 17:34:48,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 3.909090909090909) internal successors, (5805), 1485 states have internal predecessors, (5805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:48,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5805 transitions. [2021-06-01 17:34:48,391 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5805 transitions. Word has length 25 [2021-06-01 17:34:48,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:48,391 INFO L482 AbstractCegarLoop]: Abstraction has 1486 states and 5805 transitions. [2021-06-01 17:34:48,391 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:48,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5805 transitions. [2021-06-01 17:34:48,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:48,394 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:48,394 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:48,394 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable638 [2021-06-01 17:34:48,394 INFO L430 AbstractCegarLoop]: === Iteration 640 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:48,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:48,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1754082783, now seen corresponding path program 636 times [2021-06-01 17:34:48,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:48,402 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210323732] [2021-06-01 17:34:48,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:48,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:48,541 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:48,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210323732] [2021-06-01 17:34:48,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210323732] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:48,541 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:48,541 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:48,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204902514] [2021-06-01 17:34:48,542 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:48,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:48,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:48,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:48,542 INFO L87 Difference]: Start difference. First operand 1486 states and 5805 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:48,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:48,590 INFO L93 Difference]: Finished difference Result 2769 states and 10378 transitions. [2021-06-01 17:34:48,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:48,590 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:48,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:48,594 INFO L225 Difference]: With dead ends: 2769 [2021-06-01 17:34:48,594 INFO L226 Difference]: Without dead ends: 2342 [2021-06-01 17:34:48,594 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:48,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2342 states. [2021-06-01 17:34:48,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2342 to 1377. [2021-06-01 17:34:48,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1376 states have (on average 3.9505813953488373) internal successors, (5436), 1376 states have internal predecessors, (5436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:48,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 5436 transitions. [2021-06-01 17:34:48,622 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 5436 transitions. Word has length 25 [2021-06-01 17:34:48,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:48,622 INFO L482 AbstractCegarLoop]: Abstraction has 1377 states and 5436 transitions. [2021-06-01 17:34:48,622 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:48,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 5436 transitions. [2021-06-01 17:34:48,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:48,625 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:48,625 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:48,625 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable639 [2021-06-01 17:34:48,625 INFO L430 AbstractCegarLoop]: === Iteration 641 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:48,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:48,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1846636413, now seen corresponding path program 637 times [2021-06-01 17:34:48,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:48,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570026186] [2021-06-01 17:34:48,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:48,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:48,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:48,701 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:48,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570026186] [2021-06-01 17:34:48,701 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570026186] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:48,701 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:48,701 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:48,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456991919] [2021-06-01 17:34:48,701 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:48,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:48,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:48,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:48,702 INFO L87 Difference]: Start difference. First operand 1377 states and 5436 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:48,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:48,765 INFO L93 Difference]: Finished difference Result 2846 states and 10624 transitions. [2021-06-01 17:34:48,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:48,765 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:48,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:48,770 INFO L225 Difference]: With dead ends: 2846 [2021-06-01 17:34:48,770 INFO L226 Difference]: Without dead ends: 2561 [2021-06-01 17:34:48,770 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:48,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2561 states. [2021-06-01 17:34:48,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2561 to 1435. [2021-06-01 17:34:48,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1435 states, 1434 states have (on average 3.9421199442119943) internal successors, (5653), 1434 states have internal predecessors, (5653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:48,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1435 states to 1435 states and 5653 transitions. [2021-06-01 17:34:48,800 INFO L78 Accepts]: Start accepts. Automaton has 1435 states and 5653 transitions. Word has length 25 [2021-06-01 17:34:48,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:48,800 INFO L482 AbstractCegarLoop]: Abstraction has 1435 states and 5653 transitions. [2021-06-01 17:34:48,800 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:48,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1435 states and 5653 transitions. [2021-06-01 17:34:48,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:48,802 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:48,802 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:48,802 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable640 [2021-06-01 17:34:48,802 INFO L430 AbstractCegarLoop]: === Iteration 642 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:48,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:48,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1255864451, now seen corresponding path program 638 times [2021-06-01 17:34:48,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:48,802 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488360566] [2021-06-01 17:34:48,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:48,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:48,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:48,880 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:48,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488360566] [2021-06-01 17:34:48,880 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488360566] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:48,880 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:48,880 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:48,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199448935] [2021-06-01 17:34:48,880 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:48,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:48,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:48,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:48,881 INFO L87 Difference]: Start difference. First operand 1435 states and 5653 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:48,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:48,943 INFO L93 Difference]: Finished difference Result 2808 states and 10443 transitions. [2021-06-01 17:34:48,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:48,943 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:48,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:48,948 INFO L225 Difference]: With dead ends: 2808 [2021-06-01 17:34:48,948 INFO L226 Difference]: Without dead ends: 2533 [2021-06-01 17:34:48,948 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:48,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2533 states. [2021-06-01 17:34:48,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2533 to 1407. [2021-06-01 17:34:48,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1407 states, 1406 states have (on average 3.9480796586059745) internal successors, (5551), 1406 states have internal predecessors, (5551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:48,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 5551 transitions. [2021-06-01 17:34:48,977 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 5551 transitions. Word has length 25 [2021-06-01 17:34:48,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:48,977 INFO L482 AbstractCegarLoop]: Abstraction has 1407 states and 5551 transitions. [2021-06-01 17:34:48,977 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:48,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 5551 transitions. [2021-06-01 17:34:48,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:48,979 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:48,979 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:48,979 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable641 [2021-06-01 17:34:48,979 INFO L430 AbstractCegarLoop]: === Iteration 643 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:48,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:48,979 INFO L82 PathProgramCache]: Analyzing trace with hash 536055391, now seen corresponding path program 639 times [2021-06-01 17:34:48,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:48,979 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71610068] [2021-06-01 17:34:48,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:49,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:49,059 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:49,059 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71610068] [2021-06-01 17:34:49,059 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71610068] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:49,059 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:49,059 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:49,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631656955] [2021-06-01 17:34:49,059 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:49,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:49,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:49,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:49,059 INFO L87 Difference]: Start difference. First operand 1407 states and 5551 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:49,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:49,123 INFO L93 Difference]: Finished difference Result 2874 states and 10718 transitions. [2021-06-01 17:34:49,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:49,123 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:49,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:49,128 INFO L225 Difference]: With dead ends: 2874 [2021-06-01 17:34:49,128 INFO L226 Difference]: Without dead ends: 2589 [2021-06-01 17:34:49,128 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:49,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2589 states. [2021-06-01 17:34:49,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2589 to 1486. [2021-06-01 17:34:49,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 3.917845117845118) internal successors, (5818), 1485 states have internal predecessors, (5818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:49,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5818 transitions. [2021-06-01 17:34:49,158 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5818 transitions. Word has length 25 [2021-06-01 17:34:49,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:49,158 INFO L482 AbstractCegarLoop]: Abstraction has 1486 states and 5818 transitions. [2021-06-01 17:34:49,158 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:49,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5818 transitions. [2021-06-01 17:34:49,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:49,160 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:49,160 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:49,160 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable642 [2021-06-01 17:34:49,160 INFO L430 AbstractCegarLoop]: === Iteration 644 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:49,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:49,160 INFO L82 PathProgramCache]: Analyzing trace with hash 550274941, now seen corresponding path program 640 times [2021-06-01 17:34:49,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:49,161 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348250207] [2021-06-01 17:34:49,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:49,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:49,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:49,237 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:49,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348250207] [2021-06-01 17:34:49,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348250207] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:49,237 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:49,237 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:49,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465857288] [2021-06-01 17:34:49,237 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:49,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:49,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:49,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:49,237 INFO L87 Difference]: Start difference. First operand 1486 states and 5818 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:49,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:49,287 INFO L93 Difference]: Finished difference Result 2715 states and 10160 transitions. [2021-06-01 17:34:49,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:49,287 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:49,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:49,292 INFO L225 Difference]: With dead ends: 2715 [2021-06-01 17:34:49,292 INFO L226 Difference]: Without dead ends: 2318 [2021-06-01 17:34:49,292 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:49,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2021-06-01 17:34:49,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 1407. [2021-06-01 17:34:49,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1407 states, 1406 states have (on average 3.9267425320056897) internal successors, (5521), 1406 states have internal predecessors, (5521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:49,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 5521 transitions. [2021-06-01 17:34:49,321 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 5521 transitions. Word has length 25 [2021-06-01 17:34:49,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:49,321 INFO L482 AbstractCegarLoop]: Abstraction has 1407 states and 5521 transitions. [2021-06-01 17:34:49,321 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:49,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 5521 transitions. [2021-06-01 17:34:49,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:49,323 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:49,323 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:49,323 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable643 [2021-06-01 17:34:49,323 INFO L430 AbstractCegarLoop]: === Iteration 645 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:49,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:49,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1502502781, now seen corresponding path program 641 times [2021-06-01 17:34:49,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:49,323 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354614839] [2021-06-01 17:34:49,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:49,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:49,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:49,408 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:49,408 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354614839] [2021-06-01 17:34:49,408 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354614839] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:49,408 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:49,408 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:49,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966078418] [2021-06-01 17:34:49,409 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:49,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:49,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:49,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:49,409 INFO L87 Difference]: Start difference. First operand 1407 states and 5521 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:49,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:49,473 INFO L93 Difference]: Finished difference Result 2801 states and 10401 transitions. [2021-06-01 17:34:49,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:49,473 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:49,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:49,478 INFO L225 Difference]: With dead ends: 2801 [2021-06-01 17:34:49,478 INFO L226 Difference]: Without dead ends: 2554 [2021-06-01 17:34:49,478 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:49,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2021-06-01 17:34:49,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 1451. [2021-06-01 17:34:49,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1451 states, 1450 states have (on average 3.912413793103448) internal successors, (5673), 1450 states have internal predecessors, (5673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:49,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 5673 transitions. [2021-06-01 17:34:49,508 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 5673 transitions. Word has length 25 [2021-06-01 17:34:49,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:49,508 INFO L482 AbstractCegarLoop]: Abstraction has 1451 states and 5673 transitions. [2021-06-01 17:34:49,508 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:49,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 5673 transitions. [2021-06-01 17:34:49,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:49,510 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:49,510 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:49,510 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable644 [2021-06-01 17:34:49,510 INFO L430 AbstractCegarLoop]: === Iteration 646 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:49,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:49,510 INFO L82 PathProgramCache]: Analyzing trace with hash 432983775, now seen corresponding path program 642 times [2021-06-01 17:34:49,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:49,510 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650798303] [2021-06-01 17:34:49,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:49,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:49,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:49,596 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:49,596 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650798303] [2021-06-01 17:34:49,596 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650798303] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:49,596 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:49,596 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:49,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443628083] [2021-06-01 17:34:49,596 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:49,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:49,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:49,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:49,596 INFO L87 Difference]: Start difference. First operand 1451 states and 5673 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:49,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:49,648 INFO L93 Difference]: Finished difference Result 2680 states and 10015 transitions. [2021-06-01 17:34:49,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:49,648 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:49,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:49,653 INFO L225 Difference]: With dead ends: 2680 [2021-06-01 17:34:49,653 INFO L226 Difference]: Without dead ends: 2288 [2021-06-01 17:34:49,653 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 91.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:49,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2288 states. [2021-06-01 17:34:49,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2288 to 1377. [2021-06-01 17:34:49,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1376 states have (on average 3.9396802325581395) internal successors, (5421), 1376 states have internal predecessors, (5421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:49,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 5421 transitions. [2021-06-01 17:34:49,680 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 5421 transitions. Word has length 25 [2021-06-01 17:34:49,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:49,680 INFO L482 AbstractCegarLoop]: Abstraction has 1377 states and 5421 transitions. [2021-06-01 17:34:49,680 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:49,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 5421 transitions. [2021-06-01 17:34:49,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:49,682 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:49,682 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:49,682 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable645 [2021-06-01 17:34:49,682 INFO L430 AbstractCegarLoop]: === Iteration 647 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:49,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:49,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1475934373, now seen corresponding path program 643 times [2021-06-01 17:34:49,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:49,682 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653332023] [2021-06-01 17:34:49,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:49,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:49,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:49,760 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:49,760 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653332023] [2021-06-01 17:34:49,760 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653332023] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:49,760 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:49,760 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:49,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435476975] [2021-06-01 17:34:49,760 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:49,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:49,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:49,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:49,761 INFO L87 Difference]: Start difference. First operand 1377 states and 5421 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:49,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:49,824 INFO L93 Difference]: Finished difference Result 2815 states and 10515 transitions. [2021-06-01 17:34:49,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:49,824 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:49,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:49,829 INFO L225 Difference]: With dead ends: 2815 [2021-06-01 17:34:49,829 INFO L226 Difference]: Without dead ends: 2532 [2021-06-01 17:34:49,829 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:49,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2021-06-01 17:34:49,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 1427. [2021-06-01 17:34:49,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1427 states, 1426 states have (on average 3.934081346423562) internal successors, (5610), 1426 states have internal predecessors, (5610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:49,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1427 states to 1427 states and 5610 transitions. [2021-06-01 17:34:49,858 INFO L78 Accepts]: Start accepts. Automaton has 1427 states and 5610 transitions. Word has length 25 [2021-06-01 17:34:49,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:49,858 INFO L482 AbstractCegarLoop]: Abstraction has 1427 states and 5610 transitions. [2021-06-01 17:34:49,858 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:49,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1427 states and 5610 transitions. [2021-06-01 17:34:49,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:49,860 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:49,860 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:49,860 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable646 [2021-06-01 17:34:49,860 INFO L430 AbstractCegarLoop]: === Iteration 648 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:49,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:49,860 INFO L82 PathProgramCache]: Analyzing trace with hash -394871747, now seen corresponding path program 644 times [2021-06-01 17:34:49,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:49,860 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528390352] [2021-06-01 17:34:49,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:49,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:49,937 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:49,937 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528390352] [2021-06-01 17:34:49,937 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528390352] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:49,937 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:49,937 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:49,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657414526] [2021-06-01 17:34:49,938 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:49,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:49,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:49,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:49,938 INFO L87 Difference]: Start difference. First operand 1427 states and 5610 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:49,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:49,998 INFO L93 Difference]: Finished difference Result 2779 states and 10339 transitions. [2021-06-01 17:34:49,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:49,998 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:49,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:50,003 INFO L225 Difference]: With dead ends: 2779 [2021-06-01 17:34:50,003 INFO L226 Difference]: Without dead ends: 2504 [2021-06-01 17:34:50,003 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:50,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2504 states. [2021-06-01 17:34:50,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2504 to 1399. [2021-06-01 17:34:50,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1399 states, 1398 states have (on average 3.939914163090129) internal successors, (5508), 1398 states have internal predecessors, (5508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:50,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 5508 transitions. [2021-06-01 17:34:50,032 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 5508 transitions. Word has length 25 [2021-06-01 17:34:50,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:50,032 INFO L482 AbstractCegarLoop]: Abstraction has 1399 states and 5508 transitions. [2021-06-01 17:34:50,032 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:50,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 5508 transitions. [2021-06-01 17:34:50,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:50,033 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:50,033 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:50,033 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable647 [2021-06-01 17:34:50,034 INFO L430 AbstractCegarLoop]: === Iteration 649 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:50,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:50,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1508451901, now seen corresponding path program 645 times [2021-06-01 17:34:50,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:50,034 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873498895] [2021-06-01 17:34:50,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:50,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:50,110 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:50,110 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873498895] [2021-06-01 17:34:50,110 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873498895] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:50,110 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:50,110 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:50,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702766800] [2021-06-01 17:34:50,110 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:50,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:50,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:50,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:50,111 INFO L87 Difference]: Start difference. First operand 1399 states and 5508 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:50,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:50,168 INFO L93 Difference]: Finished difference Result 2828 states and 10563 transitions. [2021-06-01 17:34:50,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:50,169 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:50,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:50,173 INFO L225 Difference]: With dead ends: 2828 [2021-06-01 17:34:50,174 INFO L226 Difference]: Without dead ends: 2545 [2021-06-01 17:34:50,174 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:50,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2545 states. [2021-06-01 17:34:50,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2545 to 1461. [2021-06-01 17:34:50,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 1460 states have (on average 3.921232876712329) internal successors, (5725), 1460 states have internal predecessors, (5725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:50,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 5725 transitions. [2021-06-01 17:34:50,203 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 5725 transitions. Word has length 25 [2021-06-01 17:34:50,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:50,203 INFO L482 AbstractCegarLoop]: Abstraction has 1461 states and 5725 transitions. [2021-06-01 17:34:50,203 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:50,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 5725 transitions. [2021-06-01 17:34:50,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:50,205 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:50,205 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:50,205 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable648 [2021-06-01 17:34:50,205 INFO L430 AbstractCegarLoop]: === Iteration 650 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:50,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:50,205 INFO L82 PathProgramCache]: Analyzing trace with hash -278929859, now seen corresponding path program 646 times [2021-06-01 17:34:50,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:50,205 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963618273] [2021-06-01 17:34:50,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:50,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:50,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:50,281 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:50,281 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963618273] [2021-06-01 17:34:50,282 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963618273] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:50,282 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:50,282 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:50,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815477003] [2021-06-01 17:34:50,282 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:50,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:50,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:50,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:50,282 INFO L87 Difference]: Start difference. First operand 1461 states and 5725 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:50,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:50,341 INFO L93 Difference]: Finished difference Result 2671 states and 10011 transitions. [2021-06-01 17:34:50,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:50,341 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:50,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:50,347 INFO L225 Difference]: With dead ends: 2671 [2021-06-01 17:34:50,347 INFO L226 Difference]: Without dead ends: 2291 [2021-06-01 17:34:50,347 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:50,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2021-06-01 17:34:50,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 1399. [2021-06-01 17:34:50,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1399 states, 1398 states have (on average 3.9241773962804007) internal successors, (5486), 1398 states have internal predecessors, (5486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:50,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 5486 transitions. [2021-06-01 17:34:50,388 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 5486 transitions. Word has length 25 [2021-06-01 17:34:50,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:50,388 INFO L482 AbstractCegarLoop]: Abstraction has 1399 states and 5486 transitions. [2021-06-01 17:34:50,388 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:50,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 5486 transitions. [2021-06-01 17:34:50,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:50,390 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:50,391 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:50,391 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable649 [2021-06-01 17:34:50,391 INFO L430 AbstractCegarLoop]: === Iteration 651 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:50,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:50,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1896456863, now seen corresponding path program 647 times [2021-06-01 17:34:50,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:50,391 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467689773] [2021-06-01 17:34:50,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:50,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:50,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:50,499 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:50,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467689773] [2021-06-01 17:34:50,499 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467689773] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:50,499 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:50,499 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:50,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449651957] [2021-06-01 17:34:50,500 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:50,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:50,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:50,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:50,500 INFO L87 Difference]: Start difference. First operand 1399 states and 5486 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:50,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:50,577 INFO L93 Difference]: Finished difference Result 2774 states and 10310 transitions. [2021-06-01 17:34:50,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:50,578 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:50,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:50,584 INFO L225 Difference]: With dead ends: 2774 [2021-06-01 17:34:50,584 INFO L226 Difference]: Without dead ends: 2527 [2021-06-01 17:34:50,584 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 132.