/usr/bin/java -Xmx8000000000 -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 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-12 18:48:38,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-12 18:48:38,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-12 18:48:38,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-12 18:48:38,202 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 [2021-08-12 18:48:38,239 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-12 18:48:38,240 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-12 18:48:38,240 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-12 18:48:38,240 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-12 18:48:38,243 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-12 18:48:38,244 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-12 18:48:38,244 INFO L138 SettingsManager]: * Use SBE=true [2021-08-12 18:48:38,244 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-12 18:48:38,244 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-12 18:48:38,244 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-12 18:48:38,245 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-12 18:48:38,245 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-12 18:48:38,245 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-12 18:48:38,246 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-12 18:48:38,246 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-12 18:48:38,246 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-12 18:48:38,246 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-12 18:48:38,246 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-12 18:48:38,246 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-12 18:48:38,247 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-12 18:48:38,247 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-12 18:48:38,247 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-12 18:48:38,247 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-12 18:48:38,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-12 18:48:38,247 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-12 18:48:38,247 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-12 18:48:38,248 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-12 18:48:38,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-12 18:48:38,248 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-12 18:48:38,248 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-12 18:48:38,248 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-12 18:48:38,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-12 18:48:38,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-12 18:48:38,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-12 18:48:38,574 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-12 18:48:38,575 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-12 18:48:38,576 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl [2021-08-12 18:48:38,577 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl' [2021-08-12 18:48:38,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-12 18:48:38,606 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-12 18:48:38,607 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-12 18:48:38,607 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-12 18:48:38,607 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-12 18:48:38,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 06:48:38" (1/1) ... [2021-08-12 18:48:38,624 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 06:48:38" (1/1) ... [2021-08-12 18:48:38,630 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-12 18:48:38,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-12 18:48:38,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-12 18:48:38,632 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-12 18:48:38,638 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 06:48:38" (1/1) ... [2021-08-12 18:48:38,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 06:48:38" (1/1) ... [2021-08-12 18:48:38,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 06:48:38" (1/1) ... [2021-08-12 18:48:38,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 06:48:38" (1/1) ... [2021-08-12 18:48:38,641 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 06:48:38" (1/1) ... [2021-08-12 18:48:38,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 06:48:38" (1/1) ... [2021-08-12 18:48:38,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 06:48:38" (1/1) ... [2021-08-12 18:48:38,643 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-12 18:48:38,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-12 18:48:38,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-12 18:48:38,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-12 18:48:38,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 06:48:38" (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 [2021-08-12 18:48:38,700 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-08-12 18:48:38,702 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-08-12 18:48:38,702 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-08-12 18:48:38,703 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-08-12 18:48:38,703 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-08-12 18:48:38,703 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-08-12 18:48:38,703 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-08-12 18:48:38,703 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-08-12 18:48:38,703 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-08-12 18:48:38,704 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-08-12 18:48:38,704 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-08-12 18:48:38,704 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-08-12 18:48:38,705 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-08-12 18:48:38,706 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-08-12 18:48:38,706 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-08-12 18:48:38,706 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-12 18:48:38,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-12 18:48:38,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-12 18:48:38,706 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-08-12 18:48:38,706 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-08-12 18:48:38,707 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-08-12 18:48:38,708 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-12 18:48:38,832 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-12 18:48:38,832 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-12 18:48:38,833 INFO L202 PluginConnector]: Adding new model example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 06:48:38 BoogieIcfgContainer [2021-08-12 18:48:38,833 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-12 18:48:38,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-12 18:48:38,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-12 18:48:38,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-12 18:48:38,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 06:48:38" (1/2) ... [2021-08-12 18:48:38,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1658e6d6 and model type example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.08 06:48:38, skipping insertion in model container [2021-08-12 18:48:38,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 06:48:38" (2/2) ... [2021-08-12 18:48:38,840 INFO L111 eAbstractionObserver]: Analyzing ICFG example_6.bpl [2021-08-12 18:48:38,845 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-12 18:48:38,845 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-12 18:48:38,846 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-12 18:48:38,912 INFO L149 ThreadInstanceAdder]: Constructed 36 joinOtherThreadTransitions. [2021-08-12 18:48:38,932 INFO L255 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-08-12 18:48:38,949 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-12 18:48:38,949 INFO L379 AbstractCegarLoop]: Hoare is true [2021-08-12 18:48:38,949 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-12 18:48:38,949 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-12 18:48:38,950 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-12 18:48:38,950 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-12 18:48:38,950 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-12 18:48:38,950 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-12 18:48:38,959 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 52 places, 63 transitions, 264 flow [2021-08-12 18:48:39,410 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) [2021-08-12 18:48:39,441 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) [2021-08-12 18:48:39,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:48:39,483 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:48:39,484 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:48:39,485 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]=== [2021-08-12 18:48:39,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:48:39,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1175608463, now seen corresponding path program 1 times [2021-08-12 18:48:39,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:48:39,501 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055984363] [2021-08-12 18:48:39,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:48:39,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:48:39,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:48:39,657 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:48:39,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055984363] [2021-08-12 18:48:39,658 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055984363] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:48:39,658 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:48:39,658 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 18:48:39,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340012567] [2021-08-12 18:48:39,663 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 18:48:39,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:48:39,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 18:48:39,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 18:48:39,712 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) [2021-08-12 18:48:40,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:48:40,045 INFO L93 Difference]: Finished difference Result 4572 states and 20091 transitions. [2021-08-12 18:48:40,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 18:48:40,051 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 [2021-08-12 18:48:40,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:48:40,122 INFO L225 Difference]: With dead ends: 4572 [2021-08-12 18:48:40,123 INFO L226 Difference]: Without dead ends: 3543 [2021-08-12 18:48:40,132 INFO L806 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 [2021-08-12 18:48:40,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3543 states. [2021-08-12 18:48:40,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3543 to 3543. [2021-08-12 18:48:40,456 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) [2021-08-12 18:48:40,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3543 states to 3543 states and 15328 transitions. [2021-08-12 18:48:40,493 INFO L78 Accepts]: Start accepts. Automaton has 3543 states and 15328 transitions. Word has length 25 [2021-08-12 18:48:40,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:48:40,495 INFO L482 AbstractCegarLoop]: Abstraction has 3543 states and 15328 transitions. [2021-08-12 18:48:40,496 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) [2021-08-12 18:48:40,496 INFO L276 IsEmpty]: Start isEmpty. Operand 3543 states and 15328 transitions. [2021-08-12 18:48:40,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:48:40,510 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:48:40,511 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:48:40,511 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-12 18:48:40,511 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]=== [2021-08-12 18:48:40,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:48:40,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1563685681, now seen corresponding path program 1 times [2021-08-12 18:48:40,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:48:40,517 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949509300] [2021-08-12 18:48:40,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:48:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:48:40,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:48:40,556 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:48:40,556 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949509300] [2021-08-12 18:48:40,556 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949509300] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:48:40,556 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:48:40,556 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 18:48:40,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180210353] [2021-08-12 18:48:40,558 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 18:48:40,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:48:40,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 18:48:40,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 18:48:40,559 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) [2021-08-12 18:48:40,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:48:40,737 INFO L93 Difference]: Finished difference Result 3545 states and 15329 transitions. [2021-08-12 18:48:40,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 18:48:40,740 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 [2021-08-12 18:48:40,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:48:40,768 INFO L225 Difference]: With dead ends: 3545 [2021-08-12 18:48:40,769 INFO L226 Difference]: Without dead ends: 2709 [2021-08-12 18:48:40,773 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 18:48:40,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2709 states. [2021-08-12 18:48:40,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2709 to 2709. [2021-08-12 18:48:40,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2709 states, 2708 states have (on average 4.263293943870015) internal successors, (11545), 2708 states have internal predecessors, (11545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:40,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2709 states to 2709 states and 11545 transitions. [2021-08-12 18:48:40,924 INFO L78 Accepts]: Start accepts. Automaton has 2709 states and 11545 transitions. Word has length 25 [2021-08-12 18:48:40,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:48:40,925 INFO L482 AbstractCegarLoop]: Abstraction has 2709 states and 11545 transitions. [2021-08-12 18:48:40,926 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) [2021-08-12 18:48:40,926 INFO L276 IsEmpty]: Start isEmpty. Operand 2709 states and 11545 transitions. [2021-08-12 18:48:40,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:48:40,965 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:48:40,965 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:48:40,965 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-12 18:48:40,965 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]=== [2021-08-12 18:48:40,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:48:40,966 INFO L82 PathProgramCache]: Analyzing trace with hash -817162979, now seen corresponding path program 1 times [2021-08-12 18:48:40,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:48:40,967 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308283768] [2021-08-12 18:48:40,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:48:40,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:48:41,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:48:41,022 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:48:41,022 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308283768] [2021-08-12 18:48:41,022 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308283768] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:48:41,023 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:48:41,023 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 18:48:41,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857720180] [2021-08-12 18:48:41,023 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 18:48:41,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:48:41,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 18:48:41,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 18:48:41,024 INFO L87 Difference]: Start difference. First operand 2709 states and 11545 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) [2021-08-12 18:48:41,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:48:41,149 INFO L93 Difference]: Finished difference Result 2714 states and 11549 transitions. [2021-08-12 18:48:41,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 18:48:41,154 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 [2021-08-12 18:48:41,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:48:41,177 INFO L225 Difference]: With dead ends: 2714 [2021-08-12 18:48:41,177 INFO L226 Difference]: Without dead ends: 2106 [2021-08-12 18:48:41,180 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 18:48:41,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2021-08-12 18:48:41,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 2106. [2021-08-12 18:48:41,285 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) [2021-08-12 18:48:41,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 8830 transitions. [2021-08-12 18:48:41,341 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 8830 transitions. Word has length 25 [2021-08-12 18:48:41,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:48:41,342 INFO L482 AbstractCegarLoop]: Abstraction has 2106 states and 8830 transitions. [2021-08-12 18:48:41,342 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) [2021-08-12 18:48:41,342 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 8830 transitions. [2021-08-12 18:48:41,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:48:41,349 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:48:41,350 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:48:41,350 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-12 18:48:41,350 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]=== [2021-08-12 18:48:41,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:48:41,351 INFO L82 PathProgramCache]: Analyzing trace with hash -407784791, now seen corresponding path program 1 times [2021-08-12 18:48:41,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:48:41,352 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932605377] [2021-08-12 18:48:41,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:48:41,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:48:41,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:48:41,404 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:48:41,404 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932605377] [2021-08-12 18:48:41,405 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932605377] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:48:41,405 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:48:41,405 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 18:48:41,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063266088] [2021-08-12 18:48:41,406 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 18:48:41,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:48:41,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 18:48:41,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 18:48:41,407 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) [2021-08-12 18:48:41,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:48:41,512 INFO L93 Difference]: Finished difference Result 2309 states and 9398 transitions. [2021-08-12 18:48:41,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 18:48:41,513 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 [2021-08-12 18:48:41,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:48:41,531 INFO L225 Difference]: With dead ends: 2309 [2021-08-12 18:48:41,531 INFO L226 Difference]: Without dead ends: 1863 [2021-08-12 18:48:41,534 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 18:48:41,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2021-08-12 18:48:41,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 1863. [2021-08-12 18:48:41,618 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) [2021-08-12 18:48:41,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 7615 transitions. [2021-08-12 18:48:41,631 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 7615 transitions. Word has length 25 [2021-08-12 18:48:41,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:48:41,632 INFO L482 AbstractCegarLoop]: Abstraction has 1863 states and 7615 transitions. [2021-08-12 18:48:41,632 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) [2021-08-12 18:48:41,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 7615 transitions. [2021-08-12 18:48:41,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:48:41,639 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:48:41,639 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:48:41,639 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-12 18:48:41,640 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]=== [2021-08-12 18:48:41,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:48:41,640 INFO L82 PathProgramCache]: Analyzing trace with hash 447521863, now seen corresponding path program 1 times [2021-08-12 18:48:41,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:48:41,641 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033722259] [2021-08-12 18:48:41,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:48:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:48:41,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:48:41,684 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:48:41,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033722259] [2021-08-12 18:48:41,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033722259] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:48:41,685 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:48:41,685 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 18:48:41,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912303557] [2021-08-12 18:48:41,685 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 18:48:41,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:48:41,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 18:48:41,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 18:48:41,686 INFO L87 Difference]: Start difference. First operand 1863 states and 7615 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) [2021-08-12 18:48:41,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:48:41,834 INFO L93 Difference]: Finished difference Result 1904 states and 7697 transitions. [2021-08-12 18:48:41,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 18:48:41,835 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 [2021-08-12 18:48:41,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:48:41,870 INFO L225 Difference]: With dead ends: 1904 [2021-08-12 18:48:41,871 INFO L226 Difference]: Without dead ends: 1458 [2021-08-12 18:48:41,873 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 18:48:41,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2021-08-12 18:48:41,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1458. [2021-08-12 18:48:41,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 1457 states have (on average 4.003431708991077) internal successors, (5833), 1457 states have internal predecessors, (5833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:41,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 5833 transitions. [2021-08-12 18:48:41,948 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 5833 transitions. Word has length 25 [2021-08-12 18:48:41,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:48:41,949 INFO L482 AbstractCegarLoop]: Abstraction has 1458 states and 5833 transitions. [2021-08-12 18:48:41,949 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) [2021-08-12 18:48:41,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 5833 transitions. [2021-08-12 18:48:41,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:48:41,954 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:48:41,954 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:48:41,954 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-12 18:48:41,954 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]=== [2021-08-12 18:48:41,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:48:41,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1957625315, now seen corresponding path program 1 times [2021-08-12 18:48:41,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:48:41,956 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233577721] [2021-08-12 18:48:41,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:48:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:48:42,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:48:42,257 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:48:42,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233577721] [2021-08-12 18:48:42,257 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233577721] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:48:42,257 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:48:42,258 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:48:42,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289163729] [2021-08-12 18:48:42,258 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:48:42,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:48:42,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:48:42,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:48:42,259 INFO L87 Difference]: Start difference. First operand 1458 states and 5833 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:42,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:48:42,607 INFO L93 Difference]: Finished difference Result 3168 states and 11760 transitions. [2021-08-12 18:48:42,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:48:42,607 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 [2021-08-12 18:48:42,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:48:42,624 INFO L225 Difference]: With dead ends: 3168 [2021-08-12 18:48:42,625 INFO L226 Difference]: Without dead ends: 3008 [2021-08-12 18:48:42,626 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 164.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:48:42,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2021-08-12 18:48:42,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 1530. [2021-08-12 18:48:42,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1530 states, 1529 states have (on average 3.998037933289732) internal successors, (6113), 1529 states have internal predecessors, (6113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:42,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 6113 transitions. [2021-08-12 18:48:42,733 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 6113 transitions. Word has length 25 [2021-08-12 18:48:42,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:48:42,733 INFO L482 AbstractCegarLoop]: Abstraction has 1530 states and 6113 transitions. [2021-08-12 18:48:42,733 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:42,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 6113 transitions. [2021-08-12 18:48:42,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:48:42,738 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:48:42,738 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:48:42,739 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-12 18:48:42,739 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]=== [2021-08-12 18:48:42,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:48:42,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1329043997, now seen corresponding path program 2 times [2021-08-12 18:48:42,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:48:42,739 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161345972] [2021-08-12 18:48:42,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:48:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:48:42,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:48:42,911 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:48:42,911 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161345972] [2021-08-12 18:48:42,911 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161345972] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:48:42,911 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:48:42,911 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:48:42,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388369389] [2021-08-12 18:48:42,912 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:48:42,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:48:42,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:48:42,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:48:42,913 INFO L87 Difference]: Start difference. First operand 1530 states and 6113 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:43,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:48:43,330 INFO L93 Difference]: Finished difference Result 3231 states and 11967 transitions. [2021-08-12 18:48:43,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:48:43,331 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 [2021-08-12 18:48:43,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:48:43,348 INFO L225 Difference]: With dead ends: 3231 [2021-08-12 18:48:43,348 INFO L226 Difference]: Without dead ends: 2976 [2021-08-12 18:48:43,350 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 134.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:48:43,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2976 states. [2021-08-12 18:48:43,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2976 to 1498. [2021-08-12 18:48:43,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1497 states have (on average 3.997995991983968) internal successors, (5985), 1497 states have internal predecessors, (5985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:43,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 5985 transitions. [2021-08-12 18:48:43,473 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 5985 transitions. Word has length 25 [2021-08-12 18:48:43,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:48:43,474 INFO L482 AbstractCegarLoop]: Abstraction has 1498 states and 5985 transitions. [2021-08-12 18:48:43,474 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) [2021-08-12 18:48:43,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 5985 transitions. [2021-08-12 18:48:43,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:48:43,479 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:48:43,479 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:48:43,479 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-12 18:48:43,479 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]=== [2021-08-12 18:48:43,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:48:43,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1919010631, now seen corresponding path program 3 times [2021-08-12 18:48:43,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:48:43,480 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678716698] [2021-08-12 18:48:43,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:48:43,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:48:43,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:48:43,649 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:48:43,649 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678716698] [2021-08-12 18:48:43,650 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678716698] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:48:43,650 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:48:43,650 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:48:43,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812373090] [2021-08-12 18:48:43,650 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:48:43,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:48:43,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:48:43,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:48:43,651 INFO L87 Difference]: Start difference. First operand 1498 states and 5985 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:44,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:48:44,094 INFO L93 Difference]: Finished difference Result 3119 states and 11566 transitions. [2021-08-12 18:48:44,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:48:44,094 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 [2021-08-12 18:48:44,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:48:44,111 INFO L225 Difference]: With dead ends: 3119 [2021-08-12 18:48:44,111 INFO L226 Difference]: Without dead ends: 2959 [2021-08-12 18:48:44,114 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 144.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:48:44,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2021-08-12 18:48:44,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 1514. [2021-08-12 18:48:44,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 1513 states have (on average 3.9874421678783873) internal successors, (6033), 1513 states have internal predecessors, (6033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:44,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 6033 transitions. [2021-08-12 18:48:44,233 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 6033 transitions. Word has length 25 [2021-08-12 18:48:44,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:48:44,233 INFO L482 AbstractCegarLoop]: Abstraction has 1514 states and 6033 transitions. [2021-08-12 18:48:44,234 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) [2021-08-12 18:48:44,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 6033 transitions. [2021-08-12 18:48:44,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:48:44,238 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:48:44,238 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:48:44,239 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-12 18:48:44,239 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]=== [2021-08-12 18:48:44,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:48:44,239 INFO L82 PathProgramCache]: Analyzing trace with hash 786021915, now seen corresponding path program 4 times [2021-08-12 18:48:44,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:48:44,240 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268528497] [2021-08-12 18:48:44,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:48:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:48:44,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:48:44,400 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:48:44,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268528497] [2021-08-12 18:48:44,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268528497] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:48:44,400 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:48:44,400 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:48:44,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558339541] [2021-08-12 18:48:44,401 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:48:44,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:48:44,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:48:44,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:48:44,401 INFO L87 Difference]: Start difference. First operand 1514 states and 6033 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:44,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:48:44,795 INFO L93 Difference]: Finished difference Result 3149 states and 11659 transitions. [2021-08-12 18:48:44,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:48:44,796 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:48:44,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:48:44,811 INFO L225 Difference]: With dead ends: 3149 [2021-08-12 18:48:44,811 INFO L226 Difference]: Without dead ends: 2943 [2021-08-12 18:48:44,813 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 149.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:48:44,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2943 states. [2021-08-12 18:48:44,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2943 to 1498. [2021-08-12 18:48:44,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1497 states have (on average 3.9926519706078825) internal successors, (5977), 1497 states have internal predecessors, (5977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:44,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 5977 transitions. [2021-08-12 18:48:44,924 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 5977 transitions. Word has length 25 [2021-08-12 18:48:44,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:48:44,925 INFO L482 AbstractCegarLoop]: Abstraction has 1498 states and 5977 transitions. [2021-08-12 18:48:44,925 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:44,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 5977 transitions. [2021-08-12 18:48:44,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:48:44,932 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:48:44,932 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:48:44,932 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-12 18:48:44,932 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]=== [2021-08-12 18:48:44,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:48:44,933 INFO L82 PathProgramCache]: Analyzing trace with hash 147858429, now seen corresponding path program 5 times [2021-08-12 18:48:44,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:48:44,933 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157949731] [2021-08-12 18:48:44,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:48:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:48:45,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:48:45,075 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:48:45,075 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157949731] [2021-08-12 18:48:45,075 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157949731] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:48:45,075 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:48:45,075 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:48:45,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682557139] [2021-08-12 18:48:45,076 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:48:45,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:48:45,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:48:45,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:48:45,077 INFO L87 Difference]: Start difference. First operand 1498 states and 5977 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:45,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:48:45,495 INFO L93 Difference]: Finished difference Result 3259 states and 12064 transitions. [2021-08-12 18:48:45,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:48:45,495 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:48:45,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:48:45,511 INFO L225 Difference]: With dead ends: 3259 [2021-08-12 18:48:45,512 INFO L226 Difference]: Without dead ends: 3069 [2021-08-12 18:48:45,513 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 141.