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:50,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2527 states. [2021-06-01 17:34:50,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2527 to 1443. [2021-06-01 17:34:50,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1443 states, 1442 states have (on average 3.909847434119279) internal successors, (5638), 1442 states have internal predecessors, (5638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:50,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 5638 transitions. [2021-06-01 17:34:50,621 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 5638 transitions. Word has length 25 [2021-06-01 17:34:50,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:50,621 INFO L482 AbstractCegarLoop]: Abstraction has 1443 states and 5638 transitions. [2021-06-01 17:34:50,621 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:50,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 5638 transitions. [2021-06-01 17:34:50,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:50,623 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:50,623 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:50,623 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable650 [2021-06-01 17:34:50,623 INFO L430 AbstractCegarLoop]: === Iteration 652 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:50,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:50,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1193861251, now seen corresponding path program 648 times [2021-06-01 17:34:50,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:50,624 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666505563] [2021-06-01 17:34:50,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:50,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:50,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:50,711 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:50,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666505563] [2021-06-01 17:34:50,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666505563] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:50,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:50,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:50,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751397270] [2021-06-01 17:34:50,711 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:50,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:50,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:50,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:50,712 INFO L87 Difference]: Start difference. First operand 1443 states and 5638 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:50,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:50,757 INFO L93 Difference]: Finished difference Result 2653 states and 9924 transitions. [2021-06-01 17:34:50,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:50,757 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:50,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:50,761 INFO L225 Difference]: With dead ends: 2653 [2021-06-01 17:34:50,761 INFO L226 Difference]: Without dead ends: 2246 [2021-06-01 17:34:50,761 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:50,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2021-06-01 17:34:50,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 1354. [2021-06-01 17:34:50,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 3.960827790096083) internal successors, (5359), 1353 states have internal predecessors, (5359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:50,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 5359 transitions. [2021-06-01 17:34:50,788 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 5359 transitions. Word has length 25 [2021-06-01 17:34:50,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:50,788 INFO L482 AbstractCegarLoop]: Abstraction has 1354 states and 5359 transitions. [2021-06-01 17:34:50,788 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:50,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 5359 transitions. [2021-06-01 17:34:50,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:50,790 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:50,790 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:50,790 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable651 [2021-06-01 17:34:50,790 INFO L430 AbstractCegarLoop]: === Iteration 653 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:50,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:50,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1725712387, now seen corresponding path program 649 times [2021-06-01 17:34:50,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:50,791 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195667497] [2021-06-01 17:34:50,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:50,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:50,865 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:50,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195667497] [2021-06-01 17:34:50,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195667497] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:50,865 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:50,865 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:50,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323757222] [2021-06-01 17:34:50,865 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:50,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:50,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:50,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:50,865 INFO L87 Difference]: Start difference. First operand 1354 states and 5359 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:50,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:50,931 INFO L93 Difference]: Finished difference Result 2777 states and 10420 transitions. [2021-06-01 17:34:50,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:50,932 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:50,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:50,936 INFO L225 Difference]: With dead ends: 2777 [2021-06-01 17:34:50,937 INFO L226 Difference]: Without dead ends: 2492 [2021-06-01 17:34:50,937 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:50,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2492 states. [2021-06-01 17:34:50,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2492 to 1400. [2021-06-01 17:34:50,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1399 states have (on average 3.9399571122230164) internal successors, (5512), 1399 states have internal predecessors, (5512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:50,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 5512 transitions. [2021-06-01 17:34:50,966 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 5512 transitions. Word has length 25 [2021-06-01 17:34:50,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:50,966 INFO L482 AbstractCegarLoop]: Abstraction has 1400 states and 5512 transitions. [2021-06-01 17:34:50,966 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:50,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 5512 transitions. [2021-06-01 17:34:50,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:50,967 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:50,968 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:50,968 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable652 [2021-06-01 17:34:50,968 INFO L430 AbstractCegarLoop]: === Iteration 654 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:50,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:50,968 INFO L82 PathProgramCache]: Analyzing trace with hash 525917915, now seen corresponding path program 650 times [2021-06-01 17:34:50,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:50,968 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853818587] [2021-06-01 17:34:50,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:50,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:51,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:51,042 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:51,042 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853818587] [2021-06-01 17:34:51,042 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853818587] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:51,042 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:51,042 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:51,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874725802] [2021-06-01 17:34:51,043 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:51,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:51,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:51,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:51,043 INFO L87 Difference]: Start difference. First operand 1400 states and 5512 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:51,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:51,102 INFO L93 Difference]: Finished difference Result 2775 states and 10369 transitions. [2021-06-01 17:34:51,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:51,103 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:51,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:51,107 INFO L225 Difference]: With dead ends: 2775 [2021-06-01 17:34:51,107 INFO L226 Difference]: Without dead ends: 2446 [2021-06-01 17:34:51,108 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:51,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2446 states. [2021-06-01 17:34:51,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2446 to 1354. [2021-06-01 17:34:51,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 3.9475240206947526) internal successors, (5341), 1353 states have internal predecessors, (5341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:51,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 5341 transitions. [2021-06-01 17:34:51,136 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 5341 transitions. Word has length 25 [2021-06-01 17:34:51,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:51,136 INFO L482 AbstractCegarLoop]: Abstraction has 1354 states and 5341 transitions. [2021-06-01 17:34:51,136 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:51,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 5341 transitions. [2021-06-01 17:34:51,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:51,138 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:51,138 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:51,138 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable653 [2021-06-01 17:34:51,138 INFO L430 AbstractCegarLoop]: === Iteration 655 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:51,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:51,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1773228029, now seen corresponding path program 651 times [2021-06-01 17:34:51,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:51,138 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064572642] [2021-06-01 17:34:51,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:51,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:51,223 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:51,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064572642] [2021-06-01 17:34:51,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064572642] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:51,223 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:51,223 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:51,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008193147] [2021-06-01 17:34:51,223 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:51,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:51,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:51,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:51,224 INFO L87 Difference]: Start difference. First operand 1354 states and 5341 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:51,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:51,278 INFO L93 Difference]: Finished difference Result 2747 states and 10283 transitions. [2021-06-01 17:34:51,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:51,279 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:51,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:51,283 INFO L225 Difference]: With dead ends: 2747 [2021-06-01 17:34:51,283 INFO L226 Difference]: Without dead ends: 2462 [2021-06-01 17:34:51,283 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:51,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2462 states. [2021-06-01 17:34:51,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2462 to 1390. [2021-06-01 17:34:51,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 1389 states have (on average 3.931605471562275) internal successors, (5461), 1389 states have internal predecessors, (5461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:51,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 5461 transitions. [2021-06-01 17:34:51,312 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 5461 transitions. Word has length 25 [2021-06-01 17:34:51,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:51,312 INFO L482 AbstractCegarLoop]: Abstraction has 1390 states and 5461 transitions. [2021-06-01 17:34:51,312 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:51,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 5461 transitions. [2021-06-01 17:34:51,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:51,314 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:51,314 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:51,314 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable654 [2021-06-01 17:34:51,314 INFO L430 AbstractCegarLoop]: === Iteration 656 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:51,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:51,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1965950979, now seen corresponding path program 652 times [2021-06-01 17:34:51,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:51,314 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778554913] [2021-06-01 17:34:51,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:51,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:51,397 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:51,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778554913] [2021-06-01 17:34:51,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778554913] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:51,397 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:51,397 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:51,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951769253] [2021-06-01 17:34:51,397 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:51,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:51,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:51,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:51,397 INFO L87 Difference]: Start difference. First operand 1390 states and 5461 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:51,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:51,453 INFO L93 Difference]: Finished difference Result 2725 states and 10166 transitions. [2021-06-01 17:34:51,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:51,454 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:51,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:51,458 INFO L225 Difference]: With dead ends: 2725 [2021-06-01 17:34:51,458 INFO L226 Difference]: Without dead ends: 2426 [2021-06-01 17:34:51,458 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:51,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2426 states. [2021-06-01 17:34:51,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2426 to 1354. [2021-06-01 17:34:51,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 3.934220251293422) internal successors, (5323), 1353 states have internal predecessors, (5323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:51,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 5323 transitions. [2021-06-01 17:34:51,487 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 5323 transitions. Word has length 25 [2021-06-01 17:34:51,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:51,487 INFO L482 AbstractCegarLoop]: Abstraction has 1354 states and 5323 transitions. [2021-06-01 17:34:51,487 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:51,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 5323 transitions. [2021-06-01 17:34:51,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:51,489 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:51,489 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:51,489 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable655 [2021-06-01 17:34:51,489 INFO L430 AbstractCegarLoop]: === Iteration 657 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:51,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:51,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1539391653, now seen corresponding path program 653 times [2021-06-01 17:34:51,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:51,489 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695571550] [2021-06-01 17:34:51,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:51,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:51,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:51,563 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:51,563 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695571550] [2021-06-01 17:34:51,563 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695571550] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:51,563 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:51,563 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:51,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573871212] [2021-06-01 17:34:51,564 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:51,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:51,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:51,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:51,564 INFO L87 Difference]: Start difference. First operand 1354 states and 5323 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:51,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:51,618 INFO L93 Difference]: Finished difference Result 2743 states and 10255 transitions. [2021-06-01 17:34:51,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:51,619 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:51,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:51,623 INFO L225 Difference]: With dead ends: 2743 [2021-06-01 17:34:51,623 INFO L226 Difference]: Without dead ends: 2460 [2021-06-01 17:34:51,624 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:51,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2021-06-01 17:34:51,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 1390. [2021-06-01 17:34:51,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 1389 states have (on average 3.9186465082793376) internal successors, (5443), 1389 states have internal predecessors, (5443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:51,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 5443 transitions. [2021-06-01 17:34:51,652 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 5443 transitions. Word has length 25 [2021-06-01 17:34:51,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:51,652 INFO L482 AbstractCegarLoop]: Abstraction has 1390 states and 5443 transitions. [2021-06-01 17:34:51,652 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:51,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 5443 transitions. [2021-06-01 17:34:51,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:51,654 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:51,654 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:51,654 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable656 [2021-06-01 17:34:51,654 INFO L430 AbstractCegarLoop]: === Iteration 658 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:51,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:51,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1746199619, now seen corresponding path program 654 times [2021-06-01 17:34:51,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:51,654 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522236047] [2021-06-01 17:34:51,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:51,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:51,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:51,728 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:51,728 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522236047] [2021-06-01 17:34:51,728 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522236047] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:51,728 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:51,728 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:51,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188595649] [2021-06-01 17:34:51,729 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:51,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:51,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:51,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:51,729 INFO L87 Difference]: Start difference. First operand 1390 states and 5443 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:51,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:51,786 INFO L93 Difference]: Finished difference Result 2723 states and 10143 transitions. [2021-06-01 17:34:51,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:51,786 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:51,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:51,791 INFO L225 Difference]: With dead ends: 2723 [2021-06-01 17:34:51,791 INFO L226 Difference]: Without dead ends: 2406 [2021-06-01 17:34:51,791 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:51,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2406 states. [2021-06-01 17:34:51,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2406 to 1336. [2021-06-01 17:34:51,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1336 states, 1335 states have (on average 3.9423220973782773) internal successors, (5263), 1335 states have internal predecessors, (5263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:51,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 5263 transitions. [2021-06-01 17:34:51,819 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 5263 transitions. Word has length 25 [2021-06-01 17:34:51,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:51,819 INFO L482 AbstractCegarLoop]: Abstraction has 1336 states and 5263 transitions. [2021-06-01 17:34:51,819 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:51,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 5263 transitions. [2021-06-01 17:34:51,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:51,820 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:51,820 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:51,821 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable657 [2021-06-01 17:34:51,821 INFO L430 AbstractCegarLoop]: === Iteration 659 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:51,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:51,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1834794719, now seen corresponding path program 655 times [2021-06-01 17:34:51,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:51,821 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840745060] [2021-06-01 17:34:51,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:51,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:51,896 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:51,896 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840745060] [2021-06-01 17:34:51,896 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840745060] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:51,896 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:51,896 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:51,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351899548] [2021-06-01 17:34:51,896 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:51,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:51,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:51,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:51,897 INFO L87 Difference]: Start difference. First operand 1336 states and 5263 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:51,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:51,953 INFO L93 Difference]: Finished difference Result 2837 states and 10585 transitions. [2021-06-01 17:34:51,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:51,953 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:51,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:51,958 INFO L225 Difference]: With dead ends: 2837 [2021-06-01 17:34:51,958 INFO L226 Difference]: Without dead ends: 2552 [2021-06-01 17:34:51,958 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:51,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2552 states. [2021-06-01 17:34:51,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2552 to 1336. [2021-06-01 17:34:51,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1336 states, 1335 states have (on average 3.9078651685393258) internal successors, (5217), 1335 states have internal predecessors, (5217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:51,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 5217 transitions. [2021-06-01 17:34:51,987 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 5217 transitions. Word has length 25 [2021-06-01 17:34:51,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:51,987 INFO L482 AbstractCegarLoop]: Abstraction has 1336 states and 5217 transitions. [2021-06-01 17:34:51,987 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:51,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 5217 transitions. [2021-06-01 17:34:51,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:51,989 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:51,989 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:51,989 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable658 [2021-06-01 17:34:51,989 INFO L430 AbstractCegarLoop]: === Iteration 660 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:51,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:51,989 INFO L82 PathProgramCache]: Analyzing trace with hash -208542275, now seen corresponding path program 656 times [2021-06-01 17:34:51,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:51,989 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984388870] [2021-06-01 17:34:51,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:51,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:52,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:52,064 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:52,064 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984388870] [2021-06-01 17:34:52,064 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984388870] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:52,064 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:52,064 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:52,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549349977] [2021-06-01 17:34:52,064 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:52,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:52,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:52,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:52,065 INFO L87 Difference]: Start difference. First operand 1336 states and 5217 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:52,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:52,122 INFO L93 Difference]: Finished difference Result 2835 states and 10534 transitions. [2021-06-01 17:34:52,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:52,122 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:52,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:52,127 INFO L225 Difference]: With dead ends: 2835 [2021-06-01 17:34:52,127 INFO L226 Difference]: Without dead ends: 2506 [2021-06-01 17:34:52,127 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:52,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2021-06-01 17:34:52,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 1290. [2021-06-01 17:34:52,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1289 states have (on average 3.9107835531419703) internal successors, (5041), 1289 states have internal predecessors, (5041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:52,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 5041 transitions. [2021-06-01 17:34:52,155 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 5041 transitions. Word has length 25 [2021-06-01 17:34:52,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:52,155 INFO L482 AbstractCegarLoop]: Abstraction has 1290 states and 5041 transitions. [2021-06-01 17:34:52,155 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:52,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 5041 transitions. [2021-06-01 17:34:52,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:52,157 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:52,157 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:52,157 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable659 [2021-06-01 17:34:52,157 INFO L430 AbstractCegarLoop]: === Iteration 661 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:52,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:52,157 INFO L82 PathProgramCache]: Analyzing trace with hash 292204541, now seen corresponding path program 657 times [2021-06-01 17:34:52,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:52,158 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110473074] [2021-06-01 17:34:52,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:52,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:52,236 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:52,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110473074] [2021-06-01 17:34:52,236 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110473074] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:52,236 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:52,236 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:52,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437170103] [2021-06-01 17:34:52,236 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:52,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:52,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:52,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:52,237 INFO L87 Difference]: Start difference. First operand 1290 states and 5041 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:52,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:52,296 INFO L93 Difference]: Finished difference Result 2811 states and 10439 transitions. [2021-06-01 17:34:52,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:52,296 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:52,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:52,301 INFO L225 Difference]: With dead ends: 2811 [2021-06-01 17:34:52,301 INFO L226 Difference]: Without dead ends: 2526 [2021-06-01 17:34:52,301 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:52,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2526 states. [2021-06-01 17:34:52,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2526 to 1369. [2021-06-01 17:34:52,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1369 states, 1368 states have (on average 3.8801169590643276) internal successors, (5308), 1368 states have internal predecessors, (5308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:52,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 5308 transitions. [2021-06-01 17:34:52,329 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 5308 transitions. Word has length 25 [2021-06-01 17:34:52,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:52,329 INFO L482 AbstractCegarLoop]: Abstraction has 1369 states and 5308 transitions. [2021-06-01 17:34:52,329 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:52,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 5308 transitions. [2021-06-01 17:34:52,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:52,331 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:52,331 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:52,331 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable660 [2021-06-01 17:34:52,331 INFO L430 AbstractCegarLoop]: === Iteration 662 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:52,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:52,331 INFO L82 PathProgramCache]: Analyzing trace with hash -263583747, now seen corresponding path program 658 times [2021-06-01 17:34:52,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:52,331 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375661528] [2021-06-01 17:34:52,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:52,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:52,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:52,407 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:52,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375661528] [2021-06-01 17:34:52,407 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375661528] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:52,408 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:52,408 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:52,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536978886] [2021-06-01 17:34:52,408 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:52,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:52,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:52,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:52,408 INFO L87 Difference]: Start difference. First operand 1369 states and 5308 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:52,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:52,452 INFO L93 Difference]: Finished difference Result 2652 states and 9881 transitions. [2021-06-01 17:34:52,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:52,453 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:52,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:52,457 INFO L225 Difference]: With dead ends: 2652 [2021-06-01 17:34:52,457 INFO L226 Difference]: Without dead ends: 2255 [2021-06-01 17:34:52,457 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:52,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2255 states. [2021-06-01 17:34:52,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2255 to 1290. [2021-06-01 17:34:52,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1289 states have (on average 3.8805275407292474) internal successors, (5002), 1289 states have internal predecessors, (5002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:52,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 5002 transitions. [2021-06-01 17:34:52,483 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 5002 transitions. Word has length 25 [2021-06-01 17:34:52,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:52,483 INFO L482 AbstractCegarLoop]: Abstraction has 1290 states and 5002 transitions. [2021-06-01 17:34:52,483 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:52,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 5002 transitions. [2021-06-01 17:34:52,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:52,485 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:52,485 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:52,485 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable661 [2021-06-01 17:34:52,485 INFO L430 AbstractCegarLoop]: === Iteration 663 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:52,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:52,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1274552155, now seen corresponding path program 659 times [2021-06-01 17:34:52,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:52,485 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328480711] [2021-06-01 17:34:52,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:52,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:52,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:52,560 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:52,560 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328480711] [2021-06-01 17:34:52,560 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328480711] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:52,560 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:52,560 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:52,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106773006] [2021-06-01 17:34:52,561 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:52,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:52,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:52,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:52,561 INFO L87 Difference]: Start difference. First operand 1290 states and 5002 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:52,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:52,617 INFO L93 Difference]: Finished difference Result 2792 states and 10344 transitions. [2021-06-01 17:34:52,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:52,617 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:52,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:52,622 INFO L225 Difference]: With dead ends: 2792 [2021-06-01 17:34:52,622 INFO L226 Difference]: Without dead ends: 2509 [2021-06-01 17:34:52,622 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:52,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2509 states. [2021-06-01 17:34:52,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2509 to 1352. [2021-06-01 17:34:52,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 3.863064396743153) internal successors, (5219), 1351 states have internal predecessors, (5219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:52,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 5219 transitions. [2021-06-01 17:34:52,649 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 5219 transitions. Word has length 25 [2021-06-01 17:34:52,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:52,649 INFO L482 AbstractCegarLoop]: Abstraction has 1352 states and 5219 transitions. [2021-06-01 17:34:52,649 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:52,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 5219 transitions. [2021-06-01 17:34:52,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:52,651 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:52,651 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:52,651 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable662 [2021-06-01 17:34:52,651 INFO L430 AbstractCegarLoop]: === Iteration 664 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:52,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:52,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1082837443, now seen corresponding path program 660 times [2021-06-01 17:34:52,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:52,651 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542591151] [2021-06-01 17:34:52,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:52,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:52,728 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:52,728 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542591151] [2021-06-01 17:34:52,728 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542591151] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:52,728 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:52,728 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:52,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188740752] [2021-06-01 17:34:52,728 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:52,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:52,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:52,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:52,729 INFO L87 Difference]: Start difference. First operand 1352 states and 5219 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:52,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:52,772 INFO L93 Difference]: Finished difference Result 2635 states and 9792 transitions. [2021-06-01 17:34:52,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:52,772 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:52,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:52,777 INFO L225 Difference]: With dead ends: 2635 [2021-06-01 17:34:52,777 INFO L226 Difference]: Without dead ends: 2208 [2021-06-01 17:34:52,777 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 83.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:52,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2208 states. [2021-06-01 17:34:52,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2208 to 1243. [2021-06-01 17:34:52,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1243 states, 1242 states have (on average 3.9033816425120773) internal successors, (4848), 1242 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:52,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 4848 transitions. [2021-06-01 17:34:52,802 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 4848 transitions. Word has length 25 [2021-06-01 17:34:52,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:52,802 INFO L482 AbstractCegarLoop]: Abstraction has 1243 states and 4848 transitions. [2021-06-01 17:34:52,802 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:52,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 4848 transitions. [2021-06-01 17:34:52,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:52,804 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:52,804 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:52,804 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable663 [2021-06-01 17:34:52,804 INFO L430 AbstractCegarLoop]: === Iteration 665 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:52,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:52,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1407215619, now seen corresponding path program 661 times [2021-06-01 17:34:52,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:52,804 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86581027] [2021-06-01 17:34:52,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:52,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:52,899 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:52,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86581027] [2021-06-01 17:34:52,899 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86581027] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:52,899 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:52,899 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:52,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229525959] [2021-06-01 17:34:52,899 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:52,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:52,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:52,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:52,899 INFO L87 Difference]: Start difference. First operand 1243 states and 4848 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:52,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:52,964 INFO L93 Difference]: Finished difference Result 2670 states and 9925 transitions. [2021-06-01 17:34:52,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:52,964 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:52,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:52,969 INFO L225 Difference]: With dead ends: 2670 [2021-06-01 17:34:52,969 INFO L226 Difference]: Without dead ends: 2385 [2021-06-01 17:34:52,969 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:52,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2385 states. [2021-06-01 17:34:52,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2385 to 1313. [2021-06-01 17:34:52,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1313 states, 1312 states have (on average 3.901676829268293) internal successors, (5119), 1312 states have internal predecessors, (5119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:52,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 5119 transitions. [2021-06-01 17:34:52,996 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 5119 transitions. Word has length 25 [2021-06-01 17:34:52,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:52,996 INFO L482 AbstractCegarLoop]: Abstraction has 1313 states and 5119 transitions. [2021-06-01 17:34:52,996 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:52,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 5119 transitions. [2021-06-01 17:34:52,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:52,997 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:52,998 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:52,998 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable664 [2021-06-01 17:34:52,998 INFO L430 AbstractCegarLoop]: === Iteration 666 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:52,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:52,998 INFO L82 PathProgramCache]: Analyzing trace with hash -851427331, now seen corresponding path program 662 times [2021-06-01 17:34:52,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:52,998 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156476825] [2021-06-01 17:34:52,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:53,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:53,090 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:53,090 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156476825] [2021-06-01 17:34:53,090 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156476825] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:53,090 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:53,090 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:53,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073650608] [2021-06-01 17:34:53,090 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:53,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:53,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:53,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:53,091 INFO L87 Difference]: Start difference. First operand 1313 states and 5119 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:53,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:53,152 INFO L93 Difference]: Finished difference Result 2648 states and 9808 transitions. [2021-06-01 17:34:53,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:53,152 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:53,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:53,157 INFO L225 Difference]: With dead ends: 2648 [2021-06-01 17:34:53,157 INFO L226 Difference]: Without dead ends: 2349 [2021-06-01 17:34:53,157 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:53,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2349 states. [2021-06-01 17:34:53,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2349 to 1277. [2021-06-01 17:34:53,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 1276 states have (on average 3.903605015673981) internal successors, (4981), 1276 states have internal predecessors, (4981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:53,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 4981 transitions. [2021-06-01 17:34:53,183 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 4981 transitions. Word has length 25 [2021-06-01 17:34:53,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:53,183 INFO L482 AbstractCegarLoop]: Abstraction has 1277 states and 4981 transitions. [2021-06-01 17:34:53,183 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:53,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 4981 transitions. [2021-06-01 17:34:53,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:53,185 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:53,185 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:53,185 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable665 [2021-06-01 17:34:53,185 INFO L430 AbstractCegarLoop]: === Iteration 667 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:53,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:53,185 INFO L82 PathProgramCache]: Analyzing trace with hash -2024738977, now seen corresponding path program 663 times [2021-06-01 17:34:53,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:53,185 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401470859] [2021-06-01 17:34:53,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:53,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:53,270 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:53,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401470859] [2021-06-01 17:34:53,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401470859] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:53,271 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:53,271 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:53,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293880623] [2021-06-01 17:34:53,271 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:53,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:53,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:53,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:53,271 INFO L87 Difference]: Start difference. First operand 1277 states and 4981 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:53,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:53,330 INFO L93 Difference]: Finished difference Result 2595 states and 9589 transitions. [2021-06-01 17:34:53,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:53,330 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:53,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:53,334 INFO L225 Difference]: With dead ends: 2595 [2021-06-01 17:34:53,334 INFO L226 Difference]: Without dead ends: 2310 [2021-06-01 17:34:53,334 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:53,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2310 states. [2021-06-01 17:34:53,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2310 to 1356. [2021-06-01 17:34:53,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1355 states have (on average 3.873062730627306) internal successors, (5248), 1355 states have internal predecessors, (5248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:53,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 5248 transitions. [2021-06-01 17:34:53,371 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 5248 transitions. Word has length 25 [2021-06-01 17:34:53,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:53,371 INFO L482 AbstractCegarLoop]: Abstraction has 1356 states and 5248 transitions. [2021-06-01 17:34:53,371 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:53,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 5248 transitions. [2021-06-01 17:34:53,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:53,373 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:53,373 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:53,373 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable666 [2021-06-01 17:34:53,373 INFO L430 AbstractCegarLoop]: === Iteration 668 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:53,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:53,373 INFO L82 PathProgramCache]: Analyzing trace with hash -741236739, now seen corresponding path program 664 times [2021-06-01 17:34:53,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:53,373 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348064377] [2021-06-01 17:34:53,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:53,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:53,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:53,458 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:53,458 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348064377] [2021-06-01 17:34:53,458 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348064377] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:53,458 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:53,458 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:53,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326279907] [2021-06-01 17:34:53,458 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:53,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:53,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:53,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:53,458 INFO L87 Difference]: Start difference. First operand 1356 states and 5248 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:53,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:53,502 INFO L93 Difference]: Finished difference Result 2436 states and 9031 transitions. [2021-06-01 17:34:53,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:53,502 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:53,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:53,506 INFO L225 Difference]: With dead ends: 2436 [2021-06-01 17:34:53,506 INFO L226 Difference]: Without dead ends: 2039 [2021-06-01 17:34:53,506 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 90.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:53,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2039 states. [2021-06-01 17:34:53,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2039 to 1277. [2021-06-01 17:34:53,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 1276 states have (on average 3.876959247648903) internal successors, (4947), 1276 states have internal predecessors, (4947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:53,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 4947 transitions. [2021-06-01 17:34:53,530 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 4947 transitions. Word has length 25 [2021-06-01 17:34:53,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:53,530 INFO L482 AbstractCegarLoop]: Abstraction has 1277 states and 4947 transitions. [2021-06-01 17:34:53,530 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:53,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 4947 transitions. [2021-06-01 17:34:53,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:53,532 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:53,532 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:53,532 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable667 [2021-06-01 17:34:53,532 INFO L430 AbstractCegarLoop]: === Iteration 669 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:53,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:53,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1906939901, now seen corresponding path program 665 times [2021-06-01 17:34:53,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:53,532 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713237593] [2021-06-01 17:34:53,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:53,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:53,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:53,622 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:53,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713237593] [2021-06-01 17:34:53,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713237593] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:53,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:53,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:53,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672812658] [2021-06-01 17:34:53,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:53,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:53,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:53,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:53,622 INFO L87 Difference]: Start difference. First operand 1277 states and 4947 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:53,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:53,677 INFO L93 Difference]: Finished difference Result 2354 states and 8755 transitions. [2021-06-01 17:34:53,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:53,677 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:53,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:53,681 INFO L225 Difference]: With dead ends: 2354 [2021-06-01 17:34:53,682 INFO L226 Difference]: Without dead ends: 2091 [2021-06-01 17:34:53,682 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:53,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2091 states. [2021-06-01 17:34:53,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2091 to 1329. [2021-06-01 17:34:53,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1329 states, 1328 states have (on average 3.8637048192771086) internal successors, (5131), 1328 states have internal predecessors, (5131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:53,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 5131 transitions. [2021-06-01 17:34:53,707 INFO L78 Accepts]: Start accepts. Automaton has 1329 states and 5131 transitions. Word has length 25 [2021-06-01 17:34:53,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:53,708 INFO L482 AbstractCegarLoop]: Abstraction has 1329 states and 5131 transitions. [2021-06-01 17:34:53,708 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:53,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1329 states and 5131 transitions. [2021-06-01 17:34:53,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:53,709 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:53,709 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:53,709 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable668 [2021-06-01 17:34:53,709 INFO L430 AbstractCegarLoop]: === Iteration 670 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:53,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:53,710 INFO L82 PathProgramCache]: Analyzing trace with hash 2125291487, now seen corresponding path program 666 times [2021-06-01 17:34:53,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:53,710 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81525035] [2021-06-01 17:34:53,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:53,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:53,817 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:53,817 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81525035] [2021-06-01 17:34:53,817 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81525035] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:53,817 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:53,817 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:53,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064242107] [2021-06-01 17:34:53,817 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:53,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:53,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:53,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:53,817 INFO L87 Difference]: Start difference. First operand 1329 states and 5131 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:53,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:53,869 INFO L93 Difference]: Finished difference Result 2090 states and 7818 transitions. [2021-06-01 17:34:53,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:53,870 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:53,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:53,874 INFO L225 Difference]: With dead ends: 2090 [2021-06-01 17:34:53,875 INFO L226 Difference]: Without dead ends: 1686 [2021-06-01 17:34:53,875 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:53,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2021-06-01 17:34:53,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1243. [2021-06-01 17:34:53,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1243 states, 1242 states have (on average 3.889694041867955) internal successors, (4831), 1242 states have internal predecessors, (4831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:53,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 4831 transitions. [2021-06-01 17:34:53,906 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 4831 transitions. Word has length 25 [2021-06-01 17:34:53,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:53,907 INFO L482 AbstractCegarLoop]: Abstraction has 1243 states and 4831 transitions. [2021-06-01 17:34:53,907 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:53,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 4831 transitions. [2021-06-01 17:34:53,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:53,909 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:53,909 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:53,909 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable669 [2021-06-01 17:34:53,909 INFO L430 AbstractCegarLoop]: === Iteration 671 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:53,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:53,909 INFO L82 PathProgramCache]: Analyzing trace with hash -434819109, now seen corresponding path program 667 times [2021-06-01 17:34:53,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:53,909 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902983462] [2021-06-01 17:34:53,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:53,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:53,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:53,998 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:53,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902983462] [2021-06-01 17:34:53,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902983462] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:53,999 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:53,999 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:53,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913436365] [2021-06-01 17:34:53,999 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:53,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:53,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:53,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:53,999 INFO L87 Difference]: Start difference. First operand 1243 states and 4831 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:54,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:54,067 INFO L93 Difference]: Finished difference Result 2641 states and 9819 transitions. [2021-06-01 17:34:54,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:54,068 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:54,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:54,073 INFO L225 Difference]: With dead ends: 2641 [2021-06-01 17:34:54,074 INFO L226 Difference]: Without dead ends: 2358 [2021-06-01 17:34:54,074 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:54,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2358 states. [2021-06-01 17:34:54,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2358 to 1305. [2021-06-01 17:34:54,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1305 states, 1304 states have (on average 3.8911042944785277) internal successors, (5074), 1304 states have internal predecessors, (5074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:54,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 5074 transitions. [2021-06-01 17:34:54,109 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 5074 transitions. Word has length 25 [2021-06-01 17:34:54,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:54,109 INFO L482 AbstractCegarLoop]: Abstraction has 1305 states and 5074 transitions. [2021-06-01 17:34:54,109 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:54,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 5074 transitions. [2021-06-01 17:34:54,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:54,111 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:54,111 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:54,111 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable670 [2021-06-01 17:34:54,111 INFO L430 AbstractCegarLoop]: === Iteration 672 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:54,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:54,111 INFO L82 PathProgramCache]: Analyzing trace with hash -641627075, now seen corresponding path program 668 times [2021-06-01 17:34:54,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:54,111 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255516086] [2021-06-01 17:34:54,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:54,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:54,188 