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:48:45,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3069 states. [2021-08-12 18:48:45,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3069 to 1561. [2021-08-12 18:48:45,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1561 states, 1560 states have (on average 3.9641025641025642) internal successors, (6184), 1560 states have internal predecessors, (6184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:45,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 6184 transitions. [2021-08-12 18:48:45,630 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 6184 transitions. Word has length 25 [2021-08-12 18:48:45,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:48:45,631 INFO L482 AbstractCegarLoop]: Abstraction has 1561 states and 6184 transitions. [2021-08-12 18:48:45,631 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) [2021-08-12 18:48:45,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 6184 transitions. [2021-08-12 18:48:45,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:48:45,635 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:48:45,636 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:48:45,636 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-12 18:48:45,636 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]=== [2021-08-12 18:48:45,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:48:45,636 INFO L82 PathProgramCache]: Analyzing trace with hash 445911387, now seen corresponding path program 6 times [2021-08-12 18:48:45,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:48:45,637 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707944431] [2021-08-12 18:48:45,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:48:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:48:45,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:48:45,809 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:48:45,809 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707944431] [2021-08-12 18:48:45,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707944431] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:48:45,809 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:48:45,809 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:48:45,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405483067] [2021-08-12 18:48:45,810 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:48:45,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:48:45,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:48:45,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:48:45,812 INFO L87 Difference]: Start difference. First operand 1561 states and 6184 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:46,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:48:46,230 INFO L93 Difference]: Finished difference Result 3292 states and 12147 transitions. [2021-08-12 18:48:46,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:48:46,231 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:48:46,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:48:46,248 INFO L225 Difference]: With dead ends: 3292 [2021-08-12 18:48:46,248 INFO L226 Difference]: Without dead ends: 2982 [2021-08-12 18:48:46,251 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 124.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:48:46,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2982 states. [2021-08-12 18:48:46,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2982 to 1474. [2021-08-12 18:48:46,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1473 states have (on average 3.9979633401221997) internal successors, (5889), 1473 states have internal predecessors, (5889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:46,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 5889 transitions. [2021-08-12 18:48:46,368 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 5889 transitions. Word has length 25 [2021-08-12 18:48:46,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:48:46,368 INFO L482 AbstractCegarLoop]: Abstraction has 1474 states and 5889 transitions. [2021-08-12 18:48:46,368 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) [2021-08-12 18:48:46,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 5889 transitions. [2021-08-12 18:48:46,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:48:46,372 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:48:46,372 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:48:46,372 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-12 18:48:46,373 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]=== [2021-08-12 18:48:46,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:48:46,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1934855229, now seen corresponding path program 7 times [2021-08-12 18:48:46,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:48:46,373 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604076826] [2021-08-12 18:48:46,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:48:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:48:46,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:48:46,534 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:48:46,534 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604076826] [2021-08-12 18:48:46,534 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604076826] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:48:46,534 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:48:46,534 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:48:46,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818712200] [2021-08-12 18:48:46,535 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:48:46,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:48:46,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:48:46,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:48:46,536 INFO L87 Difference]: Start difference. First operand 1474 states and 5889 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:46,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:48:46,927 INFO L93 Difference]: Finished difference Result 3141 states and 11664 transitions. [2021-08-12 18:48:46,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:48:46,927 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:48:46,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:48:46,943 INFO L225 Difference]: With dead ends: 3141 [2021-08-12 18:48:46,944 INFO L226 Difference]: Without dead ends: 2981 [2021-08-12 18:48:46,946 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 153.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:48:46,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2021-08-12 18:48:47,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 1522. [2021-08-12 18:48:47,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1522 states, 1521 states have (on average 3.992767915844839) internal successors, (6073), 1521 states have internal predecessors, (6073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:47,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 6073 transitions. [2021-08-12 18:48:47,068 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 6073 transitions. Word has length 25 [2021-08-12 18:48:47,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:48:47,068 INFO L482 AbstractCegarLoop]: Abstraction has 1522 states and 6073 transitions. [2021-08-12 18:48:47,068 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) [2021-08-12 18:48:47,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 6073 transitions. [2021-08-12 18:48:47,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:48:47,072 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:48:47,072 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:48:47,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-12 18:48:47,073 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]=== [2021-08-12 18:48:47,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:48:47,073 INFO L82 PathProgramCache]: Analyzing trace with hash 926557245, now seen corresponding path program 8 times [2021-08-12 18:48:47,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:48:47,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642973986] [2021-08-12 18:48:47,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:48:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:48:47,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:48:47,228 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:48:47,228 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642973986] [2021-08-12 18:48:47,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642973986] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:48:47,229 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:48:47,229 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:48:47,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607908200] [2021-08-12 18:48:47,229 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:48:47,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:48:47,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:48:47,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:48:47,230 INFO L87 Difference]: Start difference. First operand 1522 states and 6073 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:47,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:48:47,707 INFO L93 Difference]: Finished difference Result 3204 states and 11871 transitions. [2021-08-12 18:48:47,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:48:47,708 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:48:47,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:48:47,723 INFO L225 Difference]: With dead ends: 3204 [2021-08-12 18:48:47,724 INFO L226 Difference]: Without dead ends: 2949 [2021-08-12 18:48:47,726 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 129.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:48:47,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2949 states. [2021-08-12 18:48:47,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2949 to 1490. [2021-08-12 18:48:47,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1490 states, 1489 states have (on average 3.992612491605104) internal successors, (5945), 1489 states have internal predecessors, (5945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:47,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 5945 transitions. [2021-08-12 18:48:47,848 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 5945 transitions. Word has length 25 [2021-08-12 18:48:47,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:48:47,848 INFO L482 AbstractCegarLoop]: Abstraction has 1490 states and 5945 transitions. [2021-08-12 18:48:47,848 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:47,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 5945 transitions. [2021-08-12 18:48:47,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:48:47,852 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:48:47,852 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:48:47,852 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-12 18:48:47,853 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]=== [2021-08-12 18:48:47,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:48:47,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1371078561, now seen corresponding path program 9 times [2021-08-12 18:48:47,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:48:47,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756290778] [2021-08-12 18:48:47,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:48:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:48:48,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:48:48,011 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:48:48,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756290778] [2021-08-12 18:48:48,012 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756290778] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:48:48,012 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:48:48,012 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:48:48,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897159970] [2021-08-12 18:48:48,012 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:48:48,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:48:48,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:48:48,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:48:48,013 INFO L87 Difference]: Start difference. First operand 1490 states and 5945 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:48,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:48:48,417 INFO L93 Difference]: Finished difference Result 3090 states and 11465 transitions. [2021-08-12 18:48:48,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:48:48,418 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:48:48,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:48:48,429 INFO L225 Difference]: With dead ends: 3090 [2021-08-12 18:48:48,430 INFO L226 Difference]: Without dead ends: 2930 [2021-08-12 18:48:48,431 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 143.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:48:48,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2021-08-12 18:48:48,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1506. [2021-08-12 18:48:48,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 3.9820598006644516) internal successors, (5993), 1505 states have internal predecessors, (5993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:48,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 5993 transitions. [2021-08-12 18:48:48,546 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 5993 transitions. Word has length 25 [2021-08-12 18:48:48,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:48:48,546 INFO L482 AbstractCegarLoop]: Abstraction has 1506 states and 5993 transitions. [2021-08-12 18:48:48,547 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) [2021-08-12 18:48:48,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 5993 transitions. [2021-08-12 18:48:48,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:48:48,550 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:48:48,550 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:48:48,550 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-12 18:48:48,551 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]=== [2021-08-12 18:48:48,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:48:48,551 INFO L82 PathProgramCache]: Analyzing trace with hash -362780577, now seen corresponding path program 10 times [2021-08-12 18:48:48,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:48:48,551 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391617104] [2021-08-12 18:48:48,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:48:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:48:48,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:48:48,704 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:48:48,704 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391617104] [2021-08-12 18:48:48,704 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391617104] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:48:48,704 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:48:48,704 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:48:48,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094871741] [2021-08-12 18:48:48,704 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:48:48,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:48:48,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:48:48,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:48:48,705 INFO L87 Difference]: Start difference. First operand 1506 states and 5993 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:49,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:48:49,140 INFO L93 Difference]: Finished difference Result 3118 states and 11553 transitions. [2021-08-12 18:48:49,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:48:49,141 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:48:49,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:48:49,150 INFO L225 Difference]: With dead ends: 3118 [2021-08-12 18:48:49,150 INFO L226 Difference]: Without dead ends: 2914 [2021-08-12 18:48:49,152 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 149.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:48:49,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2021-08-12 18:48:49,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 1490. [2021-08-12 18:48:49,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1490 states, 1489 states have (on average 3.987239758226998) internal successors, (5937), 1489 states have internal predecessors, (5937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:49,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 5937 transitions. [2021-08-12 18:48:49,275 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 5937 transitions. Word has length 25 [2021-08-12 18:48:49,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:48:49,275 INFO L482 AbstractCegarLoop]: Abstraction has 1490 states and 5937 transitions. [2021-08-12 18:48:49,275 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) [2021-08-12 18:48:49,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 5937 transitions. [2021-08-12 18:48:49,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:48:49,280 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:48:49,280 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:48:49,280 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-12 18:48:49,280 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]=== [2021-08-12 18:48:49,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:48:49,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1325465695, now seen corresponding path program 11 times [2021-08-12 18:48:49,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:48:49,281 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832456747] [2021-08-12 18:48:49,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:48:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:48:49,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:48:49,491 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:48:49,491 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832456747] [2021-08-12 18:48:49,491 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832456747] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:48:49,492 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:48:49,492 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:48:49,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442345969] [2021-08-12 18:48:49,492 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:48:49,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:48:49,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:48:49,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:48:49,493 INFO L87 Difference]: Start difference. First operand 1490 states and 5937 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:49,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:48:49,991 INFO L93 Difference]: Finished difference Result 3211 states and 11907 transitions. [2021-08-12 18:48:49,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:48:49,991 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:48:49,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:48:50,001 INFO L225 Difference]: With dead ends: 3211 [2021-08-12 18:48:50,001 INFO L226 Difference]: Without dead ends: 3023 [2021-08-12 18:48:50,003 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 200.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:48:50,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3023 states. [2021-08-12 18:48:50,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3023 to 1536. [2021-08-12 18:48:50,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1536 states, 1535 states have (on average 3.9700325732899024) internal successors, (6094), 1535 states have internal predecessors, (6094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:50,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1536 states to 1536 states and 6094 transitions. [2021-08-12 18:48:50,122 INFO L78 Accepts]: Start accepts. Automaton has 1536 states and 6094 transitions. Word has length 25 [2021-08-12 18:48:50,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:48:50,123 INFO L482 AbstractCegarLoop]: Abstraction has 1536 states and 6094 transitions. [2021-08-12 18:48:50,123 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) [2021-08-12 18:48:50,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1536 states and 6094 transitions. [2021-08-12 18:48:50,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:48:50,127 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:48:50,127 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:48:50,127 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-12 18:48:50,128 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]=== [2021-08-12 18:48:50,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:48:50,128 INFO L82 PathProgramCache]: Analyzing trace with hash 972326205, now seen corresponding path program 12 times [2021-08-12 18:48:50,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:48:50,128 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998819477] [2021-08-12 18:48:50,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:48:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:48:50,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:48:50,256 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:48:50,256 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998819477] [2021-08-12 18:48:50,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998819477] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:48:50,257 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:48:50,257 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:48:50,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639756555] [2021-08-12 18:48:50,257 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:48:50,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:48:50,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:48:50,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:48:50,258 INFO L87 Difference]: Start difference. First operand 1536 states and 6094 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:50,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:48:50,754 INFO L93 Difference]: Finished difference Result 3246 states and 11996 transitions. [2021-08-12 18:48:50,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:48:50,754 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:48:50,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:48:50,764 INFO L225 Difference]: With dead ends: 3246 [2021-08-12 18:48:50,764 INFO L226 Difference]: Without dead ends: 2961 [2021-08-12 18:48:50,765 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 122.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:48:50,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2021-08-12 18:48:50,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1474. [2021-08-12 18:48:50,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1473 states have (on average 3.992532247114732) internal successors, (5881), 1473 states have internal predecessors, (5881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:50,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 5881 transitions. [2021-08-12 18:48:50,872 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 5881 transitions. Word has length 25 [2021-08-12 18:48:50,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:48:50,872 INFO L482 AbstractCegarLoop]: Abstraction has 1474 states and 5881 transitions. [2021-08-12 18:48:50,873 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:50,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 5881 transitions. [2021-08-12 18:48:50,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:48:50,875 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:48:50,875 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:48:50,875 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-12 18:48:50,876 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]=== [2021-08-12 18:48:50,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:48:50,876 INFO L82 PathProgramCache]: Analyzing trace with hash 296831769, now seen corresponding path program 13 times [2021-08-12 18:48:50,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:48:50,876 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463058822] [2021-08-12 18:48:50,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:48:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:48:51,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:48:51,009 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:48:51,009 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463058822] [2021-08-12 18:48:51,009 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463058822] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:48:51,009 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:48:51,009 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:48:51,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611726330] [2021-08-12 18:48:51,010 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:48:51,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:48:51,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:48:51,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:48:51,010 INFO L87 Difference]: Start difference. First operand 1474 states and 5881 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:51,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:48:51,496 INFO L93 Difference]: Finished difference Result 3019 states and 11200 transitions. [2021-08-12 18:48:51,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:48:51,497 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 [2021-08-12 18:48:51,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:48:51,506 INFO L225 Difference]: With dead ends: 3019 [2021-08-12 18:48:51,506 INFO L226 Difference]: Without dead ends: 2859 [2021-08-12 18:48:51,508 INFO L806 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 [2021-08-12 18:48:51,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2859 states. [2021-08-12 18:48:51,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2859 to 1498. [2021-08-12 18:48:51,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1497 states have (on average 3.984635938543754) internal successors, (5965), 1497 states have internal predecessors, (5965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:51,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 5965 transitions. [2021-08-12 18:48:51,617 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 5965 transitions. Word has length 25 [2021-08-12 18:48:51,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:48:51,617 INFO L482 AbstractCegarLoop]: Abstraction has 1498 states and 5965 transitions. [2021-08-12 18:48:51,617 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) [2021-08-12 18:48:51,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 5965 transitions. [2021-08-12 18:48:51,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:48:51,620 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:48:51,620 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:48:51,620 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-12 18:48:51,621 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]=== [2021-08-12 18:48:51,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:48:51,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1293102981, now seen corresponding path program 14 times [2021-08-12 18:48:51,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:48:51,621 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311057715] [2021-08-12 18:48:51,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:48:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:48:51,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:48:51,756 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:48:51,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311057715] [2021-08-12 18:48:51,756 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311057715] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:48:51,756 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:48:51,756 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:48:51,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131854702] [2021-08-12 18:48:51,757 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:48:51,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:48:51,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:48:51,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:48:51,757 INFO L87 Difference]: Start difference. First operand 1498 states and 5965 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:52,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:48:52,404 INFO L93 Difference]: Finished difference Result 3049 states and 11293 transitions. [2021-08-12 18:48:52,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:48:52,404 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 [2021-08-12 18:48:52,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:48:52,416 INFO L225 Difference]: With dead ends: 3049 [2021-08-12 18:48:52,416 INFO L226 Difference]: Without dead ends: 2843 [2021-08-12 18:48:52,417 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 141.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:48:52,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2843 states. [2021-08-12 18:48:52,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2843 to 1482. [2021-08-12 18:48:52,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1481 states have (on average 3.9898717083051993) internal successors, (5909), 1481 states have internal predecessors, (5909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:52,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 5909 transitions. [2021-08-12 18:48:52,534 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 5909 transitions. Word has length 25 [2021-08-12 18:48:52,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:48:52,534 INFO L482 AbstractCegarLoop]: Abstraction has 1482 states and 5909 transitions. [2021-08-12 18:48:52,535 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:52,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 5909 transitions. [2021-08-12 18:48:52,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:48:52,538 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:48:52,538 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:48:52,539 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-12 18:48:52,539 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]=== [2021-08-12 18:48:52,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:48:52,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1377894395, now seen corresponding path program 15 times [2021-08-12 18:48:52,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:48:52,539 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608608430] [2021-08-12 18:48:52,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:48:52,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:48:52,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:48:52,673 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:48:52,674 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608608430] [2021-08-12 18:48:52,674 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608608430] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:48:52,674 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:48:52,674 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:48:52,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344232490] [2021-08-12 18:48:52,674 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:48:52,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:48:52,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:48:52,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:48:52,675 INFO L87 Difference]: Start difference. First operand 1482 states and 5909 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:53,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:48:53,166 INFO L93 Difference]: Finished difference Result 3017 states and 11187 transitions. [2021-08-12 18:48:53,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:48:53,167 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:48:53,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:48:53,176 INFO L225 Difference]: With dead ends: 3017 [2021-08-12 18:48:53,176 INFO L226 Difference]: Without dead ends: 2857 [2021-08-12 18:48:53,178 INFO L806 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 [2021-08-12 18:48:53,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2021-08-12 18:48:53,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 1498. [2021-08-12 18:48:53,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1497 states have (on average 3.979291917167669) internal successors, (5957), 1497 states have internal predecessors, (5957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:53,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 5957 transitions. [2021-08-12 18:48:53,335 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 5957 transitions. Word has length 25 [2021-08-12 18:48:53,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:48:53,335 INFO L482 AbstractCegarLoop]: Abstraction has 1498 states and 5957 transitions. [2021-08-12 18:48:53,335 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) [2021-08-12 18:48:53,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 5957 transitions. [2021-08-12 18:48:53,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:48:53,339 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:48:53,339 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:48:53,340 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-12 18:48:53,340 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]=== [2021-08-12 18:48:53,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:48:53,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1908774917, now seen corresponding path program 16 times [2021-08-12 18:48:53,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:48:53,340 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738810063] [2021-08-12 18:48:53,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:48:53,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:48:53,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:48:53,505 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:48:53,505 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738810063] [2021-08-12 18:48:53,505 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738810063] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:48:53,505 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:48:53,505 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:48:53,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745705585] [2021-08-12 18:48:53,506 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:48:53,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:48:53,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:48:53,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:48:53,506 INFO L87 Difference]: Start difference. First operand 1498 states and 5957 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:54,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:48:54,117 INFO L93 Difference]: Finished difference Result 3045 states and 11275 transitions. [2021-08-12 18:48:54,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:48:54,118 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 [2021-08-12 18:48:54,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:48:54,128 INFO L225 Difference]: With dead ends: 3045 [2021-08-12 18:48:54,128 INFO L226 Difference]: Without dead ends: 2841 [2021-08-12 18:48:54,129 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 183.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:48:54,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2841 states. [2021-08-12 18:48:54,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2841 to 1482. [2021-08-12 18:48:54,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1481 states have (on average 3.9844699527346386) internal successors, (5901), 1481 states have internal predecessors, (5901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:54,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 5901 transitions. [2021-08-12 18:48:54,229 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 5901 transitions. Word has length 25 [2021-08-12 18:48:54,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:48:54,229 INFO L482 AbstractCegarLoop]: Abstraction has 1482 states and 5901 transitions. [2021-08-12 18:48:54,229 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:54,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 5901 transitions. [2021-08-12 18:48:54,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:48:54,232 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:48:54,232 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:48:54,232 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-12 18:48:54,232 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]=== [2021-08-12 18:48:54,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:48:54,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1499910947, now seen corresponding path program 17 times [2021-08-12 18:48:54,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:48:54,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208012033] [2021-08-12 18:48:54,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:48:54,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:48:54,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:48:54,367 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:48:54,367 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208012033] [2021-08-12 18:48:54,367 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208012033] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:48:54,367 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:48:54,367 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:48:54,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963527167] [2021-08-12 18:48:54,367 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:48:54,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:48:54,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:48:54,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:48:54,368 INFO L87 Difference]: Start difference. First operand 1482 states and 5901 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:54,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:48:54,983 INFO L93 Difference]: Finished difference Result 3091 states and 11456 transitions. [2021-08-12 18:48:54,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:48:54,984 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:48:54,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:48:54,994 INFO L225 Difference]: With dead ends: 3091 [2021-08-12 18:48:54,994 INFO L226 Difference]: Without dead ends: 2901 [2021-08-12 18:48:54,996 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 140.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:48:55,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2021-08-12 18:48:55,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 1512. [2021-08-12 18:48:55,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1511 states have (on average 3.966909331568498) internal successors, (5994), 1511 states have internal predecessors, (5994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:55,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 5994 transitions. [2021-08-12 18:48:55,109 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 5994 transitions. Word has length 25 [2021-08-12 18:48:55,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:48:55,109 INFO L482 AbstractCegarLoop]: Abstraction has 1512 states and 5994 transitions. [2021-08-12 18:48:55,109 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) [2021-08-12 18:48:55,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 5994 transitions. [2021-08-12 18:48:55,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:48:55,113 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:48:55,113 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:48:55,113 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-12 18:48:55,114 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]=== [2021-08-12 18:48:55,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:48:55,114 INFO L82 PathProgramCache]: Analyzing trace with hash 751719355, now seen corresponding path program 18 times [2021-08-12 18:48:55,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:48:55,114 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994643704] [2021-08-12 18:48:55,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:48:55,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:48:55,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:48:55,236 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:48:55,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994643704] [2021-08-12 18:48:55,236 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994643704] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:48:55,236 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:48:55,236 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:48:55,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457917104] [2021-08-12 18:48:55,237 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:48:55,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:48:55,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:48:55,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:48:55,237 INFO L87 Difference]: Start difference. First operand 1512 states and 5994 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:55,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:48:55,909 INFO L93 Difference]: Finished difference Result 3089 states and 11421 transitions. [2021-08-12 18:48:55,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:48:55,909 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 [2021-08-12 18:48:55,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:48:55,922 INFO L225 Difference]: With dead ends: 3089 [2021-08-12 18:48:55,922 INFO L226 Difference]: Without dead ends: 2863 [2021-08-12 18:48:55,923 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 141.