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:54,188 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255516086] [2021-06-01 17:34:54,189 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255516086] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:54,189 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:54,189 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:54,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834363043] [2021-06-01 17:34:54,189 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:54,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:54,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:54,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:54,193 INFO L87 Difference]: Start difference. First operand 1305 states and 5074 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:54,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:54,259 INFO L93 Difference]: Finished difference Result 2621 states and 9707 transitions. [2021-06-01 17:34:54,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:54,259 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:54,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:54,263 INFO L225 Difference]: With dead ends: 2621 [2021-06-01 17:34:54,263 INFO L226 Difference]: Without dead ends: 2322 [2021-06-01 17:34:54,263 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:54,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2322 states. [2021-06-01 17:34:54,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2322 to 1269. [2021-06-01 17:34:54,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 1268 states have (on average 3.892744479495268) internal successors, (4936), 1268 states have internal predecessors, (4936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:54,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 4936 transitions. [2021-06-01 17:34:54,289 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 4936 transitions. Word has length 25 [2021-06-01 17:34:54,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:54,289 INFO L482 AbstractCegarLoop]: Abstraction has 1269 states and 4936 transitions. [2021-06-01 17:34:54,289 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:54,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 4936 transitions. [2021-06-01 17:34:54,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:54,291 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:54,291 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:54,291 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable671 [2021-06-01 17:34:54,291 INFO L430 AbstractCegarLoop]: === Iteration 673 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:54,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:54,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1052342467, now seen corresponding path program 669 times [2021-06-01 17:34:54,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:54,291 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242316210] [2021-06-01 17:34:54,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:54,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:54,368 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:54,368 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242316210] [2021-06-01 17:34:54,368 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242316210] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:54,368 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:54,368 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:54,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714398092] [2021-06-01 17:34:54,368 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:54,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:54,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:54,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:54,368 INFO L87 Difference]: Start difference. First operand 1269 states and 4936 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:54,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:54,425 INFO L93 Difference]: Finished difference Result 2568 states and 9488 transitions. [2021-06-01 17:34:54,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:54,425 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:54,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:54,430 INFO L225 Difference]: With dead ends: 2568 [2021-06-01 17:34:54,430 INFO L226 Difference]: Without dead ends: 2285 [2021-06-01 17:34:54,430 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:54,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2021-06-01 17:34:54,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 1331. [2021-06-01 17:34:54,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1331 states, 1330 states have (on average 3.874436090225564) internal successors, (5153), 1330 states have internal predecessors, (5153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:54,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 5153 transitions. [2021-06-01 17:34:54,456 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 5153 transitions. Word has length 25 [2021-06-01 17:34:54,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:54,456 INFO L482 AbstractCegarLoop]: Abstraction has 1331 states and 5153 transitions. [2021-06-01 17:34:54,456 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:54,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 5153 transitions. [2021-06-01 17:34:54,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:54,457 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:54,457 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:54,457 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable672 [2021-06-01 17:34:54,457 INFO L430 AbstractCegarLoop]: === Iteration 674 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:54,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:54,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1570441539, now seen corresponding path program 670 times [2021-06-01 17:34:54,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:54,458 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120599886] [2021-06-01 17:34:54,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:54,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:54,533 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:54,533 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120599886] [2021-06-01 17:34:54,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120599886] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:54,533 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:54,533 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:54,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895803734] [2021-06-01 17:34:54,533 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:54,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:54,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:54,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:54,534 INFO L87 Difference]: Start difference. First operand 1331 states and 5153 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:54,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:54,580 INFO L93 Difference]: Finished difference Result 2411 states and 8936 transitions. [2021-06-01 17:34:54,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:54,580 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:54,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:54,584 INFO L225 Difference]: With dead ends: 2411 [2021-06-01 17:34:54,584 INFO L226 Difference]: Without dead ends: 2031 [2021-06-01 17:34:54,584 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:54,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2031 states. [2021-06-01 17:34:54,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2031 to 1269. [2021-06-01 17:34:54,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 1268 states have (on average 3.8722397476340693) internal successors, (4910), 1268 states have internal predecessors, (4910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:54,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 4910 transitions. [2021-06-01 17:34:54,609 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 4910 transitions. Word has length 25 [2021-06-01 17:34:54,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:54,609 INFO L482 AbstractCegarLoop]: Abstraction has 1269 states and 4910 transitions. [2021-06-01 17:34:54,609 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:54,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 4910 transitions. [2021-06-01 17:34:54,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:54,611 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:54,611 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:54,611 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable673 [2021-06-01 17:34:54,611 INFO L430 AbstractCegarLoop]: === Iteration 675 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:54,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:54,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1649701535, now seen corresponding path program 671 times [2021-06-01 17:34:54,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:54,611 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146149541] [2021-06-01 17:34:54,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:54,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:54,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:54,718 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:54,718 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146149541] [2021-06-01 17:34:54,718 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146149541] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:54,718 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:54,718 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:54,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153761278] [2021-06-01 17:34:54,718 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:54,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:54,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:54,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:54,719 INFO L87 Difference]: Start difference. First operand 1269 states and 4910 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:54,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:54,786 INFO L93 Difference]: Finished difference Result 2346 states and 8718 transitions. [2021-06-01 17:34:54,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:54,787 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:54,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:54,792 INFO L225 Difference]: With dead ends: 2346 [2021-06-01 17:34:54,792 INFO L226 Difference]: Without dead ends: 2083 [2021-06-01 17:34:54,792 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 131.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:54,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2021-06-01 17:34:54,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 1321. [2021-06-01 17:34:54,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1321 states, 1320 states have (on average 3.859090909090909) internal successors, (5094), 1320 states have internal predecessors, (5094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:54,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 5094 transitions. [2021-06-01 17:34:54,824 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 5094 transitions. Word has length 25 [2021-06-01 17:34:54,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:54,825 INFO L482 AbstractCegarLoop]: Abstraction has 1321 states and 5094 transitions. [2021-06-01 17:34:54,825 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:54,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 5094 transitions. [2021-06-01 17:34:54,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:54,826 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:54,826 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:54,826 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable674 [2021-06-01 17:34:54,826 INFO L430 AbstractCegarLoop]: === Iteration 676 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:54,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:54,826 INFO L82 PathProgramCache]: Analyzing trace with hash -171333891, now seen corresponding path program 672 times [2021-06-01 17:34:54,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:54,827 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896783893] [2021-06-01 17:34:54,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:54,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:54,914 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:54,914 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896783893] [2021-06-01 17:34:54,914 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896783893] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:54,914 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:54,914 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:54,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887718038] [2021-06-01 17:34:54,914 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:54,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:54,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:54,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:54,914 INFO L87 Difference]: Start difference. First operand 1321 states and 5094 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:54,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:54,956 INFO L93 Difference]: Finished difference Result 2082 states and 7781 transitions. [2021-06-01 17:34:54,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:54,956 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:54,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:54,959 INFO L225 Difference]: With dead ends: 2082 [2021-06-01 17:34:54,959 INFO L226 Difference]: Without dead ends: 1665 [2021-06-01 17:34:54,960 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:54,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2021-06-01 17:34:54,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1222. [2021-06-01 17:34:54,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 1221 states have (on average 3.909090909090909) internal successors, (4773), 1221 states have internal predecessors, (4773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:54,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 4773 transitions. [2021-06-01 17:34:54,981 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 4773 transitions. Word has length 25 [2021-06-01 17:34:54,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:54,982 INFO L482 AbstractCegarLoop]: Abstraction has 1222 states and 4773 transitions. [2021-06-01 17:34:54,982 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:54,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 4773 transitions. [2021-06-01 17:34:54,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:54,983 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:54,983 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:54,983 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable675 [2021-06-01 17:34:54,983 INFO L430 AbstractCegarLoop]: === Iteration 677 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:54,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:54,983 INFO L82 PathProgramCache]: Analyzing trace with hash 739430491, now seen corresponding path program 673 times [2021-06-01 17:34:54,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:54,983 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178802154] [2021-06-01 17:34:54,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:54,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:55,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:55,057 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:55,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178802154] [2021-06-01 17:34:55,057 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178802154] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:55,057 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:55,057 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:55,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261738873] [2021-06-01 17:34:55,057 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:55,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:55,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:55,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:55,058 INFO L87 Difference]: Start difference. First operand 1222 states and 4773 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:55,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:55,113 INFO L93 Difference]: Finished difference Result 2413 states and 8886 transitions. [2021-06-01 17:34:55,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:55,113 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:55,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:55,117 INFO L225 Difference]: With dead ends: 2413 [2021-06-01 17:34:55,117 INFO L226 Difference]: Without dead ends: 2128 [2021-06-01 17:34:55,117 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:55,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2128 states. [2021-06-01 17:34:55,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2128 to 1250. [2021-06-01 17:34:55,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1249 states have (on average 3.8919135308246595) internal successors, (4861), 1249 states have internal predecessors, (4861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:55,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 4861 transitions. [2021-06-01 17:34:55,143 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 4861 transitions. Word has length 25 [2021-06-01 17:34:55,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:55,143 INFO L482 AbstractCegarLoop]: Abstraction has 1250 states and 4861 transitions. [2021-06-01 17:34:55,143 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:55,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 4861 transitions. [2021-06-01 17:34:55,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:55,145 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:55,145 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:55,145 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable676 [2021-06-01 17:34:55,145 INFO L430 AbstractCegarLoop]: === Iteration 678 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:55,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:55,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1931896923, now seen corresponding path program 674 times [2021-06-01 17:34:55,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:55,145 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093276230] [2021-06-01 17:34:55,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:55,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:55,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:55,220 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:55,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093276230] [2021-06-01 17:34:55,220 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093276230] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:55,220 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:55,221 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:55,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925537902] [2021-06-01 17:34:55,221 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:55,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:55,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:55,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:55,221 INFO L87 Difference]: Start difference. First operand 1250 states and 4861 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:55,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:55,277 INFO L93 Difference]: Finished difference Result 2375 states and 8705 transitions. [2021-06-01 17:34:55,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:55,278 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:55,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:55,281 INFO L225 Difference]: With dead ends: 2375 [2021-06-01 17:34:55,281 INFO L226 Difference]: Without dead ends: 2100 [2021-06-01 17:34:55,282 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:55,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2021-06-01 17:34:55,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 1222. [2021-06-01 17:34:55,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 1221 states have (on average 3.8992628992628995) internal successors, (4761), 1221 states have internal predecessors, (4761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:55,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 4761 transitions. [2021-06-01 17:34:55,306 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 4761 transitions. Word has length 25 [2021-06-01 17:34:55,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:55,306 INFO L482 AbstractCegarLoop]: Abstraction has 1222 states and 4761 transitions. [2021-06-01 17:34:55,306 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:55,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 4761 transitions. [2021-06-01 17:34:55,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:55,307 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:55,307 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:55,307 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable677 [2021-06-01 17:34:55,307 INFO L430 AbstractCegarLoop]: === Iteration 679 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:55,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:55,308 INFO L82 PathProgramCache]: Analyzing trace with hash 258528445, now seen corresponding path program 675 times [2021-06-01 17:34:55,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:55,308 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174331452] [2021-06-01 17:34:55,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:55,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:55,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:55,393 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:55,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174331452] [2021-06-01 17:34:55,393 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174331452] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:55,393 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:55,393 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:55,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982539927] [2021-06-01 17:34:55,394 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:55,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:55,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:55,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:55,394 INFO L87 Difference]: Start difference. First operand 1222 states and 4761 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:55,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:55,449 INFO L93 Difference]: Finished difference Result 2437 states and 8986 transitions. [2021-06-01 17:34:55,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:55,449 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:55,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:55,453 INFO L225 Difference]: With dead ends: 2437 [2021-06-01 17:34:55,453 INFO L226 Difference]: Without dead ends: 2152 [2021-06-01 17:34:55,453 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:55,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2021-06-01 17:34:55,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 1258. [2021-06-01 17:34:55,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1257 states have (on average 3.883054892601432) internal successors, (4881), 1257 states have internal predecessors, (4881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:55,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 4881 transitions. [2021-06-01 17:34:55,478 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 4881 transitions. Word has length 25 [2021-06-01 17:34:55,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:55,478 INFO L482 AbstractCegarLoop]: Abstraction has 1258 states and 4881 transitions. [2021-06-01 17:34:55,478 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:55,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 4881 transitions. [2021-06-01 17:34:55,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:55,480 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:55,480 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:55,480 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable678 [2021-06-01 17:34:55,480 INFO L430 AbstractCegarLoop]: === Iteration 680 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:55,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:55,480 INFO L82 PathProgramCache]: Analyzing trace with hash -667121573, now seen corresponding path program 676 times [2021-06-01 17:34:55,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:55,480 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304621541] [2021-06-01 17:34:55,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:55,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:55,564 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:55,564 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304621541] [2021-06-01 17:34:55,564 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304621541] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:55,564 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:55,564 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:55,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978927068] [2021-06-01 17:34:55,564 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:55,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:55,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:55,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:55,565 INFO L87 Difference]: Start difference. First operand 1258 states and 4881 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:55,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:55,621 INFO L93 Difference]: Finished difference Result 2415 states and 8869 transitions. [2021-06-01 17:34:55,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:55,621 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:55,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:55,625 INFO L225 Difference]: With dead ends: 2415 [2021-06-01 17:34:55,625 INFO L226 Difference]: Without dead ends: 2116 [2021-06-01 17:34:55,626 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:55,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2116 states. [2021-06-01 17:34:55,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2116 to 1222. [2021-06-01 17:34:55,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 1221 states have (on average 3.8894348894348894) internal successors, (4749), 1221 states have internal predecessors, (4749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:55,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 4749 transitions. [2021-06-01 17:34:55,650 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 4749 transitions. Word has length 25 [2021-06-01 17:34:55,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:55,650 INFO L482 AbstractCegarLoop]: Abstraction has 1222 states and 4749 transitions. [2021-06-01 17:34:55,650 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:55,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 4749 transitions. [2021-06-01 17:34:55,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:55,651 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:55,651 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:55,651 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable679 [2021-06-01 17:34:55,651 INFO L430 AbstractCegarLoop]: === Iteration 681 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:55,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:55,652 INFO L82 PathProgramCache]: Analyzing trace with hash -826470309, now seen corresponding path program 677 times [2021-06-01 17:34:55,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:55,652 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394109054] [2021-06-01 17:34:55,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:55,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:55,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:55,726 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:55,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394109054] [2021-06-01 17:34:55,726 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394109054] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:55,726 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:55,726 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:55,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040990784] [2021-06-01 17:34:55,726 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:55,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:55,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:55,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:55,726 INFO L87 Difference]: Start difference. First operand 1222 states and 4749 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:55,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:55,780 INFO L93 Difference]: Finished difference Result 2349 states and 8612 transitions. [2021-06-01 17:34:55,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:55,780 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:55,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:55,784 INFO L225 Difference]: With dead ends: 2349 [2021-06-01 17:34:55,785 INFO L226 Difference]: Without dead ends: 2102 [2021-06-01 17:34:55,785 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:55,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2102 states. [2021-06-01 17:34:55,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2102 to 1246. [2021-06-01 17:34:55,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1246 states, 1245 states have (on average 3.8755020080321283) internal successors, (4825), 1245 states have internal predecessors, (4825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:55,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 4825 transitions. [2021-06-01 17:34:55,809 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 4825 transitions. Word has length 25 [2021-06-01 17:34:55,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:55,809 INFO L482 AbstractCegarLoop]: Abstraction has 1246 states and 4825 transitions. [2021-06-01 17:34:55,809 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:55,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 4825 transitions. [2021-06-01 17:34:55,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:55,811 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:55,811 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:55,811 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable680 [2021-06-01 17:34:55,811 INFO L430 AbstractCegarLoop]: === Iteration 682 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:55,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:55,811 INFO L82 PathProgramCache]: Analyzing trace with hash 254592317, now seen corresponding path program 678 times [2021-06-01 17:34:55,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:55,811 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409779639] [2021-06-01 17:34:55,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:55,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:55,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:55,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409779639] [2021-06-01 17:34:55,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409779639] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:55,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:55,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:55,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149656161] [2021-06-01 17:34:55,893 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:55,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:55,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:55,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:55,894 INFO L87 Difference]: Start difference. First operand 1246 states and 4825 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:55,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:55,952 INFO L93 Difference]: Finished difference Result 2365 states and 8660 transitions. [2021-06-01 17:34:55,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:55,952 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:55,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:55,956 INFO L225 Difference]: With dead ends: 2365 [2021-06-01 17:34:55,956 INFO L226 Difference]: Without dead ends: 2066 [2021-06-01 17:34:55,956 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:55,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2066 states. [2021-06-01 17:34:55,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2066 to 1210. [2021-06-01 17:34:55,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 1209 states have (on average 3.8966087675765095) internal successors, (4711), 1209 states have internal predecessors, (4711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:55,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 4711 transitions. [2021-06-01 17:34:55,991 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 4711 transitions. Word has length 25 [2021-06-01 17:34:55,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:55,991 INFO L482 AbstractCegarLoop]: Abstraction has 1210 states and 4711 transitions. [2021-06-01 17:34:55,992 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:55,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 4711 transitions. [2021-06-01 17:34:55,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:55,993 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:55,993 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:55,993 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable681 [2021-06-01 17:34:55,993 INFO L430 AbstractCegarLoop]: === Iteration 683 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:55,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:55,993 INFO L82 PathProgramCache]: Analyzing trace with hash 4970301, now seen corresponding path program 679 times [2021-06-01 17:34:55,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:55,994 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175777070] [2021-06-01 17:34:55,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:56,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:56,067 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:56,067 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175777070] [2021-06-01 17:34:56,067 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175777070] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:56,067 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:56,067 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:56,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207084631] [2021-06-01 17:34:56,068 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:56,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:56,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:56,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:56,068 INFO L87 Difference]: Start difference. First operand 1210 states and 4711 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:56,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:56,122 INFO L93 Difference]: Finished difference Result 2448 states and 8983 transitions. [2021-06-01 17:34:56,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:56,122 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:56,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:56,126 INFO L225 Difference]: With dead ends: 2448 [2021-06-01 17:34:56,126 INFO L226 Difference]: Without dead ends: 2163 [2021-06-01 17:34:56,126 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:56,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2163 states. [2021-06-01 17:34:56,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2163 to 1210. [2021-06-01 17:34:56,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 1209 states have (on average 3.8734491315136474) internal successors, (4683), 1209 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:56,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 4683 transitions. [2021-06-01 17:34:56,150 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 4683 transitions. Word has length 25 [2021-06-01 17:34:56,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:56,150 INFO L482 AbstractCegarLoop]: Abstraction has 1210 states and 4683 transitions. [2021-06-01 17:34:56,150 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:56,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 4683 transitions. [2021-06-01 17:34:56,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:56,152 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:56,152 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:56,152 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable682 [2021-06-01 17:34:56,152 INFO L430 AbstractCegarLoop]: === Iteration 684 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:56,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:56,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1197436733, now seen corresponding path program 680 times [2021-06-01 17:34:56,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:56,152 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521254566] [2021-06-01 17:34:56,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:56,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:56,230 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:56,230 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521254566] [2021-06-01 17:34:56,230 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521254566] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:56,230 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:56,230 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:56,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245740525] [2021-06-01 17:34:56,230 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:56,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:56,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:56,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:56,230 INFO L87 Difference]: Start difference. First operand 1210 states and 4683 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:56,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:56,287 INFO L93 Difference]: Finished difference Result 2410 states and 8802 transitions. [2021-06-01 17:34:56,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:56,288 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:56,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:56,291 INFO L225 Difference]: With dead ends: 2410 [2021-06-01 17:34:56,292 INFO L226 Difference]: Without dead ends: 2135 [2021-06-01 17:34:56,292 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:56,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2135 states. [2021-06-01 17:34:56,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2135 to 1182. [2021-06-01 17:34:56,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 1181 states have (on average 3.8789161727349706) internal successors, (4581), 1181 states have internal predecessors, (4581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:56,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 4581 transitions. [2021-06-01 17:34:56,316 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 4581 transitions. Word has length 25 [2021-06-01 17:34:56,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:56,316 INFO L482 AbstractCegarLoop]: Abstraction has 1182 states and 4581 transitions. [2021-06-01 17:34:56,316 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:56,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 4581 transitions. [2021-06-01 17:34:56,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:56,317 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:56,317 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:56,317 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable683 [2021-06-01 17:34:56,317 INFO L430 AbstractCegarLoop]: === Iteration 685 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:56,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:56,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1021026109, now seen corresponding path program 681 times [2021-06-01 17:34:56,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:56,318 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787075974] [2021-06-01 17:34:56,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:56,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:56,394 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:56,394 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787075974] [2021-06-01 17:34:56,394 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787075974] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:56,394 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:56,394 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:56,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67076737] [2021-06-01 17:34:56,394 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:56,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:56,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:56,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:56,395 INFO L87 Difference]: Start difference. First operand 1182 states and 4581 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:56,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:56,450 INFO L93 Difference]: Finished difference Result 2476 states and 9077 transitions. [2021-06-01 17:34:56,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:56,451 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:56,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:56,454 INFO L225 Difference]: With dead ends: 2476 [2021-06-01 17:34:56,455 INFO L226 Difference]: Without dead ends: 2191 [2021-06-01 17:34:56,455 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:56,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2191 states. [2021-06-01 17:34:56,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2191 to 1261. [2021-06-01 17:34:56,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1261 states, 1260 states have (on average 3.8476190476190477) internal successors, (4848), 1260 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:56,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 4848 transitions. [2021-06-01 17:34:56,479 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 4848 transitions. Word has length 25 [2021-06-01 17:34:56,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:56,479 INFO L482 AbstractCegarLoop]: Abstraction has 1261 states and 4848 transitions. [2021-06-01 17:34:56,479 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:56,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 4848 transitions. [2021-06-01 17:34:56,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:56,481 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:56,481 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:56,481 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable684 [2021-06-01 17:34:56,481 INFO L430 AbstractCegarLoop]: === Iteration 686 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:56,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:56,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1035245659, now seen corresponding path program 682 times [2021-06-01 17:34:56,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:56,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012288969] [2021-06-01 17:34:56,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:56,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:56,557 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:56,557 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012288969] [2021-06-01 17:34:56,557 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012288969] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:56,557 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:56,557 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:56,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621726020] [2021-06-01 17:34:56,557 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:56,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:56,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:56,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:56,557 INFO L87 Difference]: Start difference. First operand 1261 states and 4848 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:56,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:56,599 INFO L93 Difference]: Finished difference Result 2317 states and 8519 transitions. [2021-06-01 17:34:56,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:56,599 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:56,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:56,603 INFO L225 Difference]: With dead ends: 2317 [2021-06-01 17:34:56,603 INFO L226 Difference]: Without dead ends: 1920 [2021-06-01 17:34:56,603 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 81.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:56,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1920 states. [2021-06-01 17:34:56,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1920 to 1182. [2021-06-01 17:34:56,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 1181 states have (on average 3.8535139712108384) internal successors, (4551), 1181 states have internal predecessors, (4551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:56,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 4551 transitions. [2021-06-01 17:34:56,625 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 4551 transitions. Word has length 25 [2021-06-01 17:34:56,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:56,625 INFO L482 AbstractCegarLoop]: Abstraction has 1182 states and 4551 transitions. [2021-06-01 17:34:56,625 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:56,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 4551 transitions. [2021-06-01 17:34:56,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:56,627 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:56,627 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:56,627 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable685 [2021-06-01 17:34:56,627 INFO L430 AbstractCegarLoop]: === Iteration 687 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:56,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:56,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1987473499, now seen corresponding path program 683 times [2021-06-01 17:34:56,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:56,627 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772246017] [2021-06-01 17:34:56,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:56,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:56,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:56,711 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:56,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772246017] [2021-06-01 17:34:56,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772246017] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:56,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:56,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:56,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063683358] [2021-06-01 17:34:56,711 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:56,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:56,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:56,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:56,711 INFO L87 Difference]: Start difference. First operand 1182 states and 4551 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:56,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:56,767 INFO L93 Difference]: Finished difference Result 2403 states and 8760 transitions. [2021-06-01 17:34:56,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:56,767 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:56,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:56,771 INFO L225 Difference]: With dead ends: 2403 [2021-06-01 17:34:56,771 INFO L226 Difference]: Without dead ends: 2156 [2021-06-01 17:34:56,771 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:56,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2156 states. [2021-06-01 17:34:56,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2156 to 1226. [2021-06-01 17:34:56,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 1225 states have (on average 3.8391836734693876) internal successors, (4703), 1225 states have internal predecessors, (4703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:56,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 4703 transitions. [2021-06-01 17:34:56,795 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 4703 transitions. Word has length 25 [2021-06-01 17:34:56,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:56,795 INFO L482 AbstractCegarLoop]: Abstraction has 1226 states and 4703 transitions. [2021-06-01 17:34:56,795 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:56,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 4703 transitions. [2021-06-01 17:34:56,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:56,796 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:56,796 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:56,797 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable686 [2021-06-01 17:34:56,797 INFO L430 AbstractCegarLoop]: === Iteration 688 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:56,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:56,797 INFO L82 PathProgramCache]: Analyzing trace with hash 917954493, now seen corresponding path program 684 times [2021-06-01 17:34:56,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:56,797 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186513012] [2021-06-01 17:34:56,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:56,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:56,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:56,891 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:56,891 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186513012] [2021-06-01 17:34:56,892 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186513012] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:56,892 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:56,892 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:56,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132667121] [2021-06-01 17:34:56,892 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:56,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:56,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:56,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:56,892 INFO L87 Difference]: Start difference. First operand 1226 states and 4703 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:56,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:56,939 INFO L93 Difference]: Finished difference Result 2282 states and 8374 transitions. [2021-06-01 17:34:56,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:56,939 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:56,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:56,942 INFO L225 Difference]: With dead ends: 2282 [2021-06-01 17:34:56,942 INFO L226 Difference]: Without dead ends: 1890 [2021-06-01 17:34:56,942 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 97.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:56,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1890 states. [2021-06-01 17:34:56,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1890 to 1152. [2021-06-01 17:34:56,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 1151 states have (on average 3.8679409209383144) internal successors, (4452), 1151 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:56,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 4452 transitions. [2021-06-01 17:34:56,964 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 4452 transitions. Word has length 25 [2021-06-01 17:34:56,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:56,964 INFO L482 AbstractCegarLoop]: Abstraction has 1152 states and 4452 transitions. [2021-06-01 17:34:56,964 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:56,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 4452 transitions. [2021-06-01 17:34:56,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:56,966 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:56,966 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:56,966 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable687 [2021-06-01 17:34:56,966 INFO L430 AbstractCegarLoop]: === Iteration 689 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:56,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:56,966 INFO L82 PathProgramCache]: Analyzing trace with hash -784415969, now seen corresponding path program 685 times [2021-06-01 17:34:56,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:56,966 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689706694] [2021-06-01 17:34:56,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:57,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:57,058 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:57,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689706694] [2021-06-01 17:34:57,058 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689706694] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:57,058 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:57,058 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:57,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558448463] [2021-06-01 17:34:57,058 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:57,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:57,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:57,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:57,059 INFO L87 Difference]: Start difference. First operand 1152 states and 4452 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:57,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:57,117 INFO L93 Difference]: Finished difference Result 2336 states and 8551 transitions. [2021-06-01 17:34:57,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:57,118 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:57,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:57,121 INFO L225 Difference]: With dead ends: 2336 [2021-06-01 17:34:57,122 INFO L226 Difference]: Without dead ends: 2051 [2021-06-01 17:34:57,122 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:57,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2051 states. [2021-06-01 17:34:57,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2051 to 1152. [2021-06-01 17:34:57,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 1151 states have (on average 3.8366637706342313) internal successors, (4416), 1151 states have internal predecessors, (4416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:57,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 4416 transitions. [2021-06-01 17:34:57,144 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 4416 transitions. Word has length 25 [2021-06-01 17:34:57,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:57,144 INFO L482 AbstractCegarLoop]: Abstraction has 1152 states and 4416 transitions. [2021-06-01 17:34:57,144 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:57,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 4416 transitions. [2021-06-01 17:34:57,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:57,145 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:57,145 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:57,146 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable688 [2021-06-01 17:34:57,146 INFO L430 AbstractCegarLoop]: === Iteration 690 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:57,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:57,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1710065987, now seen corresponding path program 686 times [2021-06-01 17:34:57,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:57,146 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353647974] [2021-06-01 17:34:57,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:57,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:57,239 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:57,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353647974] [2021-06-01 17:34:57,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353647974] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:57,239 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:57,239 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:57,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911605624] [2021-06-01 17:34:57,239 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:57,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:57,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:57,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:57,239 INFO L87 Difference]: Start difference. First operand 1152 states and 4416 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:57,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:57,298 INFO L93 Difference]: Finished difference Result 2314 states and 8434 transitions. [2021-06-01 17:34:57,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:57,298 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:57,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:57,302 INFO L225 Difference]: With dead ends: 2314 [2021-06-01 17:34:57,302 INFO L226 Difference]: Without dead ends: 2015 [2021-06-01 17:34:57,302 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:57,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2015 states. [2021-06-01 17:34:57,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2015 to 1116. [2021-06-01 17:34:57,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 1115 states have (on average 3.8367713004484303) internal successors, (4278), 1115 states have internal predecessors, (4278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:57,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 4278 transitions. [2021-06-01 17:34:57,323 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 4278 transitions. Word has length 25 [2021-06-01 17:34:57,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:57,323 INFO L482 AbstractCegarLoop]: Abstraction has 1116 states and 4278 transitions. [2021-06-01 17:34:57,323 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:57,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 4278 transitions. [2021-06-01 17:34:57,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:57,325 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:57,325 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:57,325 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable689 [2021-06-01 17:34:57,325 INFO L430 AbstractCegarLoop]: === Iteration 691 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:57,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:57,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1547196413, now seen corresponding path program 687 times [2021-06-01 17:34:57,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:57,325 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80100368] [2021-06-01 17:34:57,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:57,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:57,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:57,410 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:57,410 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80100368] [2021-06-01 17:34:57,410 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80100368] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:57,410 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:57,410 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:57,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312794144] [2021-06-01 17:34:57,410 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:57,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:57,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:57,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:57,410 INFO L87 Difference]: Start difference. First operand 1116 states and 4278 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:57,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:57,467 INFO L93 Difference]: Finished difference Result 2261 states and 8215 transitions. [2021-06-01 17:34:57,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:57,467 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:57,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:57,471 INFO L225 Difference]: With dead ends: 2261 [2021-06-01 17:34:57,471 INFO L226 Difference]: Without dead ends: 1976 [2021-06-01 17:34:57,471 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:57,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2021-06-01 17:34:57,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1022. [2021-06-01 17:34:57,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1022 states, 1021 states have (on average 3.7943192948090108) internal successors, (3874), 1021 states have internal predecessors, (3874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:57,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 3874 transitions. [2021-06-01 17:34:57,491 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 3874 transitions. Word has length 25 [2021-06-01 17:34:57,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:57,491 INFO L482 AbstractCegarLoop]: Abstraction has 1022 states and 3874 transitions. [2021-06-01 17:34:57,491 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:57,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 3874 transitions. [2021-06-01 17:34:57,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:57,492 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:57,492 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:57,492 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable690 [2021-06-01 17:34:57,492 INFO L430 AbstractCegarLoop]: === Iteration 692 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:57,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:57,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1550119875, now seen corresponding path program 688 times [2021-06-01 17:34:57,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:57,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425668764] [2021-06-01 17:34:57,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:57,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:57,576 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:57,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425668764] [2021-06-01 17:34:57,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425668764] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:57,577 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:57,577 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:57,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359121356] [2021-06-01 17:34:57,577 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:57,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:57,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:57,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:57,577 INFO L87 Difference]: Start difference. First operand 1022 states and 3874 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:57,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:57,620 INFO L93 Difference]: Finished difference Result 2102 states and 7657 transitions. [2021-06-01 17:34:57,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:57,621 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:57,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:57,624 INFO L225 Difference]: With dead ends: 2102 [2021-06-01 17:34:57,624 INFO L226 Difference]: Without dead ends: 1705 [2021-06-01 17:34:57,624 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 90.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:57,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2021-06-01 17:34:57,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 943. [2021-06-01 17:34:57,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 943 states, 942 states have (on average 3.7929936305732483) internal successors, (3573), 942 states have internal predecessors, (3573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:57,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 3573 transitions. [2021-06-01 17:34:57,641 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 3573 transitions. Word has length 25 [2021-06-01 17:34:57,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:57,642 INFO L482 AbstractCegarLoop]: Abstraction has 943 states and 3573 transitions. [2021-06-01 17:34:57,642 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:57,642 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 3573 transitions. [2021-06-01 17:34:57,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:57,643 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:57,643 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:57,643 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable691 [2021-06-01 17:34:57,643 INFO L430 AbstractCegarLoop]: === Iteration 693 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:57,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:57,643 INFO L82 PathProgramCache]: Analyzing trace with hash -929980325, now seen corresponding path program 689 times [2021-06-01 17:34:57,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:57,643 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636738542] [2021-06-01 17:34:57,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:57,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:57,733 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:57,733 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636738542] [2021-06-01 17:34:57,733 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636738542] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:57,733 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:57,733 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:57,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49100642] [2021-06-01 17:34:57,733 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:57,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:57,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:57,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:57,733 INFO L87 Difference]: Start difference. First operand 943 states and 3573 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:57,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:57,793 INFO L93 Difference]: Finished difference Result 2020 states and 7381 transitions. [2021-06-01 17:34:57,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:57,793 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:57,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:57,796 INFO L225 Difference]: With dead ends: 2020 [2021-06-01 17:34:57,797 INFO L226 Difference]: Without dead ends: 1757 [2021-06-01 17:34:57,797 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:57,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1757 states. [2021-06-01 17:34:57,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1757 to 995. [2021-06-01 17:34:57,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 994 states have (on average 3.7796780684104627) internal successors, (3757), 994 states have internal predecessors, (3757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:57,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 3757 transitions. [2021-06-01 17:34:57,815 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 3757 transitions. Word has length 25 [2021-06-01 17:34:57,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:57,815 INFO L482 AbstractCegarLoop]: Abstraction has 995 states and 3757 transitions. [2021-06-01 17:34:57,815 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:57,815 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 3757 transitions. [2021-06-01 17:34:57,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:57,816 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:57,816 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:57,816 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable692 [2021-06-01 17:34:57,816 INFO L430 AbstractCegarLoop]: === Iteration 694 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:57,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:57,817 INFO L82 PathProgramCache]: Analyzing trace with hash -711628739, now seen corresponding path program 690 times [2021-06-01 17:34:57,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:57,817 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055389818] [2021-06-01 17:34:57,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:57,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:57,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:57,909 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:57,909 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055389818] [2021-06-01 17:34:57,909 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055389818] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:57,909 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:57,909 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:57,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604467116] [2021-06-01 17:34:57,909 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:57,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:57,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:57,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:57,910 INFO L87 Difference]: Start difference. First operand 995 states and 3757 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:57,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:57,952 INFO L93 Difference]: Finished difference Result 1756 states and 6444 transitions. [2021-06-01 17:34:57,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:57,952 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:57,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:57,955 INFO L225 Difference]: With dead ends: 1756 [2021-06-01 17:34:57,955 INFO L226 Difference]: Without dead ends: 1352 [2021-06-01 17:34:57,955 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 99.