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:48:55,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2863 states. [2021-08-12 18:48:56,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2863 to 1474. [2021-08-12 18:48:56,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1473 states have (on average 3.989816700610998) internal successors, (5877), 1473 states have internal predecessors, (5877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:56,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 5877 transitions. [2021-08-12 18:48:56,064 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 5877 transitions. Word has length 25 [2021-08-12 18:48:56,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:48:56,065 INFO L482 AbstractCegarLoop]: Abstraction has 1474 states and 5877 transitions. [2021-08-12 18:48:56,065 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:56,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 5877 transitions. [2021-08-12 18:48:56,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:48:56,068 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:48:56,068 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:48:56,069 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-08-12 18:48:56,069 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]=== [2021-08-12 18:48:56,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:48:56,069 INFO L82 PathProgramCache]: Analyzing trace with hash -594697665, now seen corresponding path program 19 times [2021-08-12 18:48:56,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:48:56,070 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039320237] [2021-08-12 18:48:56,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:48:56,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:48:56,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:48:56,201 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:48:56,201 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039320237] [2021-08-12 18:48:56,201 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039320237] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:48:56,201 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:48:56,201 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:48:56,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432614259] [2021-08-12 18:48:56,201 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:48:56,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:48:56,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:48:56,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:48:56,202 INFO L87 Difference]: Start difference. First operand 1474 states and 5877 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:56,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:48:56,904 INFO L93 Difference]: Finished difference Result 3262 states and 12105 transitions. [2021-08-12 18:48:56,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:48:56,905 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 [2021-08-12 18:48:56,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:48:56,918 INFO L225 Difference]: With dead ends: 3262 [2021-08-12 18:48:56,918 INFO L226 Difference]: Without dead ends: 3072 [2021-08-12 18:48:56,919 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 136.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:48:56,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3072 states. [2021-08-12 18:48:57,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3072 to 1543. [2021-08-12 18:48:57,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1542 states have (on average 3.970817120622568) internal successors, (6123), 1542 states have internal predecessors, (6123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:57,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 6123 transitions. [2021-08-12 18:48:57,072 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 6123 transitions. Word has length 25 [2021-08-12 18:48:57,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:48:57,072 INFO L482 AbstractCegarLoop]: Abstraction has 1543 states and 6123 transitions. [2021-08-12 18:48:57,073 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) [2021-08-12 18:48:57,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 6123 transitions. [2021-08-12 18:48:57,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:48:57,076 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:48:57,077 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:48:57,077 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-08-12 18:48:57,077 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]=== [2021-08-12 18:48:57,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:48:57,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1656932637, now seen corresponding path program 20 times [2021-08-12 18:48:57,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:48:57,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515220446] [2021-08-12 18:48:57,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:48:57,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:48:57,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:48:57,194 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:48:57,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515220446] [2021-08-12 18:48:57,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515220446] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:48:57,195 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:48:57,195 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:48:57,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626921234] [2021-08-12 18:48:57,195 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:48:57,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:48:57,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:48:57,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:48:57,196 INFO L87 Difference]: Start difference. First operand 1543 states and 6123 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:57,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:48:57,980 INFO L93 Difference]: Finished difference Result 3260 states and 12070 transitions. [2021-08-12 18:48:57,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:48:57,981 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 [2021-08-12 18:48:57,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:48:57,991 INFO L225 Difference]: With dead ends: 3260 [2021-08-12 18:48:57,991 INFO L226 Difference]: Without dead ends: 3042 [2021-08-12 18:48:57,992 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 130.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:48:58,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2021-08-12 18:48:58,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 1513. [2021-08-12 18:48:58,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1513 states, 1512 states have (on average 3.9781746031746033) internal successors, (6015), 1512 states have internal predecessors, (6015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:58,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 6015 transitions. [2021-08-12 18:48:58,143 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 6015 transitions. Word has length 25 [2021-08-12 18:48:58,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:48:58,143 INFO L482 AbstractCegarLoop]: Abstraction has 1513 states and 6015 transitions. [2021-08-12 18:48:58,143 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) [2021-08-12 18:48:58,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 6015 transitions. [2021-08-12 18:48:58,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:48:58,147 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:48:58,147 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:48:58,147 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-08-12 18:48:58,147 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]=== [2021-08-12 18:48:58,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:48:58,147 INFO L82 PathProgramCache]: Analyzing trace with hash -659331171, now seen corresponding path program 21 times [2021-08-12 18:48:58,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:48:58,148 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804439022] [2021-08-12 18:48:58,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:48:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:48:58,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:48:58,264 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:48:58,264 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804439022] [2021-08-12 18:48:58,264 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804439022] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:48:58,264 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:48:58,264 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:48:58,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285345146] [2021-08-12 18:48:58,265 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:48:58,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:48:58,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:48:58,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:48:58,265 INFO L87 Difference]: Start difference. First operand 1513 states and 6015 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:59,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:48:59,022 INFO L93 Difference]: Finished difference Result 3330 states and 12324 transitions. [2021-08-12 18:48:59,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:48:59,023 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:48:59,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:48:59,033 INFO L225 Difference]: With dead ends: 3330 [2021-08-12 18:48:59,033 INFO L226 Difference]: Without dead ends: 3140 [2021-08-12 18:48:59,034 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 124.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:48:59,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3140 states. [2021-08-12 18:48:59,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 1576. [2021-08-12 18:48:59,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1575 states have (on average 3.9504761904761905) internal successors, (6222), 1575 states have internal predecessors, (6222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:48:59,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 6222 transitions. [2021-08-12 18:48:59,183 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 6222 transitions. Word has length 25 [2021-08-12 18:48:59,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:48:59,183 INFO L482 AbstractCegarLoop]: Abstraction has 1576 states and 6222 transitions. [2021-08-12 18:48:59,183 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) [2021-08-12 18:48:59,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 6222 transitions. [2021-08-12 18:48:59,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:48:59,186 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:48:59,186 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:48:59,186 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-08-12 18:48:59,186 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]=== [2021-08-12 18:48:59,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:48:59,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1215119459, now seen corresponding path program 22 times [2021-08-12 18:48:59,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:48:59,187 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065160048] [2021-08-12 18:48:59,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:48:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:48:59,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:48:59,307 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:48:59,307 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065160048] [2021-08-12 18:48:59,307 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065160048] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:48:59,307 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:48:59,307 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:48:59,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981867374] [2021-08-12 18:48:59,308 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:48:59,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:48:59,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:48:59,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:48:59,309 INFO L87 Difference]: Start difference. First operand 1576 states and 6222 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:00,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:00,069 INFO L93 Difference]: Finished difference Result 3363 states and 12407 transitions. [2021-08-12 18:49:00,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:00,069 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:49:00,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:00,080 INFO L225 Difference]: With dead ends: 3363 [2021-08-12 18:49:00,080 INFO L226 Difference]: Without dead ends: 3077 [2021-08-12 18:49:00,081 INFO L806 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 [2021-08-12 18:49:00,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3077 states. [2021-08-12 18:49:00,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3077 to 1513. [2021-08-12 18:49:00,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1513 states, 1512 states have (on average 3.9576719576719577) internal successors, (5984), 1512 states have internal predecessors, (5984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:00,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 5984 transitions. [2021-08-12 18:49:00,235 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 5984 transitions. Word has length 25 [2021-08-12 18:49:00,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:00,235 INFO L482 AbstractCegarLoop]: Abstraction has 1513 states and 5984 transitions. [2021-08-12 18:49:00,235 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:00,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 5984 transitions. [2021-08-12 18:49:00,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:00,238 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:00,238 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:00,238 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-08-12 18:49:00,238 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]=== [2021-08-12 18:49:00,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:00,238 INFO L82 PathProgramCache]: Analyzing trace with hash 323016443, now seen corresponding path program 23 times [2021-08-12 18:49:00,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:00,238 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617035003] [2021-08-12 18:49:00,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:00,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:00,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:00,352 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:00,353 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617035003] [2021-08-12 18:49:00,353 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617035003] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:00,353 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:00,353 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:00,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678507241] [2021-08-12 18:49:00,353 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:00,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:00,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:00,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:00,354 INFO L87 Difference]: Start difference. First operand 1513 states and 5984 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:01,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:01,136 INFO L93 Difference]: Finished difference Result 3309 states and 12232 transitions. [2021-08-12 18:49:01,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:01,136 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:49:01,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:01,147 INFO L225 Difference]: With dead ends: 3309 [2021-08-12 18:49:01,147 INFO L226 Difference]: Without dead ends: 3121 [2021-08-12 18:49:01,148 INFO L806 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 [2021-08-12 18:49:01,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3121 states. [2021-08-12 18:49:01,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3121 to 1559. [2021-08-12 18:49:01,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1559 states, 1558 states have (on average 3.941591784338896) internal successors, (6141), 1558 states have internal predecessors, (6141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:01,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 6141 transitions. [2021-08-12 18:49:01,270 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 6141 transitions. Word has length 25 [2021-08-12 18:49:01,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:01,271 INFO L482 AbstractCegarLoop]: Abstraction has 1559 states and 6141 transitions. [2021-08-12 18:49:01,271 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:01,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 6141 transitions. [2021-08-12 18:49:01,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:01,274 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:01,275 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:01,275 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-08-12 18:49:01,275 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]=== [2021-08-12 18:49:01,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:01,275 INFO L82 PathProgramCache]: Analyzing trace with hash -2034373155, now seen corresponding path program 24 times [2021-08-12 18:49:01,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:01,275 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338060429] [2021-08-12 18:49:01,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:01,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:01,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:01,399 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:01,399 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338060429] [2021-08-12 18:49:01,399 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338060429] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:01,399 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:01,399 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:01,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673254576] [2021-08-12 18:49:01,399 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:01,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:01,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:01,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:01,400 INFO L87 Difference]: Start difference. First operand 1559 states and 6141 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:02,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:02,197 INFO L93 Difference]: Finished difference Result 3344 states and 12321 transitions. [2021-08-12 18:49:02,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:02,198 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:49:02,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:02,207 INFO L225 Difference]: With dead ends: 3344 [2021-08-12 18:49:02,208 INFO L226 Difference]: Without dead ends: 3020 [2021-08-12 18:49:02,209 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:49:02,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3020 states. [2021-08-12 18:49:02,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3020 to 1458. [2021-08-12 18:49:02,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 1457 states have (on average 3.9979409746053536) internal successors, (5825), 1457 states have internal predecessors, (5825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:02,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 5825 transitions. [2021-08-12 18:49:02,342 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 5825 transitions. Word has length 25 [2021-08-12 18:49:02,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:02,342 INFO L482 AbstractCegarLoop]: Abstraction has 1458 states and 5825 transitions. [2021-08-12 18:49:02,342 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) [2021-08-12 18:49:02,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 5825 transitions. [2021-08-12 18:49:02,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:02,345 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:02,345 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:02,346 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-08-12 18:49:02,346 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]=== [2021-08-12 18:49:02,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:02,346 INFO L82 PathProgramCache]: Analyzing trace with hash -891763715, now seen corresponding path program 25 times [2021-08-12 18:49:02,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:02,346 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028538584] [2021-08-12 18:49:02,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:02,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:02,489 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:02,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028538584] [2021-08-12 18:49:02,489 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028538584] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:02,489 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:02,489 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:02,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585283625] [2021-08-12 18:49:02,489 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:02,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:02,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:02,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:02,490 INFO L87 Difference]: Start difference. First operand 1458 states and 5825 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:03,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:03,301 INFO L93 Difference]: Finished difference Result 3147 states and 11690 transitions. [2021-08-12 18:49:03,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:03,302 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 [2021-08-12 18:49:03,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:03,312 INFO L225 Difference]: With dead ends: 3147 [2021-08-12 18:49:03,312 INFO L226 Difference]: Without dead ends: 2987 [2021-08-12 18:49:03,313 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:49:03,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2987 states. [2021-08-12 18:49:03,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2987 to 1526. [2021-08-12 18:49:03,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1526 states, 1525 states have (on average 3.9954098360655736) internal successors, (6093), 1525 states have internal predecessors, (6093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:03,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 6093 transitions. [2021-08-12 18:49:03,438 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 6093 transitions. Word has length 25 [2021-08-12 18:49:03,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:03,438 INFO L482 AbstractCegarLoop]: Abstraction has 1526 states and 6093 transitions. [2021-08-12 18:49:03,438 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:03,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 6093 transitions. [2021-08-12 18:49:03,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:03,441 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:03,441 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:03,441 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-08-12 18:49:03,441 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]=== [2021-08-12 18:49:03,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:03,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1900061699, now seen corresponding path program 26 times [2021-08-12 18:49:03,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:03,441 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148357637] [2021-08-12 18:49:03,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:03,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:03,561 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:03,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148357637] [2021-08-12 18:49:03,561 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148357637] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:03,561 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:03,561 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:03,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108449758] [2021-08-12 18:49:03,561 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:03,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:03,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:03,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:03,562 INFO L87 Difference]: Start difference. First operand 1526 states and 6093 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:04,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:04,415 INFO L93 Difference]: Finished difference Result 3210 states and 11897 transitions. [2021-08-12 18:49:04,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:04,416 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:49:04,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:04,425 INFO L225 Difference]: With dead ends: 3210 [2021-08-12 18:49:04,425 INFO L226 Difference]: Without dead ends: 2955 [2021-08-12 18:49:04,426 INFO L806 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 [2021-08-12 18:49:04,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2021-08-12 18:49:04,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 1494. [2021-08-12 18:49:04,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1493 states have (on average 3.9953114534494305) internal successors, (5965), 1493 states have internal predecessors, (5965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:04,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 5965 transitions. [2021-08-12 18:49:04,548 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 5965 transitions. Word has length 25 [2021-08-12 18:49:04,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:04,548 INFO L482 AbstractCegarLoop]: Abstraction has 1494 states and 5965 transitions. [2021-08-12 18:49:04,549 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:04,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 5965 transitions. [2021-08-12 18:49:04,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:04,551 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:04,551 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:04,551 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-08-12 18:49:04,551 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]=== [2021-08-12 18:49:04,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:04,552 INFO L82 PathProgramCache]: Analyzing trace with hash -853149031, now seen corresponding path program 27 times [2021-08-12 18:49:04,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:04,552 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086694654] [2021-08-12 18:49:04,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:04,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:04,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:04,680 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:04,680 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086694654] [2021-08-12 18:49:04,680 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086694654] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:04,681 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:04,681 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:04,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45993761] [2021-08-12 18:49:04,681 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:04,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:04,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:04,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:04,681 INFO L87 Difference]: Start difference. First operand 1494 states and 5965 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:05,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:05,476 INFO L93 Difference]: Finished difference Result 3098 states and 11496 transitions. [2021-08-12 18:49:05,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:05,477 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:49:05,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:05,486 INFO L225 Difference]: With dead ends: 3098 [2021-08-12 18:49:05,487 INFO L226 Difference]: Without dead ends: 2938 [2021-08-12 18:49:05,487 INFO L806 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 [2021-08-12 18:49:05,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2021-08-12 18:49:05,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1510. [2021-08-12 18:49:05,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1510 states, 1509 states have (on average 3.984758117958913) internal successors, (6013), 1509 states have internal predecessors, (6013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:05,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1510 states to 1510 states and 6013 transitions. [2021-08-12 18:49:05,614 INFO L78 Accepts]: Start accepts. Automaton has 1510 states and 6013 transitions. Word has length 25 [2021-08-12 18:49:05,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:05,615 INFO L482 AbstractCegarLoop]: Abstraction has 1510 states and 6013 transitions. [2021-08-12 18:49:05,615 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) [2021-08-12 18:49:05,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1510 states and 6013 transitions. [2021-08-12 18:49:05,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:05,619 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:05,619 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:05,619 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-08-12 18:49:05,619 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]=== [2021-08-12 18:49:05,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:05,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1851883515, now seen corresponding path program 28 times [2021-08-12 18:49:05,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:05,620 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554068639] [2021-08-12 18:49:05,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:05,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:05,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:05,735 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:05,735 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554068639] [2021-08-12 18:49:05,735 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554068639] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:05,735 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:05,735 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:05,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560774989] [2021-08-12 18:49:05,735 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:05,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:05,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:05,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:05,735 INFO L87 Difference]: Start difference. First operand 1510 states and 6013 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:06,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:06,562 INFO L93 Difference]: Finished difference Result 3128 states and 11589 transitions. [2021-08-12 18:49:06,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:06,563 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:49:06,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:06,572 INFO L225 Difference]: With dead ends: 3128 [2021-08-12 18:49:06,572 INFO L226 Difference]: Without dead ends: 2922 [2021-08-12 18:49:06,573 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 128.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:49:06,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2021-08-12 18:49:06,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 1494. [2021-08-12 18:49:06,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1493 states have (on average 3.989953114534494) internal successors, (5957), 1493 states have internal predecessors, (5957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:06,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 5957 transitions. [2021-08-12 18:49:06,700 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 5957 transitions. Word has length 25 [2021-08-12 18:49:06,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:06,700 INFO L482 AbstractCegarLoop]: Abstraction has 1494 states and 5957 transitions. [2021-08-12 18:49:06,701 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) [2021-08-12 18:49:06,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 5957 transitions. [2021-08-12 18:49:06,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:06,703 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:06,703 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:06,703 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-08-12 18:49:06,704 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]=== [2021-08-12 18:49:06,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:06,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1213720029, now seen corresponding path program 29 times [2021-08-12 18:49:06,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:06,704 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789344995] [2021-08-12 18:49:06,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:06,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:06,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:06,824 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:06,824 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789344995] [2021-08-12 18:49:06,824 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789344995] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:06,824 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:06,824 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:06,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419183683] [2021-08-12 18:49:06,825 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:06,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:06,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:06,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:06,826 INFO L87 Difference]: Start difference. First operand 1494 states and 5957 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:07,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:07,711 INFO L93 Difference]: Finished difference Result 3238 states and 11994 transitions. [2021-08-12 18:49:07,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:07,711 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:49:07,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:07,721 INFO L225 Difference]: With dead ends: 3238 [2021-08-12 18:49:07,722 INFO L226 Difference]: Without dead ends: 3048 [2021-08-12 18:49:07,723 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 121.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:49:07,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3048 states. [2021-08-12 18:49:07,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3048 to 1557. [2021-08-12 18:49:07,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1557 states, 1556 states have (on average 3.961439588688946) internal successors, (6164), 1556 states have internal predecessors, (6164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:07,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1557 states to 1557 states and 6164 transitions. [2021-08-12 18:49:07,861 INFO L78 Accepts]: Start accepts. Automaton has 1557 states and 6164 transitions. Word has length 25 [2021-08-12 18:49:07,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:07,861 INFO L482 AbstractCegarLoop]: Abstraction has 1557 states and 6164 transitions. [2021-08-12 18:49:07,861 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:07,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1557 states and 6164 transitions. [2021-08-12 18:49:07,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:07,864 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:07,864 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:07,864 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-08-12 18:49:07,865 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]=== [2021-08-12 18:49:07,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:07,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1511772987, now seen corresponding path program 30 times [2021-08-12 18:49:07,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:07,865 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473940486] [2021-08-12 18:49:07,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:07,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:07,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:07,991 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:07,991 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473940486] [2021-08-12 18:49:07,991 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473940486] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:07,991 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:07,991 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:07,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692026972] [2021-08-12 18:49:07,991 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:07,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:07,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:07,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:07,992 INFO L87 Difference]: Start difference. First operand 1557 states and 6164 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:08,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:08,906 INFO L93 Difference]: Finished difference Result 3271 states and 12077 transitions. [2021-08-12 18:49:08,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:08,907 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:49:08,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:08,917 INFO L225 Difference]: With dead ends: 3271 [2021-08-12 18:49:08,918 INFO L226 Difference]: Without dead ends: 2961 [2021-08-12 18:49:08,919 INFO L806 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 [2021-08-12 18:49:08,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2021-08-12 18:49:09,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1470. [2021-08-12 18:49:09,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 3.995234853641933) internal successors, (5869), 1469 states have internal predecessors, (5869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:09,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5869 transitions. [2021-08-12 18:49:09,057 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5869 transitions. Word has length 25 [2021-08-12 18:49:09,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:09,057 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 5869 transitions. [2021-08-12 18:49:09,057 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:09,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5869 transitions. [2021-08-12 18:49:09,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:09,060 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:09,060 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:09,061 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-08-12 18:49:09,061 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]=== [2021-08-12 18:49:09,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:09,061 INFO L82 PathProgramCache]: Analyzing trace with hash 407415963, now seen corresponding path program 31 times [2021-08-12 18:49:09,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:09,061 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161204608] [2021-08-12 18:49:09,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:09,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:09,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:09,184 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:09,184 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161204608] [2021-08-12 18:49:09,185 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161204608] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:09,185 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:09,185 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:09,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473924476] [2021-08-12 18:49:09,186 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:09,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:09,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:09,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:09,187 INFO L87 Difference]: Start difference. First operand 1470 states and 5869 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:10,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:10,056 INFO L93 Difference]: Finished difference Result 3114 states and 11575 transitions. [2021-08-12 18:49:10,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:10,057 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:49:10,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:10,067 INFO L225 Difference]: With dead ends: 3114 [2021-08-12 18:49:10,067 INFO L226 Difference]: Without dead ends: 2954 [2021-08-12 18:49:10,068 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 116.