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:57,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2021-06-01 17:34:57,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 909. [2021-06-01 17:34:57,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 908 states have (on average 3.8105726872246697) internal successors, (3460), 908 states have internal predecessors, (3460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:57,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 3460 transitions. [2021-06-01 17:34:57,971 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 3460 transitions. Word has length 25 [2021-06-01 17:34:57,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:57,971 INFO L482 AbstractCegarLoop]: Abstraction has 909 states and 3460 transitions. [2021-06-01 17:34:57,971 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:57,971 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 3460 transitions. [2021-06-01 17:34:57,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:57,972 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:57,972 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:57,972 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable693 [2021-06-01 17:34:57,972 INFO L430 AbstractCegarLoop]: === Iteration 695 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:57,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:57,972 INFO L82 PathProgramCache]: Analyzing trace with hash -30381989, now seen corresponding path program 691 times [2021-06-01 17:34:57,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:57,972 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088383132] [2021-06-01 17:34:57,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:58,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:58,054 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:58,054 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088383132] [2021-06-01 17:34:58,054 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088383132] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:58,054 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:58,054 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:58,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338040984] [2021-06-01 17:34:58,054 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:58,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:58,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:58,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:58,054 INFO L87 Difference]: Start difference. First operand 909 states and 3460 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:58,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:58,108 INFO L93 Difference]: Finished difference Result 1935 states and 7081 transitions. [2021-06-01 17:34:58,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:58,108 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:58,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:58,111 INFO L225 Difference]: With dead ends: 1935 [2021-06-01 17:34:58,112 INFO L226 Difference]: Without dead ends: 1688 [2021-06-01 17:34:58,112 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:58,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2021-06-01 17:34:58,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 953. [2021-06-01 17:34:58,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 953 states, 952 states have (on average 3.810924369747899) internal successors, (3628), 952 states have internal predecessors, (3628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:58,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 3628 transitions. [2021-06-01 17:34:58,129 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 3628 transitions. Word has length 25 [2021-06-01 17:34:58,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:58,129 INFO L482 AbstractCegarLoop]: Abstraction has 953 states and 3628 transitions. [2021-06-01 17:34:58,129 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:58,129 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 3628 transitions. [2021-06-01 17:34:58,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:58,130 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:58,130 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:58,130 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable694 [2021-06-01 17:34:58,130 INFO L430 AbstractCegarLoop]: === Iteration 696 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:58,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:58,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1050680637, now seen corresponding path program 692 times [2021-06-01 17:34:58,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:58,131 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023172120] [2021-06-01 17:34:58,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:58,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:58,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:58,211 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:58,211 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023172120] [2021-06-01 17:34:58,211 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023172120] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:58,211 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:58,211 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:58,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831412555] [2021-06-01 17:34:58,211 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:58,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:58,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:58,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:58,212 INFO L87 Difference]: Start difference. First operand 953 states and 3628 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:58,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:58,270 INFO L93 Difference]: Finished difference Result 1951 states and 7129 transitions. [2021-06-01 17:34:58,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:58,270 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:58,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:58,273 INFO L225 Difference]: With dead ends: 1951 [2021-06-01 17:34:58,273 INFO L226 Difference]: Without dead ends: 1664 [2021-06-01 17:34:58,273 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 100.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:58,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2021-06-01 17:34:58,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 929. [2021-06-01 17:34:58,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 928 states have (on average 3.814655172413793) internal successors, (3540), 928 states have internal predecessors, (3540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:58,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 3540 transitions. [2021-06-01 17:34:58,291 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 3540 transitions. Word has length 25 [2021-06-01 17:34:58,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:58,291 INFO L482 AbstractCegarLoop]: Abstraction has 929 states and 3540 transitions. [2021-06-01 17:34:58,291 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:58,291 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 3540 transitions. [2021-06-01 17:34:58,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:58,292 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:58,292 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:58,292 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable695 [2021-06-01 17:34:58,292 INFO L430 AbstractCegarLoop]: === Iteration 697 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:58,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:58,292 INFO L82 PathProgramCache]: Analyzing trace with hash -647905347, now seen corresponding path program 693 times [2021-06-01 17:34:58,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:58,292 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052284724] [2021-06-01 17:34:58,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:58,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:58,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:58,384 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:58,384 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052284724] [2021-06-01 17:34:58,384 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052284724] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:58,384 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:58,384 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:58,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842471887] [2021-06-01 17:34:58,384 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:58,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:58,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:58,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:58,385 INFO L87 Difference]: Start difference. First operand 929 states and 3540 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:58,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:58,440 INFO L93 Difference]: Finished difference Result 1855 states and 6765 transitions. [2021-06-01 17:34:58,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:58,441 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:58,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:58,443 INFO L225 Difference]: With dead ends: 1855 [2021-06-01 17:34:58,444 INFO L226 Difference]: Without dead ends: 1608 [2021-06-01 17:34:58,444 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 112.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:58,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2021-06-01 17:34:58,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 973. [2021-06-01 17:34:58,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 972 states have (on average 3.7983539094650207) internal successors, (3692), 972 states have internal predecessors, (3692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:58,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 3692 transitions. [2021-06-01 17:34:58,461 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 3692 transitions. Word has length 25 [2021-06-01 17:34:58,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:58,461 INFO L482 AbstractCegarLoop]: Abstraction has 973 states and 3692 transitions. [2021-06-01 17:34:58,461 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:58,461 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 3692 transitions. [2021-06-01 17:34:58,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:58,462 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:58,462 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:58,462 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable696 [2021-06-01 17:34:58,462 INFO L430 AbstractCegarLoop]: === Iteration 698 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:58,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:58,463 INFO L82 PathProgramCache]: Analyzing trace with hash 121866173, now seen corresponding path program 694 times [2021-06-01 17:34:58,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:58,463 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057096117] [2021-06-01 17:34:58,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:58,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:58,555 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:58,555 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057096117] [2021-06-01 17:34:58,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057096117] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:58,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:58,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:58,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559898222] [2021-06-01 17:34:58,555 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:58,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:58,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:58,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:58,555 INFO L87 Difference]: Start difference. First operand 973 states and 3692 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:58,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:58,612 INFO L93 Difference]: Finished difference Result 1734 states and 6379 transitions. [2021-06-01 17:34:58,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:58,613 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:58,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:58,615 INFO L225 Difference]: With dead ends: 1734 [2021-06-01 17:34:58,615 INFO L226 Difference]: Without dead ends: 1372 [2021-06-01 17:34:58,615 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:58,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2021-06-01 17:34:58,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 929. [2021-06-01 17:34:58,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 928 states have (on average 3.793103448275862) internal successors, (3520), 928 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:58,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 3520 transitions. [2021-06-01 17:34:58,631 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 3520 transitions. Word has length 25 [2021-06-01 17:34:58,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:58,631 INFO L482 AbstractCegarLoop]: Abstraction has 929 states and 3520 transitions. [2021-06-01 17:34:58,631 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:58,631 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 3520 transitions. [2021-06-01 17:34:58,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:58,632 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:58,632 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:58,632 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable697 [2021-06-01 17:34:58,632 INFO L430 AbstractCegarLoop]: === Iteration 699 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:58,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:58,632 INFO L82 PathProgramCache]: Analyzing trace with hash -259900385, now seen corresponding path program 695 times [2021-06-01 17:34:58,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:58,632 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893660946] [2021-06-01 17:34:58,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:58,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:58,721 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:58,721 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893660946] [2021-06-01 17:34:58,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893660946] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:58,722 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:58,722 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:58,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275735723] [2021-06-01 17:34:58,722 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:58,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:58,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:58,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:58,722 INFO L87 Difference]: Start difference. First operand 929 states and 3520 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:58,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:58,778 INFO L93 Difference]: Finished difference Result 1563 states and 5736 transitions. [2021-06-01 17:34:58,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:58,778 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:58,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:58,781 INFO L225 Difference]: With dead ends: 1563 [2021-06-01 17:34:58,781 INFO L226 Difference]: Without dead ends: 1300 [2021-06-01 17:34:58,781 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:58,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2021-06-01 17:34:58,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 981. [2021-06-01 17:34:58,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 980 states have (on average 3.779591836734694) internal successors, (3704), 980 states have internal predecessors, (3704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:58,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 3704 transitions. [2021-06-01 17:34:58,797 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 3704 transitions. Word has length 25 [2021-06-01 17:34:58,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:58,797 INFO L482 AbstractCegarLoop]: Abstraction has 981 states and 3704 transitions. [2021-06-01 17:34:58,797 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:58,797 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 3704 transitions. [2021-06-01 17:34:58,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:58,798 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:58,798 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:58,798 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable698 [2021-06-01 17:34:58,798 INFO L430 AbstractCegarLoop]: === Iteration 700 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:58,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:58,798 INFO L82 PathProgramCache]: Analyzing trace with hash -2080935811, now seen corresponding path program 696 times [2021-06-01 17:34:58,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:58,798 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060547412] [2021-06-01 17:34:58,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:58,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:58,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:58,889 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:58,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060547412] [2021-06-01 17:34:58,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060547412] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:58,889 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:58,889 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:58,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088384442] [2021-06-01 17:34:58,889 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:58,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:58,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:58,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:58,889 INFO L87 Difference]: Start difference. First operand 981 states and 3704 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:58,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:58,931 INFO L93 Difference]: Finished difference Result 1299 states and 4799 transitions. [2021-06-01 17:34:58,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:58,931 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:58,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:58,933 INFO L225 Difference]: With dead ends: 1299 [2021-06-01 17:34:58,933 INFO L226 Difference]: Without dead ends: 895 [2021-06-01 17:34:58,933 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:58,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2021-06-01 17:34:58,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 895. [2021-06-01 17:34:58,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 894 states have (on average 3.825503355704698) internal successors, (3420), 894 states have internal predecessors, (3420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:58,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 3420 transitions. [2021-06-01 17:34:58,946 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 3420 transitions. Word has length 25 [2021-06-01 17:34:58,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:58,946 INFO L482 AbstractCegarLoop]: Abstraction has 895 states and 3420 transitions. [2021-06-01 17:34:58,946 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:58,946 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 3420 transitions. [2021-06-01 17:34:58,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:58,947 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:58,947 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:58,947 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable699 [2021-06-01 17:34:58,947 INFO L430 AbstractCegarLoop]: === Iteration 701 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:58,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:58,947 INFO L82 PathProgramCache]: Analyzing trace with hash 738750649, now seen corresponding path program 697 times [2021-06-01 17:34:58,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:58,947 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082709861] [2021-06-01 17:34:58,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:59,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:59,022 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:59,022 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082709861] [2021-06-01 17:34:59,022 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082709861] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:59,022 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:59,022 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:59,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308142549] [2021-06-01 17:34:59,023 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:59,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:59,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:59,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:59,023 INFO L87 Difference]: Start difference. First operand 895 states and 3420 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:59,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:59,077 INFO L93 Difference]: Finished difference Result 1738 states and 6318 transitions. [2021-06-01 17:34:59,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:59,077 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:59,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:59,080 INFO L225 Difference]: With dead ends: 1738 [2021-06-01 17:34:59,080 INFO L226 Difference]: Without dead ends: 1455 [2021-06-01 17:34:59,080 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:59,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2021-06-01 17:34:59,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 923. [2021-06-01 17:34:59,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 923 states, 922 states have (on average 3.804772234273319) internal successors, (3508), 922 states have internal predecessors, (3508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:59,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 3508 transitions. [2021-06-01 17:34:59,096 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 3508 transitions. Word has length 25 [2021-06-01 17:34:59,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:59,096 INFO L482 AbstractCegarLoop]: Abstraction has 923 states and 3508 transitions. [2021-06-01 17:34:59,096 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:59,096 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 3508 transitions. [2021-06-01 17:34:59,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:59,097 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:59,097 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:59,097 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable700 [2021-06-01 17:34:59,097 INFO L430 AbstractCegarLoop]: === Iteration 702 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:59,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:59,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1819813275, now seen corresponding path program 698 times [2021-06-01 17:34:59,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:59,097 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054679276] [2021-06-01 17:34:59,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:59,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:59,171 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:59,171 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054679276] [2021-06-01 17:34:59,171 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054679276] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:59,171 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:59,171 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:59,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843614319] [2021-06-01 17:34:59,172 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:59,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:59,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:59,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:59,172 INFO L87 Difference]: Start difference. First operand 923 states and 3508 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:59,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:59,222 INFO L93 Difference]: Finished difference Result 1702 states and 6142 transitions. [2021-06-01 17:34:59,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:59,222 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:59,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:59,225 INFO L225 Difference]: With dead ends: 1702 [2021-06-01 17:34:59,225 INFO L226 Difference]: Without dead ends: 1427 [2021-06-01 17:34:59,225 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:59,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2021-06-01 17:34:59,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 895. [2021-06-01 17:34:59,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 894 states have (on average 3.8120805369127515) internal successors, (3408), 894 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:59,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 3408 transitions. [2021-06-01 17:34:59,241 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 3408 transitions. Word has length 25 [2021-06-01 17:34:59,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:59,241 INFO L482 AbstractCegarLoop]: Abstraction has 895 states and 3408 transitions. [2021-06-01 17:34:59,241 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:59,241 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 3408 transitions. [2021-06-01 17:34:59,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:59,243 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:59,243 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:59,243 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable701 [2021-06-01 17:34:59,243 INFO L430 AbstractCegarLoop]: === Iteration 703 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:59,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:59,243 INFO L82 PathProgramCache]: Analyzing trace with hash 257848603, now seen corresponding path program 699 times [2021-06-01 17:34:59,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:59,243 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118389953] [2021-06-01 17:34:59,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:59,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:59,317 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:59,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118389953] [2021-06-01 17:34:59,317 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118389953] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:59,317 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:59,317 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:59,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348000601] [2021-06-01 17:34:59,317 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:59,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:59,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:59,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:59,317 INFO L87 Difference]: Start difference. First operand 895 states and 3408 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:59,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:59,372 INFO L93 Difference]: Finished difference Result 1762 states and 6418 transitions. [2021-06-01 17:34:59,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:59,372 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:59,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:59,375 INFO L225 Difference]: With dead ends: 1762 [2021-06-01 17:34:59,375 INFO L226 Difference]: Without dead ends: 1479 [2021-06-01 17:34:59,375 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:59,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2021-06-01 17:34:59,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 931. [2021-06-01 17:34:59,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 930 states have (on average 3.793548387096774) internal successors, (3528), 930 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:59,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 3528 transitions. [2021-06-01 17:34:59,391 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 3528 transitions. Word has length 25 [2021-06-01 17:34:59,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:59,391 INFO L482 AbstractCegarLoop]: Abstraction has 931 states and 3528 transitions. [2021-06-01 17:34:59,392 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:59,392 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 3528 transitions. [2021-06-01 17:34:59,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:59,393 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:59,393 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:59,393 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable702 [2021-06-01 17:34:59,393 INFO L430 AbstractCegarLoop]: === Iteration 704 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:59,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:59,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1430397669, now seen corresponding path program 700 times [2021-06-01 17:34:59,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:59,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743849257] [2021-06-01 17:34:59,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:59,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:59,468 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:59,468 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743849257] [2021-06-01 17:34:59,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743849257] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:59,468 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:59,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:59,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175365295] [2021-06-01 17:34:59,469 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:59,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:59,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:59,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:59,469 INFO L87 Difference]: Start difference. First operand 931 states and 3528 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:59,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:59,521 INFO L93 Difference]: Finished difference Result 1742 states and 6306 transitions. [2021-06-01 17:34:59,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:59,522 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:59,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:59,524 INFO L225 Difference]: With dead ends: 1742 [2021-06-01 17:34:59,524 INFO L226 Difference]: Without dead ends: 1443 [2021-06-01 17:34:59,524 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:59,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2021-06-01 17:34:59,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 895. [2021-06-01 17:34:59,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 894 states have (on average 3.7986577181208054) internal successors, (3396), 894 states have internal predecessors, (3396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:59,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 3396 transitions. [2021-06-01 17:34:59,540 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 3396 transitions. Word has length 25 [2021-06-01 17:34:59,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:59,540 INFO L482 AbstractCegarLoop]: Abstraction has 895 states and 3396 transitions. [2021-06-01 17:34:59,540 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:59,541 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 3396 transitions. [2021-06-01 17:34:59,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:59,542 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:59,542 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:59,542 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable703 [2021-06-01 17:34:59,542 INFO L430 AbstractCegarLoop]: === Iteration 705 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:59,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:59,542 INFO L82 PathProgramCache]: Analyzing trace with hash 645853565, now seen corresponding path program 701 times [2021-06-01 17:34:59,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:59,542 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106156934] [2021-06-01 17:34:59,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:59,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:59,617 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:59,617 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106156934] [2021-06-01 17:34:59,617 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106156934] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:59,617 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:59,617 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:59,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549413459] [2021-06-01 17:34:59,617 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:59,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:59,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:59,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:59,618 INFO L87 Difference]: Start difference. First operand 895 states and 3396 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:59,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:59,665 INFO L93 Difference]: Finished difference Result 1678 states and 6054 transitions. [2021-06-01 17:34:59,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:59,666 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:59,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:59,668 INFO L225 Difference]: With dead ends: 1678 [2021-06-01 17:34:59,668 INFO L226 Difference]: Without dead ends: 1431 [2021-06-01 17:34:59,668 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:59,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2021-06-01 17:34:59,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 919. [2021-06-01 17:34:59,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 918 states have (on average 3.7821350762527235) internal successors, (3472), 918 states have internal predecessors, (3472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:59,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 3472 transitions. [2021-06-01 17:34:59,684 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 3472 transitions. Word has length 25 [2021-06-01 17:34:59,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:59,684 INFO L482 AbstractCegarLoop]: Abstraction has 919 states and 3472 transitions. [2021-06-01 17:34:59,684 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:59,684 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 3472 transitions. [2021-06-01 17:34:59,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:59,685 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:59,685 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:59,686 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable704 [2021-06-01 17:34:59,686 INFO L430 AbstractCegarLoop]: === Iteration 706 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:59,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:59,686 INFO L82 PathProgramCache]: Analyzing trace with hash -200943397, now seen corresponding path program 702 times [2021-06-01 17:34:59,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:59,686 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124320799] [2021-06-01 17:34:59,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:59,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:59,760 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:59,760 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124320799] [2021-06-01 17:34:59,760 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124320799] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:59,761 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:59,761 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:59,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249522964] [2021-06-01 17:34:59,761 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:59,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:59,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:59,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:59,761 INFO L87 Difference]: Start difference. First operand 919 states and 3472 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:59,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:59,812 INFO L93 Difference]: Finished difference Result 1694 states and 6102 transitions. [2021-06-01 17:34:59,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:59,812 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:59,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:59,814 INFO L225 Difference]: With dead ends: 1694 [2021-06-01 17:34:59,815 INFO L226 Difference]: Without dead ends: 1395 [2021-06-01 17:34:59,815 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:59,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2021-06-01 17:34:59,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 883. [2021-06-01 17:34:59,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 3.8072562358276643) internal successors, (3358), 882 states have internal predecessors, (3358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:59,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 3358 transitions. [2021-06-01 17:34:59,830 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 3358 transitions. Word has length 25 [2021-06-01 17:34:59,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:59,830 INFO L482 AbstractCegarLoop]: Abstraction has 883 states and 3358 transitions. [2021-06-01 17:34:59,830 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:59,830 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 3358 transitions. [2021-06-01 17:34:59,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:59,831 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:59,831 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:59,831 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable705 [2021-06-01 17:34:59,831 INFO L430 AbstractCegarLoop]: === Iteration 707 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:59,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:59,832 INFO L82 PathProgramCache]: Analyzing trace with hash 4290459, now seen corresponding path program 703 times [2021-06-01 17:34:59,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:59,832 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062196594] [2021-06-01 17:34:59,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:59,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:34:59,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:34:59,908 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:34:59,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062196594] [2021-06-01 17:34:59,908 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062196594] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:34:59,908 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:34:59,908 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:34:59,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565584479] [2021-06-01 17:34:59,908 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:34:59,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:34:59,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:34:59,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:34:59,909 INFO L87 Difference]: Start difference. First operand 883 states and 3358 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:59,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:34:59,958 INFO L93 Difference]: Finished difference Result 1698 states and 6140 transitions. [2021-06-01 17:34:59,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:34:59,958 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:34:59,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:34:59,961 INFO L225 Difference]: With dead ends: 1698 [2021-06-01 17:34:59,961 INFO L226 Difference]: Without dead ends: 1415 [2021-06-01 17:34:59,961 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:34:59,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2021-06-01 17:34:59,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 883. [2021-06-01 17:34:59,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 3.7755102040816326) internal successors, (3330), 882 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:59,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 3330 transitions. [2021-06-01 17:34:59,977 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 3330 transitions. Word has length 25 [2021-06-01 17:34:59,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:34:59,977 INFO L482 AbstractCegarLoop]: Abstraction has 883 states and 3330 transitions. [2021-06-01 17:34:59,977 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:34:59,977 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 3330 transitions. [2021-06-01 17:34:59,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:34:59,978 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:34:59,978 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:34:59,978 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable706 [2021-06-01 17:34:59,978 INFO L430 AbstractCegarLoop]: === Iteration 708 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:34:59,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:34:59,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1085353085, now seen corresponding path program 704 times [2021-06-01 17:34:59,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:34:59,978 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425142004] [2021-06-01 17:34:59,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:34:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:35:00,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:35:00,053 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:35:00,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425142004] [2021-06-01 17:35:00,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425142004] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:35:00,053 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:35:00,053 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:35:00,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802613729] [2021-06-01 17:35:00,054 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:35:00,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:35:00,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:35:00,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:35:00,054 INFO L87 Difference]: Start difference. First operand 883 states and 3330 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:00,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:35:00,104 INFO L93 Difference]: Finished difference Result 1662 states and 5964 transitions. [2021-06-01 17:35:00,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:35:00,104 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:35:00,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:35:00,107 INFO L225 Difference]: With dead ends: 1662 [2021-06-01 17:35:00,107 INFO L226 Difference]: Without dead ends: 1387 [2021-06-01 17:35:00,107 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:35:00,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2021-06-01 17:35:00,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 855. [2021-06-01 17:35:00,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 3.7798594847775178) internal successors, (3228), 854 states have internal predecessors, (3228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:00,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 3228 transitions. [2021-06-01 17:35:00,122 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 3228 transitions. Word has length 25 [2021-06-01 17:35:00,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:35:00,122 INFO L482 AbstractCegarLoop]: Abstraction has 855 states and 3228 transitions. [2021-06-01 17:35:00,122 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:00,122 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 3228 transitions. [2021-06-01 17:35:00,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:35:00,123 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:35:00,124 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:35:00,124 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable707 [2021-06-01 17:35:00,124 INFO L430 AbstractCegarLoop]: === Iteration 709 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:35:00,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:35:00,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1020346267, now seen corresponding path program 705 times [2021-06-01 17:35:00,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:35:00,124 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493671006] [2021-06-01 17:35:00,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:35:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:35:00,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:35:00,199 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:35:00,199 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493671006] [2021-06-01 17:35:00,199 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493671006] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:35:00,199 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:35:00,199 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:35:00,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296402073] [2021-06-01 17:35:00,199 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:35:00,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:35:00,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:35:00,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:35:00,200 INFO L87 Difference]: Start difference. First operand 855 states and 3228 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:00,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:35:00,248 INFO L93 Difference]: Finished difference Result 1711 states and 6188 transitions. [2021-06-01 17:35:00,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:35:00,249 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:35:00,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:35:00,251 INFO L225 Difference]: With dead ends: 1711 [2021-06-01 17:35:00,251 INFO L226 Difference]: Without dead ends: 1428 [2021-06-01 17:35:00,251 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:35:00,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2021-06-01 17:35:00,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 917. [2021-06-01 17:35:00,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 916 states have (on average 3.760917030567686) internal successors, (3445), 916 states have internal predecessors, (3445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:00,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 3445 transitions. [2021-06-01 17:35:00,267 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 3445 transitions. Word has length 25 [2021-06-01 17:35:00,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:35:00,267 INFO L482 AbstractCegarLoop]: Abstraction has 917 states and 3445 transitions. [2021-06-01 17:35:00,267 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:00,267 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 3445 transitions. [2021-06-01 17:35:00,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:35:00,268 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:35:00,268 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:35:00,268 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable708 [2021-06-01 17:35:00,268 INFO L430 AbstractCegarLoop]: === Iteration 710 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:35:00,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:35:00,268 INFO L82 PathProgramCache]: Analyzing trace with hash -767035493, now seen corresponding path program 706 times [2021-06-01 17:35:00,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:35:00,269 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127649340] [2021-06-01 17:35:00,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:35:00,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:35:00,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:35:00,344 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:35:00,344 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127649340] [2021-06-01 17:35:00,344 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127649340] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:35:00,344 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:35:00,344 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:35:00,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623452944] [2021-06-01 17:35:00,345 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:35:00,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:35:00,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:35:00,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:35:00,345 INFO L87 Difference]: Start difference. First operand 917 states and 3445 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:00,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:35:00,382 INFO L93 Difference]: Finished difference Result 1554 states and 5636 transitions. [2021-06-01 17:35:00,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:35:00,382 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:35:00,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:35:00,384 INFO L225 Difference]: With dead ends: 1554 [2021-06-01 17:35:00,384 INFO L226 Difference]: Without dead ends: 1174 [2021-06-01 17:35:00,385 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:35:00,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2021-06-01 17:35:00,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 855. [2021-06-01 17:35:00,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 3.7540983606557377) internal successors, (3206), 854 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:00,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 3206 transitions. [2021-06-01 17:35:00,399 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 3206 transitions. Word has length 25 [2021-06-01 17:35:00,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:35:00,399 INFO L482 AbstractCegarLoop]: Abstraction has 855 states and 3206 transitions. [2021-06-01 17:35:00,399 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:00,399 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 3206 transitions. [2021-06-01 17:35:00,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:35:00,400 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:35:00,400 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:35:00,400 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable709 [2021-06-01 17:35:00,400 INFO L430 AbstractCegarLoop]: === Iteration 711 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:35:00,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:35:00,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1408351229, now seen corresponding path program 707 times [2021-06-01 17:35:00,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:35:00,400 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293902864] [2021-06-01 17:35:00,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:35:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:35:00,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:35:00,488 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:35:00,488 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293902864] [2021-06-01 17:35:00,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293902864] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:35:00,488 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:35:00,488 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:35:00,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855490161] [2021-06-01 17:35:00,488 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:35:00,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:35:00,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:35:00,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:35:00,489 INFO L87 Difference]: Start difference. First operand 855 states and 3206 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:00,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:35:00,540 INFO L93 Difference]: Finished difference Result 1657 states and 5935 transitions. [2021-06-01 17:35:00,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:35:00,540 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:35:00,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:35:00,542 INFO L225 Difference]: With dead ends: 1657 [2021-06-01 17:35:00,542 INFO L226 Difference]: Without dead ends: 1410 [2021-06-01 17:35:00,543 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 107.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:35:00,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1410 states. [2021-06-01 17:35:00,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1410 to 899. [2021-06-01 17:35:00,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 898 states have (on average 3.739420935412027) internal successors, (3358), 898 states have internal predecessors, (3358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:00,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 3358 transitions. [2021-06-01 17:35:00,558 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 3358 transitions. Word has length 25 [2021-06-01 17:35:00,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:35:00,558 INFO L482 AbstractCegarLoop]: Abstraction has 899 states and 3358 transitions. [2021-06-01 17:35:00,558 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:00,558 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 3358 transitions. [2021-06-01 17:35:00,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:35:00,559 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:35:00,559 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:35:00,559 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable710 [2021-06-01 17:35:00,559 INFO L430 AbstractCegarLoop]: === Iteration 712 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:35:00,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:35:00,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1681966885, now seen corresponding path program 708 times [2021-06-01 17:35:00,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:35:00,560 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286422537] [2021-06-01 17:35:00,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:35:00,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:35:00,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:35:00,647 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:35:00,647 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286422537] [2021-06-01 17:35:00,647 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286422537] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:35:00,647 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:35:00,647 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:35:00,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706663583] [2021-06-01 17:35:00,647 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:35:00,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:35:00,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:35:00,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:35:00,647 INFO L87 Difference]: Start difference. First operand 899 states and 3358 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:00,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:35:00,684 INFO L93 Difference]: Finished difference Result 1536 states and 5549 transitions. [2021-06-01 17:35:00,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:35:00,684 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:35:00,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:35:00,686 INFO L225 Difference]: With dead ends: 1536 [2021-06-01 17:35:00,686 INFO L226 Difference]: Without dead ends: 1152 [2021-06-01 17:35:00,686 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 93.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:35:00,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2021-06-01 17:35:00,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 833. [2021-06-01 17:35:00,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 832 states have (on average 3.7632211538461537) internal successors, (3131), 832 states have internal predecessors, (3131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:00,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 3131 transitions. [2021-06-01 17:35:00,706 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 3131 transitions. Word has length 25 [2021-06-01 17:35:00,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:35:00,707 INFO L482 AbstractCegarLoop]: Abstraction has 833 states and 3131 transitions. [2021-06-01 17:35:00,707 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:00,707 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 3131 transitions. [2021-06-01 17:35:00,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:35:00,708 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:35:00,708 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:35:00,708 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable711 [2021-06-01 17:35:00,708 INFO L430 AbstractCegarLoop]: === Iteration 713 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:35:00,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:35:00,708 INFO L82 PathProgramCache]: Analyzing trace with hash -785095811, now seen corresponding path program 709 times [2021-06-01 17:35:00,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:35:00,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456605448] [2021-06-01 17:35:00,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:35:00,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:35:00,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:35:00,783 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:35:00,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456605448] [2021-06-01 17:35:00,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456605448] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:35:00,783 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:35:00,783 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:35:00,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703969712] [2021-06-01 17:35:00,783 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:35:00,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:35:00,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:35:00,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:35:00,784 INFO L87 Difference]: Start difference. First operand 833 states and 3131 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:00,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:35:00,832 INFO L93 Difference]: Finished difference Result 1572 states and 5633 transitions. [2021-06-01 17:35:00,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:35:00,833 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:35:00,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:35:00,835 INFO L225 Difference]: With dead ends: 1572 [2021-06-01 17:35:00,835 INFO L226 Difference]: Without dead ends: 1289 [2021-06-01 17:35:00,835 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 95.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:35:00,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2021-06-01 17:35:00,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 833. [2021-06-01 17:35:00,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 832 states have (on average 3.719951923076923) internal successors, (3095), 832 states have internal predecessors, (3095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:00,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 3095 transitions. [2021-06-01 17:35:00,851 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 3095 transitions. Word has length 25 [2021-06-01 17:35:00,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:35:00,851 INFO L482 AbstractCegarLoop]: Abstraction has 833 states and 3095 transitions. [2021-06-01 17:35:00,851 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:00,851 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 3095 transitions. [2021-06-01 17:35:00,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:35:00,852 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:35:00,852 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:35:00,852 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable712 [2021-06-01 17:35:00,852 INFO L430 AbstractCegarLoop]: === Iteration 714 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:35:00,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:35:00,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1821625213, now seen corresponding path program 710 times [2021-06-01 17:35:00,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:35:00,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683703506] [2021-06-01 17:35:00,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:35:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:35:00,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:35:00,928 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:35:00,928 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683703506] [2021-06-01 17:35:00,928 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683703506] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:35:00,929 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:35:00,929 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:35:00,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813253973] [2021-06-01 17:35:00,929 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:35:00,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:35:00,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:35:00,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:35:00,929 INFO L87 Difference]: Start difference. First operand 833 states and 3095 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:00,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:35:00,978 INFO L93 Difference]: Finished difference Result 1552 states and 5521 transitions. [2021-06-01 17:35:00,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:35:00,978 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:35:00,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:35:00,980 INFO L225 Difference]: With dead ends: 1552 [2021-06-01 17:35:00,980 INFO L226 Difference]: Without dead ends: 1253 [2021-06-01 17:35:00,981 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:35:00,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2021-06-01 17:35:00,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 797. [2021-06-01 17:35:00,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 796 states have (on average 3.7148241206030153) internal successors, (2957), 796 states have internal predecessors, (2957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:00,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 2957 transitions. [2021-06-01 17:35:00,994 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 2957 transitions. Word has length 25 [2021-06-01 17:35:00,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:35:00,994 INFO L482 AbstractCegarLoop]: Abstraction has 797 states and 2957 transitions. [2021-06-01 17:35:00,994 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:00,994 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 2957 transitions. [2021-06-01 17:35:00,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:35:00,995 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:35:00,995 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:35:00,995 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable713 [2021-06-01 17:35:00,995 INFO L430 AbstractCegarLoop]: === Iteration 715 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:35:00,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:35:00,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1546516571, now seen corresponding path program 711 times [2021-06-01 17:35:00,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:35:00,996 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777504328] [2021-06-01 17:35:00,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:35:00,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:35:01,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:35:01,073 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:35:01,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777504328] [2021-06-01 17:35:01,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777504328] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:35:01,073 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:35:01,073 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:35:01,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104876008] [2021-06-01 17:35:01,073 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:35:01,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:35:01,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:35:01,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:35:01,073 INFO L87 Difference]: Start difference. First operand 797 states and 2957 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:01,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:35:01,123 INFO L93 Difference]: Finished difference Result 1499 states and 5302 transitions. [2021-06-01 17:35:01,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:35:01,123 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:35:01,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:35:01,125 INFO L225 Difference]: With dead ends: 1499 [2021-06-01 17:35:01,125 INFO L226 Difference]: Without dead ends: 1216 [2021-06-01 17:35:01,126 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:35:01,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2021-06-01 17:35:01,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 705. [2021-06-01 17:35:01,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 704 states have (on average 3.6349431818181817) internal successors, (2559), 704 states have internal predecessors, (2559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:01,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 2559 transitions. [2021-06-01 17:35:01,137 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 2559 transitions. Word has length 25 [2021-06-01 17:35:01,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:35:01,138 INFO L482 AbstractCegarLoop]: Abstraction has 705 states and 2559 transitions. [2021-06-01 17:35:01,138 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:01,138 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 2559 transitions. [2021-06-01 17:35:01,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:35:01,138 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:35:01,138 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:35:01,139 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable714 [2021-06-01 17:35:01,139 INFO L430 AbstractCegarLoop]: === Iteration 716 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:35:01,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:35:01,139 INFO L82 PathProgramCache]: Analyzing trace with hash 942566269, now seen corresponding path program 712 times [2021-06-01 17:35:01,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:35:01,139 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700180560] [2021-06-01 17:35:01,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:35:01,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:35:01,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:35:01,225 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:35:01,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700180560] [2021-06-01 17:35:01,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700180560] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:35:01,225 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:35:01,225 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:35:01,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775021517] [2021-06-01 17:35:01,225 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:35:01,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:35:01,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:35:01,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:35:01,226 INFO L87 Difference]: Start difference. First operand 705 states and 2559 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:01,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:35:01,263 INFO L93 Difference]: Finished difference Result 1342 states and 4750 transitions. [2021-06-01 17:35:01,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:35:01,263 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:35:01,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:35:01,265 INFO L225 Difference]: With dead ends: 1342 [2021-06-01 17:35:01,265 INFO L226 Difference]: Without dead ends: 962 [2021-06-01 17:35:01,265 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 89.