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:49:10,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2021-08-12 18:49:10,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 1518. [2021-08-12 18:49:10,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1518 states, 1517 states have (on average 3.990112063282795) internal successors, (6053), 1517 states have internal predecessors, (6053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:10,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 6053 transitions. [2021-08-12 18:49:10,206 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 6053 transitions. Word has length 25 [2021-08-12 18:49:10,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:10,207 INFO L482 AbstractCegarLoop]: Abstraction has 1518 states and 6053 transitions. [2021-08-12 18:49:10,207 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) [2021-08-12 18:49:10,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 6053 transitions. [2021-08-12 18:49:10,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:10,210 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:10,210 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:10,210 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-08-12 18:49:10,210 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]=== [2021-08-12 18:49:10,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:10,210 INFO L82 PathProgramCache]: Analyzing trace with hash -600882021, now seen corresponding path program 32 times [2021-08-12 18:49:10,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:10,211 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213365894] [2021-08-12 18:49:10,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:10,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:10,328 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:10,328 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213365894] [2021-08-12 18:49:10,328 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213365894] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:10,328 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:10,328 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:10,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803164102] [2021-08-12 18:49:10,329 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:10,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:10,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:10,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:10,329 INFO L87 Difference]: Start difference. First operand 1518 states and 6053 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:11,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:11,247 INFO L93 Difference]: Finished difference Result 3177 states and 11782 transitions. [2021-08-12 18:49:11,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:11,247 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:49:11,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:11,259 INFO L225 Difference]: With dead ends: 3177 [2021-08-12 18:49:11,259 INFO L226 Difference]: Without dead ends: 2922 [2021-08-12 18:49:11,260 INFO L806 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 [2021-08-12 18:49:11,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2021-08-12 18:49:11,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 1486. [2021-08-12 18:49:11,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 3.98989898989899) internal successors, (5925), 1485 states have internal predecessors, (5925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:11,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5925 transitions. [2021-08-12 18:49:11,409 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5925 transitions. Word has length 25 [2021-08-12 18:49:11,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:11,410 INFO L482 AbstractCegarLoop]: Abstraction has 1486 states and 5925 transitions. [2021-08-12 18:49:11,410 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:11,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5925 transitions. [2021-08-12 18:49:11,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:11,413 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:11,414 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:11,414 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-08-12 18:49:11,414 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]=== [2021-08-12 18:49:11,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:11,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1853761475, now seen corresponding path program 33 times [2021-08-12 18:49:11,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:11,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653491712] [2021-08-12 18:49:11,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:11,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:11,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:11,512 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:11,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653491712] [2021-08-12 18:49:11,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653491712] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:11,513 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:11,513 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:11,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137120434] [2021-08-12 18:49:11,513 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:11,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:11,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:11,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:11,514 INFO L87 Difference]: Start difference. First operand 1486 states and 5925 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:12,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:12,385 INFO L93 Difference]: Finished difference Result 3059 states and 11364 transitions. [2021-08-12 18:49:12,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:12,386 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 [2021-08-12 18:49:12,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:12,397 INFO L225 Difference]: With dead ends: 3059 [2021-08-12 18:49:12,397 INFO L226 Difference]: Without dead ends: 2899 [2021-08-12 18:49:12,398 INFO L806 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 [2021-08-12 18:49:12,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2021-08-12 18:49:12,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1502. [2021-08-12 18:49:12,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 1501 states have (on average 3.979347101932045) internal successors, (5973), 1501 states have internal predecessors, (5973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:12,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 5973 transitions. [2021-08-12 18:49:12,556 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 5973 transitions. Word has length 25 [2021-08-12 18:49:12,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:12,557 INFO L482 AbstractCegarLoop]: Abstraction has 1502 states and 5973 transitions. [2021-08-12 18:49:12,557 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) [2021-08-12 18:49:12,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 5973 transitions. [2021-08-12 18:49:12,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:12,559 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:12,559 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:12,559 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-08-12 18:49:12,559 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]=== [2021-08-12 18:49:12,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:12,560 INFO L82 PathProgramCache]: Analyzing trace with hash -173264835, now seen corresponding path program 34 times [2021-08-12 18:49:12,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:12,560 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403956249] [2021-08-12 18:49:12,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:12,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:12,669 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:12,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403956249] [2021-08-12 18:49:12,669 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403956249] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:12,669 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:12,669 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:12,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268054732] [2021-08-12 18:49:12,670 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:12,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:12,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:12,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:12,671 INFO L87 Difference]: Start difference. First operand 1502 states and 5973 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:13,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:13,576 INFO L93 Difference]: Finished difference Result 3083 states and 11440 transitions. [2021-08-12 18:49:13,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:13,576 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:49:13,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:13,586 INFO L225 Difference]: With dead ends: 3083 [2021-08-12 18:49:13,586 INFO L226 Difference]: Without dead ends: 2883 [2021-08-12 18:49:13,587 INFO L806 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 [2021-08-12 18:49:13,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2883 states. [2021-08-12 18:49:13,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2883 to 1486. [2021-08-12 18:49:13,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 3.9845117845117843) internal successors, (5917), 1485 states have internal predecessors, (5917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:13,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5917 transitions. [2021-08-12 18:49:13,727 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5917 transitions. Word has length 25 [2021-08-12 18:49:13,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:13,727 INFO L482 AbstractCegarLoop]: Abstraction has 1486 states and 5917 transitions. [2021-08-12 18:49:13,727 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) [2021-08-12 18:49:13,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5917 transitions. [2021-08-12 18:49:13,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:13,730 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:13,730 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:13,730 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-08-12 18:49:13,730 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]=== [2021-08-12 18:49:13,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:13,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1514981437, now seen corresponding path program 35 times [2021-08-12 18:49:13,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:13,730 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258409727] [2021-08-12 18:49:13,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:13,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:13,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:13,837 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:13,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258409727] [2021-08-12 18:49:13,837 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258409727] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:13,837 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:13,837 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:13,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665396914] [2021-08-12 18:49:13,837 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:13,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:13,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:13,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:13,838 INFO L87 Difference]: Start difference. First operand 1486 states and 5917 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:14,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:14,773 INFO L93 Difference]: Finished difference Result 3174 states and 11787 transitions. [2021-08-12 18:49:14,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:14,773 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:49:14,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:14,784 INFO L225 Difference]: With dead ends: 3174 [2021-08-12 18:49:14,784 INFO L226 Difference]: Without dead ends: 2990 [2021-08-12 18:49:14,785 INFO L806 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 [2021-08-12 18:49:14,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2021-08-12 18:49:14,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 1530. [2021-08-12 18:49:14,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1530 states, 1529 states have (on average 3.9692609548724658) internal successors, (6069), 1529 states have internal predecessors, (6069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:14,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 6069 transitions. [2021-08-12 18:49:14,930 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 6069 transitions. Word has length 25 [2021-08-12 18:49:14,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:14,930 INFO L482 AbstractCegarLoop]: Abstraction has 1530 states and 6069 transitions. [2021-08-12 18:49:14,930 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) [2021-08-12 18:49:14,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 6069 transitions. [2021-08-12 18:49:14,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:14,933 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:14,933 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:14,933 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-08-12 18:49:14,933 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]=== [2021-08-12 18:49:14,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:14,933 INFO L82 PathProgramCache]: Analyzing trace with hash 510649499, now seen corresponding path program 36 times [2021-08-12 18:49:14,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:14,933 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638909532] [2021-08-12 18:49:14,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:15,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:15,049 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:15,049 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638909532] [2021-08-12 18:49:15,049 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638909532] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:15,049 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:15,049 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:15,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875655875] [2021-08-12 18:49:15,050 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:15,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:15,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:15,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:15,050 INFO L87 Difference]: Start difference. First operand 1530 states and 6069 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:16,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:16,048 INFO L93 Difference]: Finished difference Result 3213 states and 11890 transitions. [2021-08-12 18:49:16,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:16,048 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 [2021-08-12 18:49:16,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:16,059 INFO L225 Difference]: With dead ends: 3213 [2021-08-12 18:49:16,059 INFO L226 Difference]: Without dead ends: 2930 [2021-08-12 18:49:16,060 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:49:16,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2021-08-12 18:49:16,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1470. [2021-08-12 18:49:16,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 3.989788972089857) internal successors, (5861), 1469 states have internal predecessors, (5861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:16,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5861 transitions. [2021-08-12 18:49:16,212 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5861 transitions. Word has length 25 [2021-08-12 18:49:16,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:16,212 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 5861 transitions. [2021-08-12 18:49:16,212 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:16,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5861 transitions. [2021-08-12 18:49:16,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:16,214 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:16,214 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:16,214 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-08-12 18:49:16,214 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]=== [2021-08-12 18:49:16,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:16,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1102019447, now seen corresponding path program 37 times [2021-08-12 18:49:16,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:16,215 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642636998] [2021-08-12 18:49:16,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:16,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:16,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:16,331 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:16,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642636998] [2021-08-12 18:49:16,331 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642636998] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:16,331 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:16,331 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:16,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636526485] [2021-08-12 18:49:16,331 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:16,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:16,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:16,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:16,332 INFO L87 Difference]: Start difference. First operand 1470 states and 5861 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:17,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:17,271 INFO L93 Difference]: Finished difference Result 2992 states and 11111 transitions. [2021-08-12 18:49:17,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:17,271 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:49:17,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:17,282 INFO L225 Difference]: With dead ends: 2992 [2021-08-12 18:49:17,282 INFO L226 Difference]: Without dead ends: 2832 [2021-08-12 18:49:17,283 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:49:17,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2832 states. [2021-08-12 18:49:17,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2832 to 1494. [2021-08-12 18:49:17,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1493 states have (on average 3.9819156061620897) internal successors, (5945), 1493 states have internal predecessors, (5945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:17,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 5945 transitions. [2021-08-12 18:49:17,431 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 5945 transitions. Word has length 25 [2021-08-12 18:49:17,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:17,431 INFO L482 AbstractCegarLoop]: Abstraction has 1494 states and 5945 transitions. [2021-08-12 18:49:17,431 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) [2021-08-12 18:49:17,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 5945 transitions. [2021-08-12 18:49:17,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:17,434 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:17,434 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:17,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-08-12 18:49:17,435 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]=== [2021-08-12 18:49:17,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:17,435 INFO L82 PathProgramCache]: Analyzing trace with hash -487915303, now seen corresponding path program 38 times [2021-08-12 18:49:17,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:17,435 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469681917] [2021-08-12 18:49:17,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:17,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:17,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:17,540 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:17,540 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469681917] [2021-08-12 18:49:17,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469681917] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:17,541 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:17,541 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:17,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261837720] [2021-08-12 18:49:17,541 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:17,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:17,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:17,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:17,542 INFO L87 Difference]: Start difference. First operand 1494 states and 5945 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:18,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:18,592 INFO L93 Difference]: Finished difference Result 3022 states and 11204 transitions. [2021-08-12 18:49:18,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:18,593 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:49:18,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:18,605 INFO L225 Difference]: With dead ends: 3022 [2021-08-12 18:49:18,605 INFO L226 Difference]: Without dead ends: 2816 [2021-08-12 18:49:18,606 INFO L806 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 [2021-08-12 18:49:18,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2816 states. [2021-08-12 18:49:18,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2816 to 1478. [2021-08-12 18:49:18,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1477 states have (on average 3.987136086662153) internal successors, (5889), 1477 states have internal predecessors, (5889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:18,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 5889 transitions. [2021-08-12 18:49:18,760 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 5889 transitions. Word has length 25 [2021-08-12 18:49:18,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:18,760 INFO L482 AbstractCegarLoop]: Abstraction has 1478 states and 5889 transitions. [2021-08-12 18:49:18,760 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:18,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 5889 transitions. [2021-08-12 18:49:18,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:18,764 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:18,764 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:18,764 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-08-12 18:49:18,764 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]=== [2021-08-12 18:49:18,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:18,765 INFO L82 PathProgramCache]: Analyzing trace with hash 895211481, now seen corresponding path program 39 times [2021-08-12 18:49:18,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:18,765 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317089055] [2021-08-12 18:49:18,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:18,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:18,860 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:18,860 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317089055] [2021-08-12 18:49:18,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317089055] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:18,860 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:18,860 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:18,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905300306] [2021-08-12 18:49:18,860 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:18,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:18,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:18,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:18,861 INFO L87 Difference]: Start difference. First operand 1478 states and 5889 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:19,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:19,852 INFO L93 Difference]: Finished difference Result 2986 states and 11086 transitions. [2021-08-12 18:49:19,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:19,853 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:49:19,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:19,864 INFO L225 Difference]: With dead ends: 2986 [2021-08-12 18:49:19,864 INFO L226 Difference]: Without dead ends: 2826 [2021-08-12 18:49:19,865 INFO L806 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 [2021-08-12 18:49:19,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2826 states. [2021-08-12 18:49:20,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2826 to 1494. [2021-08-12 18:49:20,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1493 states have (on average 3.9765572672471534) internal successors, (5937), 1493 states have internal predecessors, (5937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:20,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 5937 transitions. [2021-08-12 18:49:20,023 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 5937 transitions. Word has length 25 [2021-08-12 18:49:20,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:20,024 INFO L482 AbstractCegarLoop]: Abstraction has 1494 states and 5937 transitions. [2021-08-12 18:49:20,024 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) [2021-08-12 18:49:20,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 5937 transitions. [2021-08-12 18:49:20,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:20,026 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:20,026 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:20,026 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-08-12 18:49:20,026 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]=== [2021-08-12 18:49:20,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:20,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1719259175, now seen corresponding path program 40 times [2021-08-12 18:49:20,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:20,027 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893214955] [2021-08-12 18:49:20,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:20,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:20,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:20,138 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:20,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893214955] [2021-08-12 18:49:20,138 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893214955] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:20,138 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:20,138 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:20,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663499556] [2021-08-12 18:49:20,138 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:20,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:20,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:20,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:20,138 INFO L87 Difference]: Start difference. First operand 1494 states and 5937 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:21,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:21,186 INFO L93 Difference]: Finished difference Result 3010 states and 11162 transitions. [2021-08-12 18:49:21,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:21,187 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 [2021-08-12 18:49:21,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:21,197 INFO L225 Difference]: With dead ends: 3010 [2021-08-12 18:49:21,198 INFO L226 Difference]: Without dead ends: 2810 [2021-08-12 18:49:21,199 INFO L806 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 [2021-08-12 18:49:21,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2021-08-12 18:49:21,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 1478. [2021-08-12 18:49:21,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1477 states have (on average 3.981719702098849) internal successors, (5881), 1477 states have internal predecessors, (5881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:21,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 5881 transitions. [2021-08-12 18:49:21,362 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 5881 transitions. Word has length 25 [2021-08-12 18:49:21,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:21,363 INFO L482 AbstractCegarLoop]: Abstraction has 1478 states and 5881 transitions. [2021-08-12 18:49:21,363 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) [2021-08-12 18:49:21,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 5881 transitions. [2021-08-12 18:49:21,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:21,365 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:21,365 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:21,365 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-08-12 18:49:21,366 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]=== [2021-08-12 18:49:21,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:21,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1982593861, now seen corresponding path program 41 times [2021-08-12 18:49:21,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:21,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471072526] [2021-08-12 18:49:21,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:21,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:21,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:21,479 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:21,479 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471072526] [2021-08-12 18:49:21,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471072526] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:21,479 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:21,479 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:21,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697831015] [2021-08-12 18:49:21,479 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:21,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:21,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:21,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:21,480 INFO L87 Difference]: Start difference. First operand 1478 states and 5881 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:22,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:22,586 INFO L93 Difference]: Finished difference Result 3058 states and 11348 transitions. [2021-08-12 18:49:22,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:22,586 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 [2021-08-12 18:49:22,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:22,598 INFO L225 Difference]: With dead ends: 3058 [2021-08-12 18:49:22,599 INFO L226 Difference]: Without dead ends: 2868 [2021-08-12 18:49:22,600 INFO L806 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 [2021-08-12 18:49:22,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2868 states. [2021-08-12 18:49:22,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2868 to 1506. [2021-08-12 18:49:22,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 3.966112956810631) internal successors, (5969), 1505 states have internal predecessors, (5969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:22,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 5969 transitions. [2021-08-12 18:49:22,779 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 5969 transitions. Word has length 25 [2021-08-12 18:49:22,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:22,779 INFO L482 AbstractCegarLoop]: Abstraction has 1506 states and 5969 transitions. [2021-08-12 18:49:22,780 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:22,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 5969 transitions. [2021-08-12 18:49:22,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:22,782 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:22,782 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:22,782 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-08-12 18:49:22,782 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]=== [2021-08-12 18:49:22,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:22,783 INFO L82 PathProgramCache]: Analyzing trace with hash 920228889, now seen corresponding path program 42 times [2021-08-12 18:49:22,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:22,783 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390513924] [2021-08-12 18:49:22,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:22,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:22,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:22,881 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:22,881 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390513924] [2021-08-12 18:49:22,881 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390513924] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:22,881 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:22,881 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:22,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420989653] [2021-08-12 18:49:22,881 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:22,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:22,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:22,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:22,882 INFO L87 Difference]: Start difference. First operand 1506 states and 5969 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:23,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:23,988 INFO L93 Difference]: Finished difference Result 3052 states and 11303 transitions. [2021-08-12 18:49:23,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:23,988 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 [2021-08-12 18:49:23,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:24,000 INFO L225 Difference]: With dead ends: 3052 [2021-08-12 18:49:24,000 INFO L226 Difference]: Without dead ends: 2832 [2021-08-12 18:49:24,001 INFO L806 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 [2021-08-12 18:49:24,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2832 states. [2021-08-12 18:49:24,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2832 to 1470. [2021-08-12 18:49:24,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 3.987066031313819) internal successors, (5857), 1469 states have internal predecessors, (5857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:24,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5857 transitions. [2021-08-12 18:49:24,160 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5857 transitions. Word has length 25 [2021-08-12 18:49:24,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:24,160 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 5857 transitions. [2021-08-12 18:49:24,160 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) [2021-08-12 18:49:24,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5857 transitions. [2021-08-12 18:49:24,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:24,163 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:24,163 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:24,163 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-08-12 18:49:24,163 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]=== [2021-08-12 18:49:24,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:24,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1077380579, now seen corresponding path program 43 times [2021-08-12 18:49:24,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:24,163 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980089063] [2021-08-12 18:49:24,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:24,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:24,261 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:24,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980089063] [2021-08-12 18:49:24,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980089063] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:24,261 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:24,261 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:24,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691250028] [2021-08-12 18:49:24,265 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:24,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:24,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:24,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:24,266 INFO L87 Difference]: Start difference. First operand 1470 states and 5857 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:25,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:25,413 INFO L93 Difference]: Finished difference Result 3218 states and 11966 transitions. [2021-08-12 18:49:25,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:25,414 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 [2021-08-12 18:49:25,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:25,425 INFO L225 Difference]: With dead ends: 3218 [2021-08-12 18:49:25,425 INFO L226 Difference]: Without dead ends: 3028 [2021-08-12 18:49:25,426 INFO L806 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 [2021-08-12 18:49:25,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3028 states. [2021-08-12 18:49:25,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3028 to 1528. [2021-08-12 18:49:25,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1528 states, 1527 states have (on average 3.97773411918795) internal successors, (6074), 1527 states have internal predecessors, (6074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:25,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 6074 transitions. [2021-08-12 18:49:25,594 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 6074 transitions. Word has length 25 [2021-08-12 18:49:25,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:25,594 INFO L482 AbstractCegarLoop]: Abstraction has 1528 states and 6074 transitions. [2021-08-12 18:49:25,595 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:25,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 6074 transitions. [2021-08-12 18:49:25,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:25,597 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:25,597 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:25,597 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-08-12 18:49:25,597 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]=== [2021-08-12 18:49:25,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:25,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1825442171, now seen corresponding path program 44 times [2021-08-12 18:49:25,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:25,598 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790812728] [2021-08-12 18:49:25,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:25,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:25,696 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:25,696 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790812728] [2021-08-12 18:49:25,696 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790812728] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:25,696 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:25,696 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:25,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072563386] [2021-08-12 18:49:25,696 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:25,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:25,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:25,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:25,697 INFO L87 Difference]: Start difference. First operand 1528 states and 6074 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:26,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:26,915 INFO L93 Difference]: Finished difference Result 