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:35:01,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2021-06-01 17:35:01,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 643. [2021-06-01 17:35:01,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 3.607476635514019) internal successors, (2316), 642 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:01,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 2316 transitions. [2021-06-01 17:35:01,284 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 2316 transitions. Word has length 25 [2021-06-01 17:35:01,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:35:01,284 INFO L482 AbstractCegarLoop]: Abstraction has 643 states and 2316 transitions. [2021-06-01 17:35:01,284 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:01,284 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 2316 transitions. [2021-06-01 17:35:01,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:35:01,285 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:35:01,285 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:35:01,285 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable715 [2021-06-01 17:35:01,285 INFO L430 AbstractCegarLoop]: === Iteration 717 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:35:01,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:35:01,286 INFO L82 PathProgramCache]: Analyzing trace with hash 2134672253, now seen corresponding path program 713 times [2021-06-01 17:35:01,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:35:01,286 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823845332] [2021-06-01 17:35:01,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:35:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:35:01,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:35:01,372 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:35:01,372 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823845332] [2021-06-01 17:35:01,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823845332] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:35:01,372 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:35:01,372 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:35:01,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460026445] [2021-06-01 17:35:01,372 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:35:01,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:35:01,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:35:01,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:35:01,373 INFO L87 Difference]: Start difference. First operand 643 states and 2316 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:01,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:35:01,420 INFO L93 Difference]: Finished difference Result 1277 states and 4532 transitions. [2021-06-01 17:35:01,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:35:01,421 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:35:01,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:35:01,423 INFO L225 Difference]: With dead ends: 1277 [2021-06-01 17:35:01,423 INFO L226 Difference]: Without dead ends: 1014 [2021-06-01 17:35:01,423 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 106.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:35:01,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2021-06-01 17:35:01,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 695. [2021-06-01 17:35:01,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 694 states have (on average 3.602305475504323) internal successors, (2500), 694 states have internal predecessors, (2500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:01,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 2500 transitions. [2021-06-01 17:35:01,434 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 2500 transitions. Word has length 25 [2021-06-01 17:35:01,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:35:01,434 INFO L482 AbstractCegarLoop]: Abstraction has 695 states and 2500 transitions. [2021-06-01 17:35:01,434 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:01,434 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 2500 transitions. [2021-06-01 17:35:01,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:35:01,435 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:35:01,435 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:35:01,435 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable716 [2021-06-01 17:35:01,435 INFO L430 AbstractCegarLoop]: === Iteration 718 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:35:01,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:35:01,436 INFO L82 PathProgramCache]: Analyzing trace with hash 313636827, now seen corresponding path program 714 times [2021-06-01 17:35:01,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:35:01,436 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927143845] [2021-06-01 17:35:01,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:35:01,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:35:01,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:35:01,524 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:35:01,524 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927143845] [2021-06-01 17:35:01,524 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927143845] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:35:01,524 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:35:01,524 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:35:01,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184789594] [2021-06-01 17:35:01,524 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:35:01,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:35:01,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:35:01,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:35:01,524 INFO L87 Difference]: Start difference. First operand 695 states and 2500 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:01,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:35:01,556 INFO L93 Difference]: Finished difference Result 1013 states and 3595 transitions. [2021-06-01 17:35:01,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:35:01,557 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:35:01,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:35:01,558 INFO L225 Difference]: With dead ends: 1013 [2021-06-01 17:35:01,558 INFO L226 Difference]: Without dead ends: 617 [2021-06-01 17:35:01,558 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 94.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:35:01,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2021-06-01 17:35:01,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2021-06-01 17:35:01,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 616 states have (on average 3.61525974025974) internal successors, (2227), 616 states have internal predecessors, (2227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:01,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 2227 transitions. [2021-06-01 17:35:01,566 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 2227 transitions. Word has length 25 [2021-06-01 17:35:01,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:35:01,566 INFO L482 AbstractCegarLoop]: Abstraction has 617 states and 2227 transitions. [2021-06-01 17:35:01,566 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:01,566 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 2227 transitions. [2021-06-01 17:35:01,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:35:01,567 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:35:01,567 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:35:01,567 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable717 [2021-06-01 17:35:01,567 INFO L430 AbstractCegarLoop]: === Iteration 719 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:35:01,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:35:01,567 INFO L82 PathProgramCache]: Analyzing trace with hash -705575073, now seen corresponding path program 715 times [2021-06-01 17:35:01,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:35:01,568 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415529332] [2021-06-01 17:35:01,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:35:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:35:01,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:35:01,651 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:35:01,651 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415529332] [2021-06-01 17:35:01,651 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415529332] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:35:01,651 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:35:01,651 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:35:01,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774705361] [2021-06-01 17:35:01,651 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:35:01,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:35:01,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:35:01,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:35:01,651 INFO L87 Difference]: Start difference. First operand 617 states and 2227 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:01,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:35:01,697 INFO L93 Difference]: Finished difference Result 1056 states and 3680 transitions. [2021-06-01 17:35:01,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:35:01,697 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:35:01,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:35:01,699 INFO L225 Difference]: With dead ends: 1056 [2021-06-01 17:35:01,699 INFO L226 Difference]: Without dead ends: 809 [2021-06-01 17:35:01,699 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 102.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:35:01,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2021-06-01 17:35:01,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 617. [2021-06-01 17:35:01,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 616 states have (on average 3.5762987012987013) internal successors, (2203), 616 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:01,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 2203 transitions. [2021-06-01 17:35:01,708 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 2203 transitions. Word has length 25 [2021-06-01 17:35:01,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:35:01,708 INFO L482 AbstractCegarLoop]: Abstraction has 617 states and 2203 transitions. [2021-06-01 17:35:01,708 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:01,709 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 2203 transitions. [2021-06-01 17:35:01,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:35:01,709 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:35:01,709 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:35:01,709 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable718 [2021-06-01 17:35:01,709 INFO L430 AbstractCegarLoop]: === Iteration 720 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:35:01,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:35:01,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1552372035, now seen corresponding path program 716 times [2021-06-01 17:35:01,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:35:01,710 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792408535] [2021-06-01 17:35:01,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:35:01,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:35:01,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:35:01,794 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:35:01,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792408535] [2021-06-01 17:35:01,794 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792408535] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:35:01,794 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:35:01,794 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:35:01,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087633553] [2021-06-01 17:35:01,794 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:35:01,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:35:01,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:35:01,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:35:01,794 INFO L87 Difference]: Start difference. First operand 617 states and 2203 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:01,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:35:01,842 INFO L93 Difference]: Finished difference Result 1072 states and 3728 transitions. [2021-06-01 17:35:01,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:35:01,842 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:35:01,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:35:01,844 INFO L225 Difference]: With dead ends: 1072 [2021-06-01 17:35:01,844 INFO L226 Difference]: Without dead ends: 785 [2021-06-01 17:35:01,844 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 104.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:35:01,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2021-06-01 17:35:01,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 593. [2021-06-01 17:35:01,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 592 states have (on average 3.572635135135135) internal successors, (2115), 592 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:01,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 2115 transitions. [2021-06-01 17:35:01,853 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 2115 transitions. Word has length 25 [2021-06-01 17:35:01,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:35:01,853 INFO L482 AbstractCegarLoop]: Abstraction has 593 states and 2115 transitions. [2021-06-01 17:35:01,853 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:01,853 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 2115 transitions. [2021-06-01 17:35:01,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:35:01,853 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:35:01,853 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:35:01,853 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable719 [2021-06-01 17:35:01,854 INFO L430 AbstractCegarLoop]: === Iteration 721 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:35:01,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:35:01,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1626037309, now seen corresponding path program 717 times [2021-06-01 17:35:01,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:35:01,854 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195725024] [2021-06-01 17:35:01,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:35:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:35:01,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:35:01,965 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:35:01,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195725024] [2021-06-01 17:35:01,966 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195725024] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:35:01,966 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:35:01,966 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:35:01,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463706532] [2021-06-01 17:35:01,966 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:35:01,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:35:01,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:35:01,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:35:01,966 INFO L87 Difference]: Start difference. First operand 593 states and 2115 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:02,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:35:02,012 INFO L93 Difference]: Finished difference Result 976 states and 3364 transitions. [2021-06-01 17:35:02,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:35:02,013 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:35:02,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:35:02,014 INFO L225 Difference]: With dead ends: 976 [2021-06-01 17:35:02,014 INFO L226 Difference]: Without dead ends: 729 [2021-06-01 17:35:02,014 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 127.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:35:02,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2021-06-01 17:35:02,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 537. [2021-06-01 17:35:02,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 536 states have (on average 3.513059701492537) internal successors, (1883), 536 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:02,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 1883 transitions. [2021-06-01 17:35:02,022 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 1883 transitions. Word has length 25 [2021-06-01 17:35:02,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:35:02,022 INFO L482 AbstractCegarLoop]: Abstraction has 537 states and 1883 transitions. [2021-06-01 17:35:02,022 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:02,022 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 1883 transitions. [2021-06-01 17:35:02,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:35:02,023 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:35:02,023 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:35:02,023 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable720 [2021-06-01 17:35:02,023 INFO L430 AbstractCegarLoop]: === Iteration 722 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:35:02,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:35:02,023 INFO L82 PathProgramCache]: Analyzing trace with hash -280849347, now seen corresponding path program 718 times [2021-06-01 17:35:02,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:35:02,023 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240162233] [2021-06-01 17:35:02,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:35:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:35:02,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:35:02,119 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:35:02,119 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240162233] [2021-06-01 17:35:02,119 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240162233] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:35:02,119 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:35:02,119 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:35:02,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866126637] [2021-06-01 17:35:02,119 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:35:02,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:35:02,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:35:02,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:35:02,120 INFO L87 Difference]: Start difference. First operand 537 states and 1883 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:02,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:35:02,152 INFO L93 Difference]: Finished difference Result 855 states and 2978 transitions. [2021-06-01 17:35:02,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:35:02,153 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:35:02,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:35:02,153 INFO L225 Difference]: With dead ends: 855 [2021-06-01 17:35:02,153 INFO L226 Difference]: Without dead ends: 493 [2021-06-01 17:35:02,154 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:35:02,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2021-06-01 17:35:02,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 493. [2021-06-01 17:35:02,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 492 states have (on average 3.477642276422764) internal successors, (1711), 492 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:02,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 1711 transitions. [2021-06-01 17:35:02,160 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 1711 transitions. Word has length 25 [2021-06-01 17:35:02,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:35:02,160 INFO L482 AbstractCegarLoop]: Abstraction has 493 states and 1711 transitions. [2021-06-01 17:35:02,160 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:02,160 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 1711 transitions. [2021-06-01 17:35:02,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:35:02,161 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:35:02,161 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:35:02,161 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable721 [2021-06-01 17:35:02,161 INFO L430 AbstractCegarLoop]: === Iteration 723 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:35:02,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:35:02,161 INFO L82 PathProgramCache]: Analyzing trace with hash 769289243, now seen corresponding path program 719 times [2021-06-01 17:35:02,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:35:02,161 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185808567] [2021-06-01 17:35:02,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:35:02,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:35:02,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:35:02,256 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:35:02,256 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185808567] [2021-06-01 17:35:02,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185808567] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:35:02,257 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:35:02,257 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:35:02,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765257064] [2021-06-01 17:35:02,257 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:35:02,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:35:02,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:35:02,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:35:02,257 INFO L87 Difference]: Start difference. First operand 493 states and 1711 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:02,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:35:02,299 INFO L93 Difference]: Finished difference Result 684 states and 2335 transitions. [2021-06-01 17:35:02,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:35:02,299 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:35:02,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:35:02,300 INFO L225 Difference]: With dead ends: 684 [2021-06-01 17:35:02,300 INFO L226 Difference]: Without dead ends: 421 [2021-06-01 17:35:02,300 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:35:02,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-06-01 17:35:02,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2021-06-01 17:35:02,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 420 states have (on average 3.330952380952381) internal successors, (1399), 420 states have internal predecessors, (1399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:02,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 1399 transitions. [2021-06-01 17:35:02,305 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 1399 transitions. Word has length 25 [2021-06-01 17:35:02,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:35:02,305 INFO L482 AbstractCegarLoop]: Abstraction has 421 states and 1399 transitions. [2021-06-01 17:35:02,305 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:02,305 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 1399 transitions. [2021-06-01 17:35:02,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-06-01 17:35:02,305 INFO L546 BasicCegarLoop]: Found error trace [2021-06-01 17:35:02,305 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-01 17:35:02,305 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable722 [2021-06-01 17:35:02,306 INFO L430 AbstractCegarLoop]: === Iteration 724 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-01 17:35:02,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-01 17:35:02,306 INFO L82 PathProgramCache]: Analyzing trace with hash 151765885, now seen corresponding path program 720 times [2021-06-01 17:35:02,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-01 17:35:02,306 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527336395] [2021-06-01 17:35:02,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-01 17:35:02,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-01 17:35:02,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-01 17:35:02,403 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-01 17:35:02,403 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527336395] [2021-06-01 17:35:02,403 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527336395] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-01 17:35:02,404 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-01 17:35:02,404 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-01 17:35:02,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673013711] [2021-06-01 17:35:02,404 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-01 17:35:02,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-01 17:35:02,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-01 17:35:02,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-06-01 17:35:02,404 INFO L87 Difference]: Start difference. First operand 421 states and 1399 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:02,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-01 17:35:02,429 INFO L93 Difference]: Finished difference Result 420 states and 1398 transitions. [2021-06-01 17:35:02,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-01 17:35:02,430 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-06-01 17:35:02,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-01 17:35:02,430 INFO L225 Difference]: With dead ends: 420 [2021-06-01 17:35:02,430 INFO L226 Difference]: Without dead ends: 0 [2021-06-01 17:35:02,430 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 103.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-06-01 17:35:02,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-01 17:35:02,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-01 17:35:02,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:02,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-01 17:35:02,430 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2021-06-01 17:35:02,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-01 17:35:02,430 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-01 17:35:02,430 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-01 17:35:02,430 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-01 17:35:02,431 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-01 17:35:02,431 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable723 [2021-06-01 17:35:02,432 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-01 17:35:02,434 INFO L202 PluginConnector]: Adding new model example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.06 05:35:02 BasicIcfg [2021-06-01 17:35:02,434 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-01 17:35:02,435 INFO L168 Benchmark]: Toolchain (without parser) took 153965.62 ms. Allocated memory was 379.6 MB in the beginning and 1.8 GB in the end (delta: 1.4 GB). Free memory was 358.9 MB in the beginning and 1.3 GB in the end (delta: -974.3 MB). Peak memory consumption was 438.5 MB. Max. memory is 16.0 GB. [2021-06-01 17:35:02,435 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 379.6 MB. Free memory is still 359.9 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-01 17:35:02,435 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.88 ms. Allocated memory is still 379.6 MB. Free memory was 358.9 MB in the beginning and 357.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-01 17:35:02,435 INFO L168 Benchmark]: Boogie Preprocessor took 16.14 ms. Allocated memory is still 379.6 MB. Free memory was 357.4 MB in the beginning and 356.5 MB in the end (delta: 916.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-01 17:35:02,435 INFO L168 Benchmark]: RCFGBuilder took 198.26 ms. Allocated memory is still 379.6 MB. Free memory was 356.5 MB in the beginning and 346.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-06-01 17:35:02,435 INFO L168 Benchmark]: TraceAbstraction took 153718.11 ms. Allocated memory was 379.6 MB in the beginning and 1.8 GB in the end (delta: 1.4 GB). Free memory was 345.6 MB in the beginning and 1.3 GB in the end (delta: -987.6 MB). Peak memory consumption was 425.9 MB. Max. memory is 16.0 GB. [2021-06-01 17:35:02,435 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 379.6 MB. Free memory is still 359.9 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 28.88 ms. Allocated memory is still 379.6 MB. Free memory was 358.9 MB in the beginning and 357.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 16.14 ms. Allocated memory is still 379.6 MB. Free memory was 357.4 MB in the beginning and 356.5 MB in the end (delta: 916.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 198.26 ms. Allocated memory is still 379.6 MB. Free memory was 356.5 MB in the beginning and 346.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 153718.11 ms. Allocated memory was 379.6 MB in the beginning and 1.8 GB in the end (delta: 1.4 GB). Free memory was 345.6 MB in the beginning and 1.3 GB in the end (delta: -987.6 MB). Peak memory consumption was 425.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 13 procedures, 58 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 153597.4ms, OverallIterations: 724, TraceHistogramMax: 1, EmptinessCheckTime: 1777.8ms, AutomataDifference: 53144.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 415.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 76805 SDtfs, 101628 SDslu, 171869 SDs, 0 SdLazy, 25845 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14668.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5772 GetRequests, 728 SyntacticMatches, 0 SemanticMatches, 5044 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2880 ImplicationChecksByTransitivity, 73879.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=4463occurred in iteration=0, InterpolantAutomatonStates: 5772, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 31847.5ms AutomataMinimizationTime, 724 MinimizatonAttempts, 1142199 StatesRemovedByMinimization, 714 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 166.6ms SsaConstructionTime, 461.4ms SatisfiabilityAnalysisTime, 63836.9ms InterpolantComputationTime, 18100 NumberOfCodeBlocks, 18100 NumberOfCodeBlocksAsserted, 724 NumberOfCheckSat, 17376 ConstructedInterpolants, 0 QuantifiedInterpolants, 422849 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 724 InterpolantComputations, 724 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...