3212 states and 11921 transitions. [2021-08-12 18:49:26,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:26,915 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 [2021-08-12 18:49:26,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:26,926 INFO L225 Difference]: With dead ends: 3212 [2021-08-12 18:49:26,927 INFO L226 Difference]: Without dead ends: 3000 [2021-08-12 18:49:26,928 INFO L806 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 [2021-08-12 18:49:26,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2021-08-12 18:49:27,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 1500. [2021-08-12 18:49:27,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 1499 states have (on average 3.983989326217478) internal successors, (5972), 1499 states have internal predecessors, (5972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:27,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 5972 transitions. [2021-08-12 18:49:27,099 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 5972 transitions. Word has length 25 [2021-08-12 18:49:27,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:27,099 INFO L482 AbstractCegarLoop]: Abstraction has 1500 states and 5972 transitions. [2021-08-12 18:49:27,099 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:27,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 5972 transitions. [2021-08-12 18:49:27,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:27,102 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:27,102 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:27,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-08-12 18:49:27,102 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]=== [2021-08-12 18:49:27,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:27,102 INFO L82 PathProgramCache]: Analyzing trace with hash 127268603, now seen corresponding path program 45 times [2021-08-12 18:49:27,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:27,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059254214] [2021-08-12 18:49:27,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:27,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:27,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:27,189 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:27,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059254214] [2021-08-12 18:49:27,189 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059254214] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:27,189 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:27,189 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:27,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680716221] [2021-08-12 18:49:27,189 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:27,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:27,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:27,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:27,190 INFO L87 Difference]: Start difference. First operand 1500 states and 5972 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:28,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:28,446 INFO L93 Difference]: Finished difference Result 3292 states and 12205 transitions. [2021-08-12 18:49:28,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:28,446 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 [2021-08-12 18:49:28,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:28,458 INFO L225 Difference]: With dead ends: 3292 [2021-08-12 18:49:28,458 INFO L226 Difference]: Without dead ends: 3102 [2021-08-12 18:49:28,459 INFO L806 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 [2021-08-12 18:49:28,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3102 states. [2021-08-12 18:49:28,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3102 to 1563. [2021-08-12 18:49:28,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1562 states have (on average 3.9558258642765685) internal successors, (6179), 1562 states have internal predecessors, (6179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:28,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 6179 transitions. [2021-08-12 18:49:28,636 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 6179 transitions. Word has length 25 [2021-08-12 18:49:28,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:28,636 INFO L482 AbstractCegarLoop]: Abstraction has 1563 states and 6179 transitions. [2021-08-12 18:49:28,637 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) [2021-08-12 18:49:28,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 6179 transitions. [2021-08-12 18:49:28,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:28,639 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:28,639 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:28,639 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-08-12 18:49:28,640 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]=== [2021-08-12 18:49:28,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:28,640 INFO L82 PathProgramCache]: Analyzing trace with hash 859350907, now seen corresponding path program 46 times [2021-08-12 18:49:28,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:28,640 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588956058] [2021-08-12 18:49:28,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:28,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:28,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:28,746 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:28,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588956058] [2021-08-12 18:49:28,746 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588956058] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:28,746 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:28,746 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:28,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685581866] [2021-08-12 18:49:28,747 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:28,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:28,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:28,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:28,747 INFO L87 Difference]: Start difference. First operand 1563 states and 6179 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:30,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:30,112 INFO L93 Difference]: Finished difference Result 3325 states and 12288 transitions. [2021-08-12 18:49:30,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:30,113 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 [2021-08-12 18:49:30,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:30,125 INFO L225 Difference]: With dead ends: 3325 [2021-08-12 18:49:30,125 INFO L226 Difference]: Without dead ends: 3039 [2021-08-12 18:49:30,127 INFO L806 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 [2021-08-12 18:49:30,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3039 states. [2021-08-12 18:49:30,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3039 to 1500. [2021-08-12 18:49:30,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 1499 states have (on average 3.963975983989326) internal successors, (5942), 1499 states have internal predecessors, (5942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:30,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 5942 transitions. [2021-08-12 18:49:30,298 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 5942 transitions. Word has length 25 [2021-08-12 18:49:30,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:30,299 INFO L482 AbstractCegarLoop]: Abstraction has 1500 states and 5942 transitions. [2021-08-12 18:49:30,299 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:30,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 5942 transitions. [2021-08-12 18:49:30,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:30,301 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:30,302 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:30,302 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-08-12 18:49:30,302 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]=== [2021-08-12 18:49:30,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:30,302 INFO L82 PathProgramCache]: Analyzing trace with hash 491525977, now seen corresponding path program 47 times [2021-08-12 18:49:30,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:30,302 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979913512] [2021-08-12 18:49:30,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:30,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:30,401 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:30,401 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979913512] [2021-08-12 18:49:30,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979913512] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:30,401 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:30,401 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:30,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419791894] [2021-08-12 18:49:30,402 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:30,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:30,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:30,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:30,402 INFO L87 Difference]: Start difference. First operand 1500 states and 5942 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:31,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:31,660 INFO L93 Difference]: Finished difference Result 3261 states and 12083 transitions. [2021-08-12 18:49:31,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:31,661 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 [2021-08-12 18:49:31,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:31,673 INFO L225 Difference]: With dead ends: 3261 [2021-08-12 18:49:31,673 INFO L226 Difference]: Without dead ends: 3077 [2021-08-12 18:49:31,674 INFO L806 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 [2021-08-12 18:49:31,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3077 states. [2021-08-12 18:49:31,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3077 to 1544. [2021-08-12 18:49:31,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1544 states, 1543 states have (on average 3.949449125081011) internal successors, (6094), 1543 states have internal predecessors, (6094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:31,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 6094 transitions. [2021-08-12 18:49:31,866 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 6094 transitions. Word has length 25 [2021-08-12 18:49:31,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:31,867 INFO L482 AbstractCegarLoop]: Abstraction has 1544 states and 6094 transitions. [2021-08-12 18:49:31,867 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:31,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 6094 transitions. [2021-08-12 18:49:31,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:31,869 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:31,869 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:31,869 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-08-12 18:49:31,870 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]=== [2021-08-12 18:49:31,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:31,870 INFO L82 PathProgramCache]: Analyzing trace with hash -577993029, now seen corresponding path program 48 times [2021-08-12 18:49:31,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:31,870 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469305781] [2021-08-12 18:49:31,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:31,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:31,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:31,974 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:31,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469305781] [2021-08-12 18:49:31,974 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469305781] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:31,974 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:31,974 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:31,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791341289] [2021-08-12 18:49:31,974 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:31,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:31,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:31,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:31,975 INFO L87 Difference]: Start difference. First operand 1544 states and 6094 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:33,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:33,282 INFO L93 Difference]: Finished difference Result 3300 states and 12186 transitions. [2021-08-12 18:49:33,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:33,283 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 [2021-08-12 18:49:33,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:33,295 INFO L225 Difference]: With dead ends: 3300 [2021-08-12 18:49:33,295 INFO L226 Difference]: Without dead ends: 2991 [2021-08-12 18:49:33,296 INFO L806 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 [2021-08-12 18:49:33,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2991 states. [2021-08-12 18:49:33,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2991 to 1458. [2021-08-12 18:49:33,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 1457 states have (on average 3.9938229238160603) internal successors, (5819), 1457 states have internal predecessors, (5819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:33,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 5819 transitions. [2021-08-12 18:49:33,471 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 5819 transitions. Word has length 25 [2021-08-12 18:49:33,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:33,471 INFO L482 AbstractCegarLoop]: Abstraction has 1458 states and 5819 transitions. [2021-08-12 18:49:33,471 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) [2021-08-12 18:49:33,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 5819 transitions. [2021-08-12 18:49:33,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:33,473 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:33,474 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:33,474 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-08-12 18:49:33,474 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]=== [2021-08-12 18:49:33,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:33,474 INFO L82 PathProgramCache]: Analyzing trace with hash 483139259, now seen corresponding path program 49 times [2021-08-12 18:49:33,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:33,474 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49483393] [2021-08-12 18:49:33,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:33,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:33,588 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:33,588 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49483393] [2021-08-12 18:49:33,588 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49483393] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:33,588 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:33,588 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:33,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105485204] [2021-08-12 18:49:33,589 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:33,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:33,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:33,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:33,589 INFO L87 Difference]: Start difference. First operand 1458 states and 5819 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:34,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:34,953 INFO L93 Difference]: Finished difference Result 3081 states and 11472 transitions. [2021-08-12 18:49:34,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:34,953 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 [2021-08-12 18:49:34,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:34,964 INFO L225 Difference]: With dead ends: 3081 [2021-08-12 18:49:34,964 INFO L226 Difference]: Without dead ends: 2921 [2021-08-12 18:49:34,965 INFO L806 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 [2021-08-12 18:49:34,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2021-08-12 18:49:35,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1514. [2021-08-12 18:49:35,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 1513 states have (on average 3.994051553205552) internal successors, (6043), 1513 states have internal predecessors, (6043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:35,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 6043 transitions. [2021-08-12 18:49:35,146 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 6043 transitions. Word has length 25 [2021-08-12 18:49:35,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:35,146 INFO L482 AbstractCegarLoop]: Abstraction has 1514 states and 6043 transitions. [2021-08-12 18:49:35,146 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:35,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 6043 transitions. [2021-08-12 18:49:35,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:35,149 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:35,149 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:35,149 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-08-12 18:49:35,149 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]=== [2021-08-12 18:49:35,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:35,149 INFO L82 PathProgramCache]: Analyzing trace with hash -525158725, now seen corresponding path program 50 times [2021-08-12 18:49:35,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:35,150 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551952741] [2021-08-12 18:49:35,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:35,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:35,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:35,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551952741] [2021-08-12 18:49:35,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551952741] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:35,253 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:35,253 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:35,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614425342] [2021-08-12 18:49:35,254 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:35,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:35,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:35,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:35,254 INFO L87 Difference]: Start difference. First operand 1514 states and 6043 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:36,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:36,619 INFO L93 Difference]: Finished difference Result 3144 states and 11679 transitions. [2021-08-12 18:49:36,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:36,619 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 [2021-08-12 18:49:36,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:36,630 INFO L225 Difference]: With dead ends: 3144 [2021-08-12 18:49:36,630 INFO L226 Difference]: Without dead ends: 2889 [2021-08-12 18:49:36,631 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:49:36,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2889 states. [2021-08-12 18:49:36,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2889 to 1482. [2021-08-12 18:49:36,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1481 states have (on average 3.9939230249831197) internal successors, (5915), 1481 states have internal predecessors, (5915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:36,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 5915 transitions. [2021-08-12 18:49:36,818 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 5915 transitions. Word has length 25 [2021-08-12 18:49:36,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:36,818 INFO L482 AbstractCegarLoop]: Abstraction has 1482 states and 5915 transitions. [2021-08-12 18:49:36,818 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) [2021-08-12 18:49:36,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 5915 transitions. [2021-08-12 18:49:36,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:36,821 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:36,821 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:36,821 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-08-12 18:49:36,821 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]=== [2021-08-12 18:49:36,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:36,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1472172765, now seen corresponding path program 51 times [2021-08-12 18:49:36,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:36,821 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297445761] [2021-08-12 18:49:36,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:36,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:36,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:36,940 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:36,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297445761] [2021-08-12 18:49:36,940 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297445761] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:36,940 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:36,940 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:36,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299859108] [2021-08-12 18:49:36,940 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:36,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:36,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:36,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:36,941 INFO L87 Difference]: Start difference. First operand 1482 states and 5915 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:38,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:38,220 INFO L93 Difference]: Finished difference Result 3030 states and 11273 transitions. [2021-08-12 18:49:38,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:38,221 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:49:38,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:38,233 INFO L225 Difference]: With dead ends: 3030 [2021-08-12 18:49:38,233 INFO L226 Difference]: Without dead ends: 2870 [2021-08-12 18:49:38,234 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 126.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:49:38,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2870 states. [2021-08-12 18:49:38,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 1498. [2021-08-12 18:49:38,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1497 states have (on average 3.9832999331997327) internal successors, (5963), 1497 states have internal predecessors, (5963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:38,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 5963 transitions. [2021-08-12 18:49:38,423 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 5963 transitions. Word has length 25 [2021-08-12 18:49:38,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:38,423 INFO L482 AbstractCegarLoop]: Abstraction has 1498 states and 5963 transitions. [2021-08-12 18:49:38,424 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:38,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 5963 transitions. [2021-08-12 18:49:38,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:38,426 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:38,426 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:38,426 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-08-12 18:49:38,426 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]=== [2021-08-12 18:49:38,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:38,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1814496547, now seen corresponding path program 52 times [2021-08-12 18:49:38,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:38,427 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173306096] [2021-08-12 18:49:38,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:38,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:38,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:38,553 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:38,553 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173306096] [2021-08-12 18:49:38,553 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173306096] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:38,553 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:38,553 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:38,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105634031] [2021-08-12 18:49:38,554 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:38,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:38,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:38,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:38,554 INFO L87 Difference]: Start difference. First operand 1498 states and 5963 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:39,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:39,986 INFO L93 Difference]: Finished difference Result 3058 states and 11361 transitions. [2021-08-12 18:49:39,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:39,987 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:49:39,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:39,999 INFO L225 Difference]: With dead ends: 3058 [2021-08-12 18:49:40,000 INFO L226 Difference]: Without dead ends: 2854 [2021-08-12 18:49:40,001 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 136.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:49:40,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2021-08-12 18:49:40,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 1482. [2021-08-12 18:49:40,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1481 states have (on average 3.988521269412559) internal successors, (5907), 1481 states have internal predecessors, (5907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:40,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 5907 transitions. [2021-08-12 18:49:40,212 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 5907 transitions. Word has length 25 [2021-08-12 18:49:40,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:40,213 INFO L482 AbstractCegarLoop]: Abstraction has 1482 states and 5907 transitions. [2021-08-12 18:49:40,213 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) [2021-08-12 18:49:40,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 5907 transitions. [2021-08-12 18:49:40,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:40,215 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:40,215 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:40,215 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-08-12 18:49:40,216 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]=== [2021-08-12 18:49:40,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:40,216 INFO L82 PathProgramCache]: Analyzing trace with hash -126250275, now seen corresponding path program 53 times [2021-08-12 18:49:40,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:40,216 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631590651] [2021-08-12 18:49:40,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:40,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:40,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:40,321 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:40,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631590651] [2021-08-12 18:49:40,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631590651] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:40,321 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:40,321 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:40,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785155460] [2021-08-12 18:49:40,322 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:40,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:40,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:40,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:40,322 INFO L87 Difference]: Start difference. First operand 1482 states and 5907 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:41,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:41,683 INFO L93 Difference]: Finished difference Result 3151 states and 11715 transitions. [2021-08-12 18:49:41,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:41,684 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 [2021-08-12 18:49:41,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:41,696 INFO L225 Difference]: With dead ends: 3151 [2021-08-12 18:49:41,697 INFO L226 Difference]: Without dead ends: 2963 [2021-08-12 18:49:41,698 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 131.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:49:41,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2021-08-12 18:49:41,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 1528. [2021-08-12 18:49:41,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1528 states, 1527 states have (on average 3.971185330713818) internal successors, (6064), 1527 states have internal predecessors, (6064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:41,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 6064 transitions. [2021-08-12 18:49:41,894 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 6064 transitions. Word has length 25 [2021-08-12 18:49:41,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:41,894 INFO L482 AbstractCegarLoop]: Abstraction has 1528 states and 6064 transitions. [2021-08-12 18:49:41,894 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) [2021-08-12 18:49:41,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 6064 transitions. [2021-08-12 18:49:41,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:41,896 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:41,897 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:41,897 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-08-12 18:49:41,897 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]=== [2021-08-12 18:49:41,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:41,897 INFO L82 PathProgramCache]: Analyzing trace with hash -479389765, now seen corresponding path program 54 times [2021-08-12 18:49:41,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:41,897 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704364639] [2021-08-12 18:49:41,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:41,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:42,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:42,002 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:42,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704364639] [2021-08-12 18:49:42,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704364639] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:42,002 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:42,002 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:42,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071442426] [2021-08-12 18:49:42,003 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:42,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:42,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:42,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:42,003 INFO L87 Difference]: Start difference. First operand 1528 states and 6064 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:43,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:43,425 INFO L93 Difference]: Finished difference Result 3186 states and 11804 transitions. [2021-08-12 18:49:43,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:43,426 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 [2021-08-12 18:49:43,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:43,437 INFO L225 Difference]: With dead ends: 3186 [2021-08-12 18:49:43,438 INFO L226 Difference]: Without dead ends: 2901 [2021-08-12 18:49:43,438 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 116.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:49:43,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2021-08-12 18:49:43,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 1466. [2021-08-12 18:49:43,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1466 states, 1465 states have (on average 3.9938566552901023) internal successors, (5851), 1465 states have internal predecessors, (5851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:43,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 5851 transitions. [2021-08-12 18:49:43,627 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 5851 transitions. Word has length 25 [2021-08-12 18:49:43,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:43,627 INFO L482 AbstractCegarLoop]: Abstraction has 1466 states and 5851 transitions. [2021-08-12 18:49:43,627 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) [2021-08-12 18:49:43,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 5851 transitions. [2021-08-12 18:49:43,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:43,630 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:43,630 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:43,630 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-08-12 18:49:43,630 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]=== [2021-08-12 18:49:43,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:43,630 INFO L82 PathProgramCache]: Analyzing trace with hash -2102226275, now seen corresponding path program 55 times [2021-08-12 18:49:43,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:43,630 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636933421] [2021-08-12 18:49:43,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:43,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:43,734 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:43,734 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636933421] [2021-08-12 18:49:43,734 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636933421] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:43,734 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:43,734 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:43,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314018883] [2021-08-12 18:49:43,735 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:43,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:43,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:43,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:43,735 INFO L87 Difference]: Start difference. First operand 1466 states and 5851 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:45,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:45,124 INFO L93 Difference]: Finished difference Result 3075 states and 11445 transitions. [2021-08-12 18:49:45,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:45,124 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 [2021-08-12 18:49:45,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:45,136 INFO L225 Difference]: With dead ends: 3075 [2021-08-12 18:49:45,137 INFO L226 Difference]: Without dead ends: 2915 [2021-08-12 18:49:45,137 INFO L806 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 [2021-08-12 18:49:45,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2021-08-12 18:49:45,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 1514. [2021-08-12 18:49:45,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 1513 states have (on average 3.9887640449438204) internal successors, (6035), 1513 states have internal predecessors, (6035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:45,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 6035 transitions. [2021-08-12 18:49:45,334 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 6035 transitions. Word has length 25 [2021-08-12 18:49:45,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:45,334 INFO L482 AbstractCegarLoop]: Abstraction has 1514 states and 6035 transitions. [2021-08-12 18:49:45,334 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:45,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 6035 transitions. [2021-08-12 18:49:45,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:45,337 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:45,337 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:45,337 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-08-12 18:49:45,337 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]=== [2021-08-12 18:49:45,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:45,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1184443037, now seen corresponding path program 56 times [2021-08-12 18:49:45,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:45,337 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852493945] [2021-08-12 18:49:45,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:45,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:45,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:45,452 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:45,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852493945] [2021-08-12 18:49:45,453 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852493945] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:45,453 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:45,453 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:45,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152061995] [2021-08-12 18:49:45,453 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:45,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:45,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:45,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:45,453 INFO L87 Difference]: Start difference. First operand 1514 states and 6035 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:47,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:47,046 INFO L93 Difference]: Finished difference Result 3138 states and 11652 transitions. [2021-08-12 18:49:47,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:47,047 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 [2021-08-12 18:49:47,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:47,059 INFO L225 Difference]: With dead ends: 3138 [2021-08-12 18:49:47,059 INFO L226 Difference]: Without dead ends: 2883 [2021-08-12 18:49:47,060 INFO L806 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 [2021-08-12 18:49:47,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2883 states. [2021-08-12 18:49:47,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2883 to 1482. [2021-08-12 18:49:47,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1481 states have (on average 3.988521269412559) internal successors, (5907), 1481 states have internal predecessors, (5907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:47,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 5907 transitions. [2021-08-12 18:49:47,279 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 5907 transitions. Word has length 25 [2021-08-12 18:49:47,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:47,279 INFO L482 AbstractCegarLoop]: Abstraction has 1482 states and 5907 transitions. [2021-08-12 18:49:47,279 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) [2021-08-12 18:49:47,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 5907 transitions. [2021-08-12 18:49:47,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:47,281 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:47,282 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:47,282 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-08-12 18:49:47,282 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]=== [2021-08-12 18:49:47,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:47,282 INFO L82 PathProgramCache]: Analyzing trace with hash -2096473507, now seen corresponding path program 57 times [2021-08-12 18:49:47,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:47,282 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748291722] [2021-08-12 18:49:47,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:47,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:47,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:47,384 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:47,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748291722] [2021-08-12 18:49:47,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748291722] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:47,385 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:47,385 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:47,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172489375] [2021-08-12 18:49:47,385 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:47,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:47,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:47,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:47,386 INFO L87 Difference]: Start difference. First operand 1482 states and 5907 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:48,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:48,806 INFO L93 Difference]: Finished difference Result 3020 states and 11234 transitions. [2021-08-12 18:49:48,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:48,806 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:49:48,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:48,823 INFO L225 Difference]: With dead ends: 3020 [2021-08-12 18:49:48,823 INFO L226 Difference]: Without dead ends: 2860 [2021-08-12 18:49:48,824 INFO L806 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 [2021-08-12 18:49:48,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2860 states. [2021-08-12 18:49:49,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2860 to 1498. [2021-08-12 18:49:49,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1497 states have (on average 3.9779559118236474) internal successors, (5955), 1497 states have internal predecessors, (5955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:49,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 5955 transitions. [2021-08-12 18:49:49,103 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 5955 transitions. Word has length 25 [2021-08-12 18:49:49,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:49,104 INFO L482 AbstractCegarLoop]: Abstraction has 1498 states and 5955 transitions. [2021-08-12 18:49:49,104 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:49,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 5955 transitions. [2021-08-12 18:49:49,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:49,107 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:49,108 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:49,108 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-08-12 18:49:49,108 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]=== [2021-08-12 18:49:49,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:49,108 INFO L82 PathProgramCache]: Analyzing trace with hash -415976867, now seen corresponding path program 58 times [2021-08-12 18:49:49,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:49,108 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075929515] [2021-08-12 18:49:49,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:49,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:49,217 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:49,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075929515] [2021-08-12 18:49:49,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075929515] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:49,217 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:49,217 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:49,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593706540] [2021-08-12 18:49:49,218 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:49,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:49,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:49,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:49,219 INFO L87 Difference]: Start difference. First operand 1498 states and 5955 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:50,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:50,775 INFO L93 Difference]: Finished difference Result 3044 states and 11310 transitions. [2021-08-12 18:49:50,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:50,775 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:49:50,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:50,788 INFO L225 Difference]: With dead ends: 3044 [2021-08-12 18:49:50,788 INFO L226 Difference]: Without dead ends: 2844 [2021-08-12 18:49:50,789 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 124.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:49:50,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2844 states. [2021-08-12 18:49:50,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2844 to 1482. [2021-08-12 18:49:50,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1481 states have (on average 3.9831195138419986) internal successors, (5899), 1481 states have internal predecessors, (5899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:50,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 5899 transitions. [2021-08-12 18:49:50,988 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 5899 transitions. Word has length 25 [2021-08-12 18:49:50,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:50,988 INFO L482 AbstractCegarLoop]: Abstraction has 1482 states and 5899 transitions. [2021-08-12 18:49:50,989 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:50,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 5899 transitions. [2021-08-12 18:49:50,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:50,991 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:50,991 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:50,991 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-08-12 18:49:50,991 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]=== [2021-08-12 18:49:50,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:50,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1272269405, now seen corresponding path program 59 times [2021-08-12 18:49:50,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:50,992 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934032152] [2021-08-12 18:49:50,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:50,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:51,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:51,108 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:51,109 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934032152] [2021-08-12 18:49:51,109 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934032152] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:51,109 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:51,109 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:51,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569023711] [2021-08-12 18:49:51,109 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:51,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:51,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:51,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:51,110 INFO L87 Difference]: Start difference. First operand 1482 states and 5899 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:52,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:52,835 INFO L93 Difference]: Finished difference Result 3135 states and 11657 transitions. [2021-08-12 18:49:52,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:52,835 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:49:52,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:52,847 INFO L225 Difference]: With dead ends: 3135 [2021-08-12 18:49:52,848 INFO L226 Difference]: Without dead ends: 2951 [2021-08-12 18:49:52,848 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 136.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:49:52,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2021-08-12 18:49:53,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 1526. [2021-08-12 18:49:53,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1526 states, 1525 states have (on average 3.9678688524590164) internal successors, (6051), 1525 states have internal predecessors, (6051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:53,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 6051 transitions. [2021-08-12 18:49:53,063 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 6051 transitions. Word has length 25 [2021-08-12 18:49:53,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:53,064 INFO L482 AbstractCegarLoop]: Abstraction has 1526 states and 6051 transitions. [2021-08-12 18:49:53,064 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) [2021-08-12 18:49:53,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 6051 transitions. [2021-08-12 18:49:53,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:53,066 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:53,067 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:53,067 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-08-12 18:49:53,067 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]=== [2021-08-12 18:49:53,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:53,067 INFO L82 PathProgramCache]: Analyzing trace with hash 267937467, now seen corresponding path program 60 times [2021-08-12 18:49:53,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:53,067 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739185777] [2021-08-12 18:49:53,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:53,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:53,178 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:53,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739185777] [2021-08-12 18:49:53,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739185777] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:53,178 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:53,178 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:53,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744412919] [2021-08-12 18:49:53,179 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:53,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:53,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:53,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:53,179 INFO L87 Difference]: Start difference. First operand 1526 states and 6051 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:54,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:54,777 INFO L93 Difference]: Finished difference Result 3174 states and 11760 transitions. [2021-08-12 18:49:54,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:54,777 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 [2021-08-12 18:49:54,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:54,790 INFO L225 Difference]: With dead ends: 3174 [2021-08-12 18:49:54,790 INFO L226 Difference]: Without dead ends: 2891 [2021-08-12 18:49:54,791 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:49:54,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2891 states. [2021-08-12 18:49:54,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2891 to 1466. [2021-08-12 18:49:54,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1466 states, 1465 states have (on average 3.98839590443686) internal successors, (5843), 1465 states have internal predecessors, (5843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:54,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 5843 transitions. [2021-08-12 18:49:55,004 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 5843 transitions. Word has length 25 [2021-08-12 18:49:55,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:55,004 INFO L482 AbstractCegarLoop]: Abstraction has 1466 states and 5843 transitions. [2021-08-12 18:49:55,004 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) [2021-08-12 18:49:55,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 5843 transitions. [2021-08-12 18:49:55,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:55,008 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:55,008 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:55,008 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-08-12 18:49:55,008 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]=== [2021-08-12 18:49:55,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:55,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1734106623, now seen corresponding path program 61 times [2021-08-12 18:49:55,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:55,009 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004079220] [2021-08-12 18:49:55,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:55,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:55,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:55,120 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:55,121 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004079220] [2021-08-12 18:49:55,121 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004079220] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:55,121 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:55,121 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:55,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873133797] [2021-08-12 18:49:55,122 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:55,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:55,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:55,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:55,122 INFO L87 Difference]: Start difference. First operand 1466 states and 5843 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:56,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:56,587 INFO L93 Difference]: Finished difference Result 2949 states and 10971 transitions. [2021-08-12 18:49:56,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:56,587 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 [2021-08-12 18:49:56,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:56,600 INFO L225 Difference]: With dead ends: 2949 [2021-08-12 18:49:56,600 INFO L226 Difference]: Without dead ends: 2789 [2021-08-12 18:49:56,601 INFO L806 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 [2021-08-12 18:49:56,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2789 states. [2021-08-12 18:49:56,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2789 to 1490. [2021-08-12 18:49:56,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1490 states, 1489 states have (on average 3.9805238415043656) internal successors, (5927), 1489 states have internal predecessors, (5927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:56,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 5927 transitions. [2021-08-12 18:49:56,813 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 5927 transitions. Word has length 25 [2021-08-12 18:49:56,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:56,813 INFO L482 AbstractCegarLoop]: Abstraction has 1490 states and 5927 transitions. [2021-08-12 18:49:56,813 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) [2021-08-12 18:49:56,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 5927 transitions. [2021-08-12 18:49:56,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:56,816 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:56,816 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:56,816 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-08-12 18:49:56,816 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]=== [2021-08-12 18:49:56,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:56,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1552562689, now seen corresponding path program 62 times [2021-08-12 18:49:56,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:56,817 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221760000] [2021-08-12 18:49:56,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:56,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:56,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:56,944 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:56,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221760000] [2021-08-12 18:49:56,944 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221760000] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:56,944 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:56,944 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:56,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931510710] [2021-08-12 18:49:56,944 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:56,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:56,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:56,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:56,946 INFO L87 Difference]: Start difference. First operand 1490 states and 5927 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:58,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:49:58,467 INFO L93 Difference]: Finished difference Result 2977 states and 11059 transitions. [2021-08-12 18:49:58,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:49:58,468 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:49:58,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:49:58,481 INFO L225 Difference]: With dead ends: 2977 [2021-08-12 18:49:58,481 INFO L226 Difference]: Without dead ends: 2773 [2021-08-12 18:49:58,482 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 141.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:49:58,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2773 states. [2021-08-12 18:49:58,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2773 to 1474. [2021-08-12 18:49:58,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1473 states have (on average 3.9857433808553973) internal successors, (5871), 1473 states have internal predecessors, (5871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:49:58,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 5871 transitions. [2021-08-12 18:49:58,701 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 5871 transitions. Word has length 25 [2021-08-12 18:49:58,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:49:58,701 INFO L482 AbstractCegarLoop]: Abstraction has 1474 states and 5871 transitions. [2021-08-12 18:49:58,702 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) [2021-08-12 18:49:58,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 5871 transitions. [2021-08-12 18:49:58,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:49:58,704 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:49:58,704 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:49:58,704 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-08-12 18:49:58,704 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]=== [2021-08-12 18:49:58,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:49:58,704 INFO L82 PathProgramCache]: Analyzing trace with hash 887309661, now seen corresponding path program 63 times [2021-08-12 18:49:58,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:49:58,705 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892055723] [2021-08-12 18:49:58,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:49:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:49:58,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:49:58,799 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:49:58,799 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892055723] [2021-08-12 18:49:58,799 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892055723] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:49:58,799 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:49:58,799 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:49:58,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292108933] [2021-08-12 18:49:58,799 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:49:58,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:49:58,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:49:58,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:49:58,799 INFO L87 Difference]: Start difference. First operand 1474 states and 5871 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:00,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:50:00,277 INFO L93 Difference]: Finished difference Result 2945 states and 10951 transitions. [2021-08-12 18:50:00,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:50:00,278 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 [2021-08-12 18:50:00,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:50:00,291 INFO L225 Difference]: With dead ends: 2945 [2021-08-12 18:50:00,291 INFO L226 Difference]: Without dead ends: 2785 [2021-08-12 18:50:00,292 INFO L806 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 [2021-08-12 18:50:00,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2785 states. [2021-08-12 18:50:00,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2785 to 1490. [2021-08-12 18:50:00,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1490 states, 1489 states have (on average 3.9751511081262594) internal successors, (5919), 1489 states have internal predecessors, (5919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:00,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 5919 transitions. [2021-08-12 18:50:00,506 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 5919 transitions. Word has length 25 [2021-08-12 18:50:00,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:50:00,506 INFO L482 AbstractCegarLoop]: Abstraction has 1490 states and 5919 transitions. [2021-08-12 18:50:00,506 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:00,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 5919 transitions. [2021-08-12 18:50:00,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:50:00,510 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:50:00,510 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:50:00,510 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-08-12 18:50:00,510 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]=== [2021-08-12 18:50:00,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:50:00,511 INFO L82 PathProgramCache]: Analyzing trace with hash 857449983, now seen corresponding path program 64 times [2021-08-12 18:50:00,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:50:00,511 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486410557] [2021-08-12 18:50:00,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:50:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:50:00,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:50:00,599 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:50:00,599 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486410557] [2021-08-12 18:50:00,599 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486410557] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:50:00,599 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:50:00,600 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:50:00,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827075254] [2021-08-12 18:50:00,600 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:50:00,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:50:00,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:50:00,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:50:00,600 INFO L87 Difference]: Start difference. First operand 1490 states and 5919 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:02,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:50:02,150 INFO L93 Difference]: Finished difference Result 2969 states and 11027 transitions. [2021-08-12 18:50:02,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:50:02,150 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:50:02,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:50:02,162 INFO L225 Difference]: With dead ends: 2969 [2021-08-12 18:50:02,163 INFO L226 Difference]: Without dead ends: 2769 [2021-08-12 18:50:02,163 INFO L806 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 [2021-08-12 18:50:02,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states. [2021-08-12 18:50:02,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 1474. [2021-08-12 18:50:02,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1473 states have (on average 3.9803122878479296) internal successors, (5863), 1473 states have internal predecessors, (5863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:02,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 5863 transitions. [2021-08-12 18:50:02,375 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 5863 transitions. Word has length 25 [2021-08-12 18:50:02,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:50:02,375 INFO L482 AbstractCegarLoop]: Abstraction has 1474 states and 5863 transitions. [2021-08-12 18:50:02,376 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) [2021-08-12 18:50:02,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 5863 transitions. [2021-08-12 18:50:02,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:50:02,378 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:50:02,378 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:50:02,378 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-08-12 18:50:02,378 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]=== [2021-08-12 18:50:02,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:50:02,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1502994945, now seen corresponding path program 65 times [2021-08-12 18:50:02,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:50:02,378 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797557329] [2021-08-12 18:50:02,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:50:02,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:50:02,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:50:02,466 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:50:02,466 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797557329] [2021-08-12 18:50:02,466 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797557329] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:50:02,467 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:50:02,467 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:50:02,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881571983] [2021-08-12 18:50:02,467 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:50:02,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:50:02,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:50:02,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:50:02,467 INFO L87 Difference]: Start difference. First operand 1474 states and 5863 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:04,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:50:04,118 INFO L93 Difference]: Finished difference Result 3013 states and 11203 transitions. [2021-08-12 18:50:04,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:50:04,118 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 [2021-08-12 18:50:04,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:50:04,131 INFO L225 Difference]: With dead ends: 3013 [2021-08-12 18:50:04,131 INFO L226 Difference]: Without dead ends: 2825 [2021-08-12 18:50:04,132 INFO L806 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 [2021-08-12 18:50:04,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2825 states. [2021-08-12 18:50:04,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2825 to 1502. [2021-08-12 18:50:04,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 1501 states have (on average 3.9646902065289806) internal successors, (5951), 1501 states have internal predecessors, (5951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:04,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 5951 transitions. [2021-08-12 18:50:04,347 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 5951 transitions. Word has length 25 [2021-08-12 18:50:04,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:50:04,347 INFO L482 AbstractCegarLoop]: Abstraction has 1502 states and 5951 transitions. [2021-08-12 18:50:04,347 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:04,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 5951 transitions. [2021-08-12 18:50:04,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:50:04,349 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:50:04,350 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:50:04,350 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-08-12 18:50:04,350 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]=== [2021-08-12 18:50:04,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:50:04,350 INFO L82 PathProgramCache]: Analyzing trace with hash 748635357, now seen corresponding path program 66 times [2021-08-12 18:50:04,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:50:04,350 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37958334] [2021-08-12 18:50:04,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:50:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:50:04,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:50:04,454 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:50:04,454 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37958334] [2021-08-12 18:50:04,454 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37958334] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:50:04,454 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:50:04,455 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:50:04,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034454164] [2021-08-12 18:50:04,455 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:50:04,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:50:04,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:50:04,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:50:04,455 INFO L87 Difference]: Start difference. First operand 1502 states and 5951 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:06,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:50:06,247 INFO L93 Difference]: Finished difference Result 3009 states and 11163 transitions. [2021-08-12 18:50:06,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:50:06,247 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:50:06,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:50:06,261 INFO L225 Difference]: With dead ends: 3009 [2021-08-12 18:50:06,261 INFO L226 Difference]: Without dead ends: 2789 [2021-08-12 18:50:06,262 INFO L806 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 [2021-08-12 18:50:06,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2789 states. [2021-08-12 18:50:06,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2789 to 1466. [2021-08-12 18:50:06,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1466 states, 1465 states have (on average 3.9856655290102387) internal successors, (5839), 1465 states have internal predecessors, (5839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:06,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 5839 transitions. [2021-08-12 18:50:06,490 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 5839 transitions. Word has length 25 [2021-08-12 18:50:06,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:50:06,491 INFO L482 AbstractCegarLoop]: Abstraction has 1466 states and 5839 transitions. [2021-08-12 18:50:06,491 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) [2021-08-12 18:50:06,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 5839 transitions. [2021-08-12 18:50:06,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:50:06,493 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:50:06,493 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:50:06,493 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-08-12 18:50:06,493 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]=== [2021-08-12 18:50:06,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:50:06,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1699001855, now seen corresponding path program 67 times [2021-08-12 18:50:06,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:50:06,494 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362123764] [2021-08-12 18:50:06,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:50:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:50:06,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:50:06,588 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:50:06,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362123764] [2021-08-12 18:50:06,589 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362123764] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:50:06,589 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:50:06,589 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:50:06,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962239308] [2021-08-12 18:50:06,589 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:50:06,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:50:06,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:50:06,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:50:06,590 INFO L87 Difference]: Start difference. First operand 1466 states and 5839 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:08,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:50:08,309 INFO L93 Difference]: Finished difference Result 3148 states and 11742 transitions. [2021-08-12 18:50:08,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:50:08,321 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:50:08,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:50:08,351 INFO L225 Difference]: With dead ends: 3148 [2021-08-12 18:50:08,351 INFO L226 Difference]: Without dead ends: 2960 [2021-08-12 18:50:08,352 INFO L806 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 [2021-08-12 18:50:08,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2021-08-12 18:50:08,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 1516. [2021-08-12 18:50:08,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1516 states, 1515 states have (on average 3.9788778877887787) internal successors, (6028), 1515 states have internal predecessors, (6028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:08,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 6028 transitions. [2021-08-12 18:50:08,601 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 6028 transitions. Word has length 25 [2021-08-12 18:50:08,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:50:08,601 INFO L482 AbstractCegarLoop]: Abstraction has 1516 states and 6028 transitions. [2021-08-12 18:50:08,601 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:08,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 6028 transitions. [2021-08-12 18:50:08,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:50:08,604 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:50:08,604 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:50:08,604 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-08-12 18:50:08,604 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]=== [2021-08-12 18:50:08,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:50:08,605 INFO L82 PathProgramCache]: Analyzing trace with hash -344335139, now seen corresponding path program 68 times [2021-08-12 18:50:08,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:50:08,605 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989194675] [2021-08-12 18:50:08,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:50:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:50:08,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:50:08,716 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:50:08,716 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989194675] [2021-08-12 18:50:08,716 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989194675] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:50:08,716 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:50:08,716 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:50:08,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748268448] [2021-08-12 18:50:08,717 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:50:08,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:50:08,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:50:08,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:50:08,717 INFO L87 Difference]: Start difference. First operand 1516 states and 6028 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:10,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:50:10,446 INFO L93 Difference]: Finished difference Result 3144 states and 11702 transitions. [2021-08-12 18:50:10,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:50:10,446 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 [2021-08-12 18:50:10,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:50:10,460 INFO L225 Difference]: With dead ends: 3144 [2021-08-12 18:50:10,460 INFO L226 Difference]: Without dead ends: 2932 [2021-08-12 18:50:10,461 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 117.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:50:10,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2021-08-12 18:50:10,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 1488. [2021-08-12 18:50:10,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1487 states have (on average 3.985205110961668) internal successors, (5926), 1487 states have internal predecessors, (5926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:10,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 5926 transitions. [2021-08-12 18:50:10,722 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 5926 transitions. Word has length 25 [2021-08-12 18:50:10,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:50:10,722 INFO L482 AbstractCegarLoop]: Abstraction has 1488 states and 5926 transitions. [2021-08-12 18:50:10,722 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) [2021-08-12 18:50:10,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 5926 transitions. [2021-08-12 18:50:10,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:50:10,725 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:50:10,725 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:50:10,725 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-08-12 18:50:10,725 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]=== [2021-08-12 18:50:10,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:50:10,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1391316259, now seen corresponding path program 69 times [2021-08-12 18:50:10,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:50:10,726 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997465740] [2021-08-12 18:50:10,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:50:10,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:50:10,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:50:10,818 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:50:10,818 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997465740] [2021-08-12 18:50:10,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997465740] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:50:10,818 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:50:10,818 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:50:10,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499226939] [2021-08-12 18:50:10,818 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:50:10,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:50:10,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:50:10,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:50:10,819 INFO L87 Difference]: Start difference. First operand 1488 states and 5926 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:12,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:50:12,789 INFO L93 Difference]: Finished difference Result 3205 states and 11930 transitions. [2021-08-12 18:50:12,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:50:12,791 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:50:12,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:50:12,806 INFO L225 Difference]: With dead ends: 3205 [2021-08-12 18:50:12,806 INFO L226 Difference]: Without dead ends: 3017 [2021-08-12 18:50:12,807 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:50:12,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3017 states. [2021-08-12 18:50:13,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3017 to 1534. [2021-08-12 18:50:13,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1534 states, 1533 states have (on average 3.9680365296803655) internal successors, (6083), 1533 states have internal predecessors, (6083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:13,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1534 states to 1534 states and 6083 transitions. [2021-08-12 18:50:13,057 INFO L78 Accepts]: Start accepts. Automaton has 1534 states and 6083 transitions. Word has length 25 [2021-08-12 18:50:13,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:50:13,057 INFO L482 AbstractCegarLoop]: Abstraction has 1534 states and 6083 transitions. [2021-08-12 18:50:13,057 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:13,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1534 states and 6083 transitions. [2021-08-12 18:50:13,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:50:13,060 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:50:13,060 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:50:13,060 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-08-12 18:50:13,060 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]=== [2021-08-12 18:50:13,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:50:13,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1310426403, now seen corresponding path program 70 times [2021-08-12 18:50:13,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:50:13,060 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431776443] [2021-08-12 18:50:13,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:50:13,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:50:13,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:50:13,144 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:50:13,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431776443] [2021-08-12 18:50:13,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431776443] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:50:13,144 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:50:13,144 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:50:13,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953495044] [2021-08-12 18:50:13,144 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:50:13,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:50:13,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:50:13,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:50:13,145 INFO L87 Difference]: Start difference. First operand 1534 states and 6083 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:15,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:50:15,017 INFO L93 Difference]: Finished difference Result 3240 states and 12019 transitions. [2021-08-12 18:50:15,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:50:15,018 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:50:15,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:50:15,033 INFO L225 Difference]: With dead ends: 3240 [2021-08-12 18:50:15,033 INFO L226 Difference]: Without dead ends: 2971 [2021-08-12 18:50:15,035 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 85.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:50:15,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2021-08-12 18:50:15,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 1488. [2021-08-12 18:50:15,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1487 states have (on average 3.9704102219233355) internal successors, (5904), 1487 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:15,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 5904 transitions. [2021-08-12 18:50:15,276 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 5904 transitions. Word has length 25 [2021-08-12 18:50:15,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:50:15,276 INFO L482 AbstractCegarLoop]: Abstraction has 1488 states and 5904 transitions. [2021-08-12 18:50:15,276 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:15,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 5904 transitions. [2021-08-12 18:50:15,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:50:15,279 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:50:15,279 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:50:15,279 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-08-12 18:50:15,279 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]=== [2021-08-12 18:50:15,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:50:15,279 INFO L82 PathProgramCache]: Analyzing trace with hash -408968645, now seen corresponding path program 71 times [2021-08-12 18:50:15,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:50:15,280 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952842801] [2021-08-12 18:50:15,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:50:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:50:15,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:50:15,407 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:50:15,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952842801] [2021-08-12 18:50:15,407 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952842801] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:50:15,407 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:50:15,407 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:50:15,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785993568] [2021-08-12 18:50:15,408 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:50:15,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:50:15,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:50:15,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:50:15,408 INFO L87 Difference]: Start difference. First operand 1488 states and 5904 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:17,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:50:17,426 INFO L93 Difference]: Finished difference Result 3195 states and 11877 transitions. [2021-08-12 18:50:17,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:50:17,426 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 [2021-08-12 18:50:17,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:50:17,440 INFO L225 Difference]: With dead ends: 3195 [2021-08-12 18:50:17,440 INFO L226 Difference]: Without dead ends: 3011 [2021-08-12 18:50:17,441 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 135.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:50:17,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3011 states. [2021-08-12 18:50:17,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3011 to 1532. [2021-08-12 18:50:17,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1532 states, 1531 states have (on average 3.955584585238406) internal successors, (6056), 1531 states have internal predecessors, (6056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:17,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1532 states to 1532 states and 6056 transitions. [2021-08-12 18:50:17,678 INFO L78 Accepts]: Start accepts. Automaton has 1532 states and 6056 transitions. Word has length 25 [2021-08-12 18:50:17,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:50:17,679 INFO L482 AbstractCegarLoop]: Abstraction has 1532 states and 6056 transitions. [2021-08-12 18:50:17,679 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) [2021-08-12 18:50:17,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1532 states and 6056 transitions. [2021-08-12 18:50:17,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:50:17,681 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:50:17,681 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:50:17,681 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-08-12 18:50:17,681 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]=== [2021-08-12 18:50:17,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:50:17,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1478487651, now seen corresponding path program 72 times [2021-08-12 18:50:17,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:50:17,682 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565854636] [2021-08-12 18:50:17,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:50:17,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:50:17,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:50:17,788 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:50:17,788 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565854636] [2021-08-12 18:50:17,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565854636] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:50:17,788 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:50:17,788 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:50:17,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168440327] [2021-08-12 18:50:17,788 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:50:17,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:50:17,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:50:17,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:50:17,789 INFO L87 Difference]: Start difference. First operand 1532 states and 6056 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:19,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:50:19,770 INFO L93 Difference]: Finished difference Result 3234 states and 11980 transitions. [2021-08-12 18:50:19,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:50:19,771 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:50:19,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:50:19,785 INFO L225 Difference]: With dead ends: 3234 [2021-08-12 18:50:19,785 INFO L226 Difference]: Without dead ends: 2937 [2021-08-12 18:50:19,786 INFO L806 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 [2021-08-12 18:50:19,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2021-08-12 18:50:20,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1458. [2021-08-12 18:50:20,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 1457 states have (on average 3.9910775566231984) internal successors, (5815), 1457 states have internal predecessors, (5815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:20,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 5815 transitions. [2021-08-12 18:50:20,025 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 5815 transitions. Word has length 25 [2021-08-12 18:50:20,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:50:20,025 INFO L482 AbstractCegarLoop]: Abstraction has 1458 states and 5815 transitions. [2021-08-12 18:50:20,026 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) [2021-08-12 18:50:20,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 5815 transitions. [2021-08-12 18:50:20,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:50:20,028 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:50:20,028 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:50:20,028 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-08-12 18:50:20,028 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]=== [2021-08-12 18:50:20,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:50:20,029 INFO L82 PathProgramCache]: Analyzing trace with hash -2109839913, now seen corresponding path program 73 times [2021-08-12 18:50:20,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:50:20,029 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267080302] [2021-08-12 18:50:20,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:50:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:50:20,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:50:20,135 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:50:20,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267080302] [2021-08-12 18:50:20,135 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267080302] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:50:20,135 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:50:20,135 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:50:20,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787211165] [2021-08-12 18:50:20,135 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:50:20,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:50:20,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:50:20,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:50:20,136 INFO L87 Difference]: Start difference. First operand 1458 states and 5815 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:22,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:50:22,060 INFO L93 Difference]: Finished difference Result 2850 states and 10578 transitions. [2021-08-12 18:50:22,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:50:22,060 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:50:22,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:50:22,075 INFO L225 Difference]: With dead ends: 2850 [2021-08-12 18:50:22,075 INFO L226 Difference]: Without dead ends: 2690 [2021-08-12 18:50:22,076 INFO L806 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 [2021-08-12 18:50:22,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2690 states. [2021-08-12 18:50:22,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2690 to 1486. [2021-08-12 18:50:22,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 3.985858585858586) internal successors, (5919), 1485 states have internal predecessors, (5919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:22,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5919 transitions. [2021-08-12 18:50:22,350 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5919 transitions. Word has length 25 [2021-08-12 18:50:22,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:50:22,350 INFO L482 AbstractCegarLoop]: Abstraction has 1486 states and 5919 transitions. [2021-08-12 18:50:22,350 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) [2021-08-12 18:50:22,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5919 transitions. [2021-08-12 18:50:22,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:50:22,353 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:50:22,353 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:50:22,354 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-08-12 18:50:22,354 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]=== [2021-08-12 18:50:22,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:50:22,354 INFO L82 PathProgramCache]: Analyzing trace with hash 595192633, now seen corresponding path program 74 times [2021-08-12 18:50:22,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:50:22,354 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755768745] [2021-08-12 18:50:22,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:50:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:50:22,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:50:22,519 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:50:22,519 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755768745] [2021-08-12 18:50:22,521 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755768745] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:50:22,522 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:50:22,522 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:50:22,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172767753] [2021-08-12 18:50:22,522 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:50:22,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:50:22,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:50:22,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:50:22,522 INFO L87 Difference]: Start difference. First operand 1486 states and 5919 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:24,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:50:24,564 INFO L93 Difference]: Finished difference Result 2880 states and 10671 transitions. [2021-08-12 18:50:24,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:50:24,565 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:50:24,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:50:24,580 INFO L225 Difference]: With dead ends: 2880 [2021-08-12 18:50:24,580 INFO L226 Difference]: Without dead ends: 2674 [2021-08-12 18:50:24,581 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 141.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:50:24,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2021-08-12 18:50:24,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 1470. [2021-08-12 18:50:24,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 3.9911504424778763) internal successors, (5863), 1469 states have internal predecessors, (5863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:24,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5863 transitions. [2021-08-12 18:50:24,849 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5863 transitions. Word has length 25 [2021-08-12 18:50:24,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:50:24,850 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 5863 transitions. [2021-08-12 18:50:24,850 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) [2021-08-12 18:50:24,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5863 transitions. [2021-08-12 18:50:24,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:50:24,852 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:50:24,853 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:50:24,853 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-08-12 18:50:24,853 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]=== [2021-08-12 18:50:24,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:50:24,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1028777287, now seen corresponding path program 75 times [2021-08-12 18:50:24,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:50:24,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932461503] [2021-08-12 18:50:24,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:50:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:50:25,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:50:25,044 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:50:25,044 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932461503] [2021-08-12 18:50:25,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932461503] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:50:25,044 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:50:25,044 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:50:25,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045292127] [2021-08-12 18:50:25,044 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:50:25,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:50:25,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:50:25,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:50:25,045 INFO L87 Difference]: Start difference. First operand 1470 states and 5863 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:26,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:50:27,000 INFO L93 Difference]: Finished difference Result 2848 states and 10565 transitions. [2021-08-12 18:50:27,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:50:27,000 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 [2021-08-12 18:50:27,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:50:27,014 INFO L225 Difference]: With dead ends: 2848 [2021-08-12 18:50:27,015 INFO L226 Difference]: Without dead ends: 2688 [2021-08-12 18:50:27,015 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 185.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:50:27,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2688 states. [2021-08-12 18:50:27,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2688 to 1486. [2021-08-12 18:50:27,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 3.9804713804713803) internal successors, (5911), 1485 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) [2021-08-12 18:50:27,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5911 transitions. [2021-08-12 18:50:27,276 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5911 transitions. Word has length 25 [2021-08-12 18:50:27,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:50:27,276 INFO L482 AbstractCegarLoop]: Abstraction has 1486 states and 5911 transitions. [2021-08-12 18:50:27,277 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) [2021-08-12 18:50:27,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5911 transitions. [2021-08-12 18:50:27,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:50:27,280 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:50:27,280 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:50:27,280 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-08-12 18:50:27,280 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]=== [2021-08-12 18:50:27,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:50:27,280 INFO L82 PathProgramCache]: Analyzing trace with hash -20479303, now seen corresponding path program 76 times [2021-08-12 18:50:27,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:50:27,281 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26934367] [2021-08-12 18:50:27,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:50:27,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:50:27,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:50:27,449 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:50:27,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26934367] [2021-08-12 18:50:27,450 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26934367] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:50:27,450 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:50:27,450 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:50:27,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818535990] [2021-08-12 18:50:27,450 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:50:27,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:50:27,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:50:27,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:50:27,450 INFO L87 Difference]: Start difference. First operand 1486 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) [2021-08-12 18:50:29,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:50:29,435 INFO L93 Difference]: Finished difference Result 2876 states and 10653 transitions. [2021-08-12 18:50:29,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:50:29,436 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:50:29,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:50:29,452 INFO L225 Difference]: With dead ends: 2876 [2021-08-12 18:50:29,453 INFO L226 Difference]: Without dead ends: 2672 [2021-08-12 18:50:29,454 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 173.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:50:29,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2672 states. [2021-08-12 18:50:29,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2672 to 1470. [2021-08-12 18:50:29,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 3.9857045609257997) internal successors, (5855), 1469 states have internal predecessors, (5855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:29,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5855 transitions. [2021-08-12 18:50:29,727 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5855 transitions. Word has length 25 [2021-08-12 18:50:29,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:50:29,727 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 5855 transitions. [2021-08-12 18:50:29,727 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) [2021-08-12 18:50:29,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5855 transitions. [2021-08-12 18:50:29,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:50:29,730 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:50:29,730 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:50:29,730 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-08-12 18:50:29,731 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]=== [2021-08-12 18:50:29,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:50:29,731 INFO L82 PathProgramCache]: Analyzing trace with hash 388384667, now seen corresponding path program 77 times [2021-08-12 18:50:29,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:50:29,731 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075234285] [2021-08-12 18:50:29,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:50:29,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:50:29,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:50:29,862 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:50:29,862 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075234285] [2021-08-12 18:50:29,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075234285] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:50:29,862 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:50:29,862 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:50:29,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162956247] [2021-08-12 18:50:29,863 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:50:29,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:50:29,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:50:29,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:50:29,863 INFO L87 Difference]: Start difference. First operand 1470 states and 5855 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:31,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:50:31,904 INFO L93 Difference]: Finished difference Result 2922 states and 10834 transitions. [2021-08-12 18:50:31,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:50:31,904 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:50:31,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:50:31,919 INFO L225 Difference]: With dead ends: 2922 [2021-08-12 18:50:31,919 INFO L226 Difference]: Without dead ends: 2732 [2021-08-12 18:50:31,920 INFO L806 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 [2021-08-12 18:50:31,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2021-08-12 18:50:32,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 1500. [2021-08-12 18:50:32,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 1499 states have (on average 3.9679786524349567) internal successors, (5948), 1499 states have internal predecessors, (5948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:32,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 5948 transitions. [2021-08-12 18:50:32,213 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 5948 transitions. Word has length 25 [2021-08-12 18:50:32,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:50:32,213 INFO L482 AbstractCegarLoop]: Abstraction has 1500 states and 5948 transitions. [2021-08-12 18:50:32,213 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) [2021-08-12 18:50:32,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 5948 transitions. [2021-08-12 18:50:32,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:50:32,216 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:50:32,216 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:50:32,216 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-08-12 18:50:32,216 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]=== [2021-08-12 18:50:32,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:50:32,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1654952327, now seen corresponding path program 78 times [2021-08-12 18:50:32,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:50:32,216 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8159096] [2021-08-12 18:50:32,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:50:32,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:50:32,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:50:32,310 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:50:32,310 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8159096] [2021-08-12 18:50:32,310 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8159096] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:50:32,310 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:50:32,310 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:50:32,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747517513] [2021-08-12 18:50:32,310 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:50:32,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:50:32,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:50:32,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:50:32,311 INFO L87 Difference]: Start difference. First operand 1500 states and 5948 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:34,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:50:34,358 INFO L93 Difference]: Finished difference Result 2920 states and 10799 transitions. [2021-08-12 18:50:34,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:50:34,359 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 [2021-08-12 18:50:34,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:50:34,375 INFO L225 Difference]: With dead ends: 2920 [2021-08-12 18:50:34,376 INFO L226 Difference]: Without dead ends: 2694 [2021-08-12 18:50:34,376 INFO L806 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 [2021-08-12 18:50:34,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2694 states. [2021-08-12 18:50:34,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2694 to 1462. [2021-08-12 18:50:34,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1462 states, 1461 states have (on average 3.9911019849418206) internal successors, (5831), 1461 states have internal predecessors, (5831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:34,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 5831 transitions. [2021-08-12 18:50:34,656 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 5831 transitions. Word has length 25 [2021-08-12 18:50:34,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:50:34,656 INFO L482 AbstractCegarLoop]: Abstraction has 1462 states and 5831 transitions. [2021-08-12 18:50:34,656 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) [2021-08-12 18:50:34,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 5831 transitions. [2021-08-12 18:50:34,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:50:34,659 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:50:34,659 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:50:34,659 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-08-12 18:50:34,660 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]=== [2021-08-12 18:50:34,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:50:34,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1704225337, now seen corresponding path program 79 times [2021-08-12 18:50:34,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:50:34,660 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433514827] [2021-08-12 18:50:34,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:50:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:50:34,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:50:34,754 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:50:34,754 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433514827] [2021-08-12 18:50:34,754 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433514827] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:50:34,754 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:50:34,754 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:50:34,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400695308] [2021-08-12 18:50:34,755 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:50:34,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:50:34,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:50:34,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:50:34,755 INFO L87 Difference]: Start difference. First operand 1462 states and 5831 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:36,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:50:36,818 INFO L93 Difference]: Finished difference Result 2844 states and 10555 transitions. [2021-08-12 18:50:36,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:50:36,819 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:50:36,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:50:36,835 INFO L225 Difference]: With dead ends: 2844 [2021-08-12 18:50:36,835 INFO L226 Difference]: Without dead ends: 2684 [2021-08-12 18:50:36,836 INFO L806 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 [2021-08-12 18:50:36,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2684 states. [2021-08-12 18:50:37,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2684 to 1486. [2021-08-12 18:50:37,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 3.983164983164983) internal successors, (5915), 1485 states have internal predecessors, (5915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:37,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5915 transitions. [2021-08-12 18:50:37,147 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5915 transitions. Word has length 25 [2021-08-12 18:50:37,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:50:37,147 INFO L482 AbstractCegarLoop]: Abstraction has 1486 states and 5915 transitions. [2021-08-12 18:50:37,147 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:37,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5915 transitions. [2021-08-12 18:50:37,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:50:37,149 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:50:37,149 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:50:37,150 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-08-12 18:50:37,150 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]=== [2021-08-12 18:50:37,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:50:37,150 INFO L82 PathProgramCache]: Analyzing trace with hash 114290587, now seen corresponding path program 80 times [2021-08-12 18:50:37,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:50:37,150 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210429710] [2021-08-12 18:50:37,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:50:37,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:50:37,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:50:37,243 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:50:37,243 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210429710] [2021-08-12 18:50:37,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210429710] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:50:37,243 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:50:37,243 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:50:37,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226734945] [2021-08-12 18:50:37,243 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:50:37,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:50:37,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:50:37,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:50:37,243 INFO L87 Difference]: Start difference. First operand 1486 states and 5915 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:39,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:50:39,383 INFO L93 Difference]: Finished difference Result 2874 states and 10648 transitions. [2021-08-12 18:50:39,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:50:39,384 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:50:39,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:50:39,401 INFO L225 Difference]: With dead ends: 2874 [2021-08-12 18:50:39,401 INFO L226 Difference]: Without dead ends: 2668 [2021-08-12 18:50:39,402 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 117.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:50:39,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2668 states. [2021-08-12 18:50:39,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2668 to 1470. [2021-08-12 18:50:39,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 3.988427501701838) internal successors, (5859), 1469 states have internal predecessors, (5859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:39,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5859 transitions. [2021-08-12 18:50:39,687 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5859 transitions. Word has length 25 [2021-08-12 18:50:39,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:50:39,687 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 5859 transitions. [2021-08-12 18:50:39,687 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) [2021-08-12 18:50:39,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5859 transitions. [2021-08-12 18:50:39,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:50:39,691 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:50:39,691 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:50:39,691 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-08-12 18:50:39,691 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]=== [2021-08-12 18:50:39,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:50:39,691 INFO L82 PathProgramCache]: Analyzing trace with hash 15979065, now seen corresponding path program 81 times [2021-08-12 18:50:39,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:50:39,691 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126374376] [2021-08-12 18:50:39,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:50:39,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:50:39,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:50:39,790 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:50:39,790 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126374376] [2021-08-12 18:50:39,790 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126374376] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:50:39,790 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:50:39,790 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:50:39,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976876517] [2021-08-12 18:50:39,790 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:50:39,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:50:39,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:50:39,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:50:39,791 INFO L87 Difference]: Start difference. First operand 1470 states and 5859 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:41,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:50:41,777 INFO L93 Difference]: Finished difference Result 2838 states and 10530 transitions. [2021-08-12 18:50:41,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:50:41,777 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 [2021-08-12 18:50:41,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:50:41,794 INFO L225 Difference]: With dead ends: 2838 [2021-08-12 18:50:41,794 INFO L226 Difference]: Without dead ends: 2678 [2021-08-12 18:50:41,795 INFO L806 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 [2021-08-12 18:50:41,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2678 states. [2021-08-12 18:50:42,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2678 to 1486. [2021-08-12 18:50:42,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 3.977777777777778) internal successors, (5907), 1485 states have internal predecessors, (5907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:42,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5907 transitions. [2021-08-12 18:50:42,078 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5907 transitions. Word has length 25 [2021-08-12 18:50:42,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:50:42,079 INFO L482 AbstractCegarLoop]: Abstraction has 1486 states and 5907 transitions. [2021-08-12 18:50:42,079 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) [2021-08-12 18:50:42,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5907 transitions. [2021-08-12 18:50:42,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:50:42,081 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:50:42,082 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:50:42,082 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-08-12 18:50:42,082 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]=== [2021-08-12 18:50:42,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:50:42,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1696475705, now seen corresponding path program 82 times [2021-08-12 18:50:42,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:50:42,082 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893611559] [2021-08-12 18:50:42,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:50:42,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:50:42,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:50:42,172 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:50:42,172 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893611559] [2021-08-12 18:50:42,172 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893611559] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:50:42,172 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:50:42,172 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:50:42,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114610731] [2021-08-12 18:50:42,172 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:50:42,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:50:42,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:50:42,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:50:42,173 INFO L87 Difference]: Start difference. First operand 1486 states and 5907 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:44,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:50:44,260 INFO L93 Difference]: Finished difference Result 2862 states and 10606 transitions. [2021-08-12 18:50:44,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:50:44,260 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:50:44,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:50:44,274 INFO L225 Difference]: With dead ends: 2862 [2021-08-12 18:50:44,274 INFO L226 Difference]: Without dead ends: 2662 [2021-08-12 18:50:44,275 INFO L806 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 [2021-08-12 18:50:44,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2662 states. [2021-08-12 18:50:44,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2662 to 1470. [2021-08-12 18:50:44,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 3.982981620149762) internal successors, (5851), 1469 states have internal predecessors, (5851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:44,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5851 transitions. [2021-08-12 18:50:44,554 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5851 transitions. Word has length 25 [2021-08-12 18:50:44,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:50:44,554 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 5851 transitions. [2021-08-12 18:50:44,554 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) [2021-08-12 18:50:44,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5851 transitions. [2021-08-12 18:50:44,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:50:44,557 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:50:44,557 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:50:44,557 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-08-12 18:50:44,557 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]=== [2021-08-12 18:50:44,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:50:44,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1433141019, now seen corresponding path program 83 times [2021-08-12 18:50:44,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:50:44,558 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560963107] [2021-08-12 18:50:44,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:50:44,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:50:44,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:50:44,657 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:50:44,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560963107] [2021-08-12 18:50:44,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560963107] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:50:44,657 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:50:44,657 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:50:44,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569433211] [2021-08-12 18:50:44,657 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:50:44,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:50:44,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:50:44,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:50:44,658 INFO L87 Difference]: Start difference. First operand 1470 states and 5851 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:46,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:50:46,820 INFO L93 Difference]: Finished difference Result 2910 states and 10792 transitions. [2021-08-12 18:50:46,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:50:46,820 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:50:46,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:50:46,836 INFO L225 Difference]: With dead ends: 2910 [2021-08-12 18:50:46,836 INFO L226 Difference]: Without dead ends: 2720 [2021-08-12 18:50:46,837 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 118.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:50:46,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2720 states. [2021-08-12 18:50:47,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2720 to 1498. [2021-08-12 18:50:47,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1497 states have (on average 3.967267869071476) internal successors, (5939), 1497 states have internal predecessors, (5939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:47,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 5939 transitions. [2021-08-12 18:50:47,114 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 5939 transitions. Word has length 25 [2021-08-12 18:50:47,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:50:47,114 INFO L482 AbstractCegarLoop]: Abstraction has 1498 states and 5939 transitions. [2021-08-12 18:50:47,114 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) [2021-08-12 18:50:47,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 5939 transitions. [2021-08-12 18:50:47,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:50:47,117 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:50:47,117 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:50:47,117 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-08-12 18:50:47,117 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]=== [2021-08-12 18:50:47,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:50:47,117 INFO L82 PathProgramCache]: Analyzing trace with hash 40996473, now seen corresponding path program 84 times [2021-08-12 18:50:47,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:50:47,117 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501271677] [2021-08-12 18:50:47,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:50:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:50:47,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:50:47,209 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:50:47,209 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501271677] [2021-08-12 18:50:47,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501271677] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:50:47,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:50:47,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:50:47,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80299308] [2021-08-12 18:50:47,209 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:50:47,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:50:47,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:50:47,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:50:47,213 INFO L87 Difference]: Start difference. First operand 1498 states and 5939 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:49,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:50:49,351 INFO L93 Difference]: Finished difference Result 2904 states and 10747 transitions. [2021-08-12 18:50:49,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:50:49,352 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:50:49,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:50:49,369 INFO L225 Difference]: With dead ends: 2904 [2021-08-12 18:50:49,370 INFO L226 Difference]: Without dead ends: 2684 [2021-08-12 18:50:49,370 INFO L806 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 [2021-08-12 18:50:49,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2684 states. [2021-08-12 18:50:49,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2684 to 1462. [2021-08-12 18:50:49,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1462 states, 1461 states have (on average 3.9883641341546885) internal successors, (5827), 1461 states have internal predecessors, (5827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:49,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 5827 transitions. [2021-08-12 18:50:49,630 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 5827 transitions. Word has length 25 [2021-08-12 18:50:49,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:50:49,630 INFO L482 AbstractCegarLoop]: Abstraction has 1462 states and 5827 transitions. [2021-08-12 18:50:49,631 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) [2021-08-12 18:50:49,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 5827 transitions. [2021-08-12 18:50:49,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:50:49,633 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:50:49,633 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:50:49,633 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-08-12 18:50:49,633 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]=== [2021-08-12 18:50:49,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:50:49,634 INFO L82 PathProgramCache]: Analyzing trace with hash 2092230299, now seen corresponding path program 85 times [2021-08-12 18:50:49,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:50:49,634 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429351093] [2021-08-12 18:50:49,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:50:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:50:49,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:50:49,735 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:50:49,736 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429351093] [2021-08-12 18:50:49,736 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429351093] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:50:49,736 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:50:49,736 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:50:49,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148005627] [2021-08-12 18:50:49,736 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:50:49,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:50:49,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:50:49,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:50:49,736 INFO L87 Difference]: Start difference. First operand 1462 states and 5827 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:51,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:50:51,627 INFO L93 Difference]: Finished difference Result 2840 states and 10541 transitions. [2021-08-12 18:50:51,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:50:51,627 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 [2021-08-12 18:50:51,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:50:51,642 INFO L225 Difference]: With dead ends: 2840 [2021-08-12 18:50:51,642 INFO L226 Difference]: Without dead ends: 2680 [2021-08-12 18:50:51,643 INFO L806 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 [2021-08-12 18:50:51,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2021-08-12 18:50:51,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 1486. [2021-08-12 18:50:51,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 3.9804713804713803) internal successors, (5911), 1485 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) [2021-08-12 18:50:51,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5911 transitions. [2021-08-12 18:50:51,957 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5911 transitions. Word has length 25 [2021-08-12 18:50:51,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:50:51,957 INFO L482 AbstractCegarLoop]: Abstraction has 1486 states and 5911 transitions. [2021-08-12 18:50:51,957 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) [2021-08-12 18:50:51,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5911 transitions. [2021-08-12 18:50:51,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:50:51,960 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:50:51,960 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:50:51,960 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-08-12 18:50:51,960 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]=== [2021-08-12 18:50:51,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:50:51,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1194439013, now seen corresponding path program 86 times [2021-08-12 18:50:51,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:50:51,961 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410843766] [2021-08-12 18:50:51,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:50:51,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:50:52,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:50:52,057 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:50:52,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410843766] [2021-08-12 18:50:52,057 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410843766] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:50:52,057 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:50:52,057 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:50:52,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945547924] [2021-08-12 18:50:52,057 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:50:52,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:50:52,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:50:52,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:50:52,058 INFO L87 Difference]: Start difference. First operand 1486 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) [2021-08-12 18:50:54,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:50:54,132 INFO L93 Difference]: Finished difference Result 2868 states and 10629 transitions. [2021-08-12 18:50:54,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:50:54,133 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:50:54,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:50:54,147 INFO L225 Difference]: With dead ends: 2868 [2021-08-12 18:50:54,147 INFO L226 Difference]: Without dead ends: 2664 [2021-08-12 18:50:54,148 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 110.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:50:54,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2021-08-12 18:50:54,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 1470. [2021-08-12 18:50:54,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 3.9857045609257997) internal successors, (5855), 1469 states have internal predecessors, (5855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:54,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5855 transitions. [2021-08-12 18:50:54,416 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5855 transitions. Word has length 25 [2021-08-12 18:50:54,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:50:54,417 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 5855 transitions. [2021-08-12 18:50:54,417 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:54,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5855 transitions. [2021-08-12 18:50:54,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:50:54,419 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:50:54,419 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:50:54,419 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-08-12 18:50:54,419 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]=== [2021-08-12 18:50:54,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:50:54,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1245433337, now seen corresponding path program 87 times [2021-08-12 18:50:54,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:50:54,420 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616824974] [2021-08-12 18:50:54,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:50:54,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:50:54,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:50:54,509 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:50:54,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616824974] [2021-08-12 18:50:54,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616824974] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:50:54,509 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:50:54,509 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:50:54,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143235635] [2021-08-12 18:50:54,509 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:50:54,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:50:54,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:50:54,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:50:54,509 INFO L87 Difference]: Start difference. First operand 1470 states and 5855 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:56,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:50:56,543 INFO L93 Difference]: Finished difference Result 2836 states and 10521 transitions. [2021-08-12 18:50:56,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:50:56,543 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:50:56,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:50:56,559 INFO L225 Difference]: With dead ends: 2836 [2021-08-12 18:50:56,559 INFO L226 Difference]: Without dead ends: 2676 [2021-08-12 18:50:56,560 INFO L806 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 [2021-08-12 18:50:56,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2676 states. [2021-08-12 18:50:56,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2676 to 1486. [2021-08-12 18:50:56,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 3.975084175084175) internal successors, (5903), 1485 states have internal predecessors, (5903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:56,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5903 transitions. [2021-08-12 18:50:56,851 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5903 transitions. Word has length 25 [2021-08-12 18:50:56,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:50:56,851 INFO L482 AbstractCegarLoop]: Abstraction has 1486 states and 5903 transitions. [2021-08-12 18:50:56,851 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) [2021-08-12 18:50:56,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5903 transitions. [2021-08-12 18:50:56,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:50:56,854 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:50:56,854 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:50:56,854 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-08-12 18:50:56,854 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]=== [2021-08-12 18:50:56,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:50:56,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1215573659, now seen corresponding path program 88 times [2021-08-12 18:50:56,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:50:56,855 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666706581] [2021-08-12 18:50:56,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:50:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:50:56,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:50:56,936 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:50:56,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666706581] [2021-08-12 18:50:56,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666706581] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:50:56,936 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:50:56,937 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:50:56,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822968872] [2021-08-12 18:50:56,937 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:50:56,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:50:56,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:50:56,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:50:56,937 INFO L87 Difference]: Start difference. First operand 1486 states and 5903 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:58,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:50:58,989 INFO L93 Difference]: Finished difference Result 2860 states and 10597 transitions. [2021-08-12 18:50:58,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:50:58,989 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 [2021-08-12 18:50:58,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:50:59,004 INFO L225 Difference]: With dead ends: 2860 [2021-08-12 18:50:59,005 INFO L226 Difference]: Without dead ends: 2660 [2021-08-12 18:50:59,005 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 126.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:50:59,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2021-08-12 18:50:59,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 1470. [2021-08-12 18:50:59,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 3.9802586793737236) internal successors, (5847), 1469 states have internal predecessors, (5847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:50:59,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5847 transitions. [2021-08-12 18:50:59,269 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5847 transitions. Word has length 25 [2021-08-12 18:50:59,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:50:59,269 INFO L482 AbstractCegarLoop]: Abstraction has 1470 states and 5847 transitions. [2021-08-12 18:50:59,269 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) [2021-08-12 18:50:59,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5847 transitions. [2021-08-12 18:50:59,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:50:59,272 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:50:59,272 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:50:59,272 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-08-12 18:50:59,272 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]=== [2021-08-12 18:50:59,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:50:59,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1144871269, now seen corresponding path program 89 times [2021-08-12 18:50:59,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:50:59,272 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094131520] [2021-08-12 18:50:59,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:50:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:50:59,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:50:59,351 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:50:59,351 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094131520] [2021-08-12 18:50:59,351 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094131520] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:50:59,351 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:50:59,351 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:50:59,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330633234] [2021-08-12 18:50:59,352 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:50:59,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:50:59,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:50:59,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:50:59,352 INFO L87 Difference]: Start difference. First operand 1470 states and 5847 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:01,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:51:01,401 INFO L93 Difference]: Finished difference Result 2904 states and 10773 transitions. [2021-08-12 18:51:01,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:51:01,402 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 [2021-08-12 18:51:01,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:51:01,417 INFO L225 Difference]: With dead ends: 2904 [2021-08-12 18:51:01,417 INFO L226 Difference]: Without dead ends: 2716 [2021-08-12 18:51:01,418 INFO L806 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 [2021-08-12 18:51:01,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2716 states. [2021-08-12 18:51:01,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2716 to 1498. [2021-08-12 18:51:01,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1497 states have (on average 3.9645958583834333) internal successors, (5935), 1497 states have internal predecessors, (5935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:01,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 5935 transitions. [2021-08-12 18:51:01,700 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 5935 transitions. Word has length 25 [2021-08-12 18:51:01,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:51:01,701 INFO L482 AbstractCegarLoop]: Abstraction has 1498 states and 5935 transitions. [2021-08-12 18:51:01,701 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) [2021-08-12 18:51:01,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 5935 transitions. [2021-08-12 18:51:01,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:51:01,703 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:51:01,703 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:51:01,703 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-08-12 18:51:01,703 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]=== [2021-08-12 18:51:01,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:51:01,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1106759033, now seen corresponding path program 90 times [2021-08-12 18:51:01,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:51:01,704 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264470800] [2021-08-12 18:51:01,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:51:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:51:01,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:51:01,798 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:51:01,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264470800] [2021-08-12 18:51:01,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264470800] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:51:01,798 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:51:01,798 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:51:01,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11097977] [2021-08-12 18:51:01,798 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:51:01,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:51:01,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:51:01,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:51:01,799 INFO L87 Difference]: Start difference. First operand 1498 states and 5935 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:03,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:51:03,926 INFO L93 Difference]: Finished difference Result 2900 states and 10733 transitions. [2021-08-12 18:51:03,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:51:03,926 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 [2021-08-12 18:51:03,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:51:03,941 INFO L225 Difference]: With dead ends: 2900 [2021-08-12 18:51:03,941 INFO L226 Difference]: Without dead ends: 2680 [2021-08-12 18:51:03,942 INFO L806 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 [2021-08-12 18:51:03,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2021-08-12 18:51:04,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 1462. [2021-08-12 18:51:04,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1462 states, 1461 states have (on average 3.9856262833675564) internal successors, (5823), 1461 states have internal predecessors, (5823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:04,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 5823 transitions. [2021-08-12 18:51:04,210 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 5823 transitions. Word has length 25 [2021-08-12 18:51:04,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:51:04,211 INFO L482 AbstractCegarLoop]: Abstraction has 1462 states and 5823 transitions. [2021-08-12 18:51:04,211 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:04,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 5823 transitions. [2021-08-12 18:51:04,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:51:04,213 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:51:04,213 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:51:04,213 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-08-12 18:51:04,213 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]=== [2021-08-12 18:51:04,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:51:04,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1478632707, now seen corresponding path program 91 times [2021-08-12 18:51:04,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:51:04,214 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179208766] [2021-08-12 18:51:04,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:51:04,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:51:04,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:51:04,303 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:51:04,303 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179208766] [2021-08-12 18:51:04,303 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179208766] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:51:04,303 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:51:04,303 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:51:04,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136767733] [2021-08-12 18:51:04,303 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:51:04,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:51:04,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:51:04,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:51:04,304 INFO L87 Difference]: Start difference. First operand 1462 states and 5823 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:06,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:51:06,467 INFO L93 Difference]: Finished difference Result 2976 states and 11063 transitions. [2021-08-12 18:51:06,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:51:06,467 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 [2021-08-12 18:51:06,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:51:06,484 INFO L225 Difference]: With dead ends: 2976 [2021-08-12 18:51:06,484 INFO L226 Difference]: Without dead ends: 2786 [2021-08-12 18:51:06,485 INFO L806 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 [2021-08-12 18:51:06,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2021-08-12 18:51:06,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 1506. [2021-08-12 18:51:06,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 3.9740863787375416) internal successors, (5981), 1505 states have internal predecessors, (5981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:06,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 5981 transitions. [2021-08-12 18:51:06,773 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 5981 transitions. Word has length 25 [2021-08-12 18:51:06,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:51:06,774 INFO L482 AbstractCegarLoop]: Abstraction has 1506 states and 5981 transitions. [2021-08-12 18:51:06,775 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:06,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 5981 transitions. [2021-08-12 18:51:06,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:51:06,778 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:51:06,778 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:51:06,778 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-08-12 18:51:06,778 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]=== [2021-08-12 18:51:06,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:51:06,779 INFO L82 PathProgramCache]: Analyzing trace with hash 772997595, now seen corresponding path program 92 times [2021-08-12 18:51:06,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:51:06,779 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534876139] [2021-08-12 18:51:06,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:51:06,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:51:06,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:51:06,880 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:51:06,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534876139] [2021-08-12 18:51:06,880 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534876139] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:51:06,880 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:51:06,880 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:51:06,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788436807] [2021-08-12 18:51:06,881 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:51:06,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:51:06,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:51:06,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:51:06,881 INFO L87 Difference]: Start difference. First operand 1506 states and 5981 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:08,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:51:08,992 INFO L93 Difference]: Finished difference Result 2974 states and 11028 transitions. [2021-08-12 18:51:08,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:51:08,992 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:51:08,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:51:09,007 INFO L225 Difference]: With dead ends: 2974 [2021-08-12 18:51:09,007 INFO L226 Difference]: Without dead ends: 2756 [2021-08-12 18:51:09,008 INFO L806 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 [2021-08-12 18:51:09,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2021-08-12 18:51:09,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 1476. [2021-08-12 18:51:09,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1475 states have (on average 3.982372881355932) internal successors, (5874), 1475 states have internal predecessors, (5874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:09,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 5874 transitions. [2021-08-12 18:51:09,299 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 5874 transitions. Word has length 25 [2021-08-12 18:51:09,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:51:09,299 INFO L482 AbstractCegarLoop]: Abstraction has 1476 states and 5874 transitions. [2021-08-12 18:51:09,299 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:09,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 5874 transitions. [2021-08-12 18:51:09,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:51:09,301 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:51:09,301 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:51:09,301 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-08-12 18:51:09,302 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]=== [2021-08-12 18:51:09,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:51:09,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1969537627, now seen corresponding path program 93 times [2021-08-12 18:51:09,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:51:09,302 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233095191] [2021-08-12 18:51:09,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:51:09,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:51:09,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:51:09,382 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:51:09,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233095191] [2021-08-12 18:51:09,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233095191] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:51:09,382 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:51:09,382 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:51:09,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665875877] [2021-08-12 18:51:09,383 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:51:09,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:51:09,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:51:09,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:51:09,383 INFO L87 Difference]: Start difference. First operand 1476 states and 5874 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:11,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:51:11,548 INFO L93 Difference]: Finished difference Result 2970 states and 11030 transitions. [2021-08-12 18:51:11,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:51:11,549 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:51:11,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:51:11,565 INFO L225 Difference]: With dead ends: 2970 [2021-08-12 18:51:11,565 INFO L226 Difference]: Without dead ends: 2780 [2021-08-12 18:51:11,566 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:51:11,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2780 states. [2021-08-12 18:51:11,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2780 to 1504. [2021-08-12 18:51:11,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 1503 states have (on average 3.9667332002661344) internal successors, (5962), 1503 states have internal predecessors, (5962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:11,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 5962 transitions. [2021-08-12 18:51:11,854 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 5962 transitions. Word has length 25 [2021-08-12 18:51:11,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:51:11,854 INFO L482 AbstractCegarLoop]: Abstraction has 1504 states and 5962 transitions. [2021-08-12 18:51:11,854 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:11,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 5962 transitions. [2021-08-12 18:51:11,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:51:11,857 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:51:11,857 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:51:11,857 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-08-12 18:51:11,857 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]=== [2021-08-12 18:51:11,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:51:11,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1132963237, now seen corresponding path program 94 times [2021-08-12 18:51:11,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:51:11,857 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142742750] [2021-08-12 18:51:11,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:51:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:51:11,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:51:11,943 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:51:11,943 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142742750] [2021-08-12 18:51:11,943 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142742750] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:51:11,943 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:51:11,943 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:51:11,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430396918] [2021-08-12 18:51:11,943 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:51:11,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:51:11,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:51:11,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:51:11,944 INFO L87 Difference]: Start difference. First operand 1504 states and 5962 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:14,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:51:14,087 INFO L93 Difference]: Finished difference Result 2964 states and 10985 transitions. [2021-08-12 18:51:14,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:51:14,087 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 [2021-08-12 18:51:14,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:51:14,101 INFO L225 Difference]: With dead ends: 2964 [2021-08-12 18:51:14,102 INFO L226 Difference]: Without dead ends: 2752 [2021-08-12 18:51:14,103 INFO L806 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 [2021-08-12 18:51:14,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2752 states. [2021-08-12 18:51:14,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2752 to 1476. [2021-08-12 18:51:14,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1475 states have (on average 3.9728813559322034) internal successors, (5860), 1475 states have internal predecessors, (5860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:14,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 5860 transitions. [2021-08-12 18:51:14,393 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 5860 transitions. Word has length 25 [2021-08-12 18:51:14,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:51:14,393 INFO L482 AbstractCegarLoop]: Abstraction has 1476 states and 5860 transitions. [2021-08-12 18:51:14,393 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:14,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 5860 transitions. [2021-08-12 18:51:14,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:51:14,396 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:51:14,396 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:51:14,396 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-08-12 18:51:14,396 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]=== [2021-08-12 18:51:14,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:51:14,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1343082055, now seen corresponding path program 95 times [2021-08-12 18:51:14,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:51:14,396 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567697945] [2021-08-12 18:51:14,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:51:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:51:14,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:51:14,476 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:51:14,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567697945] [2021-08-12 18:51:14,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567697945] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:51:14,476 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:51:14,477 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:51:14,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127788476] [2021-08-12 18:51:14,477 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:51:14,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:51:14,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:51:14,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:51:14,477 INFO L87 Difference]: Start difference. First operand 1476 states and 5860 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:16,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:51:16,631 INFO L93 Difference]: Finished difference Result 2966 states and 11006 transitions. [2021-08-12 18:51:16,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:51:16,631 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:51:16,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:51:16,646 INFO L225 Difference]: With dead ends: 2966 [2021-08-12 18:51:16,647 INFO L226 Difference]: Without dead ends: 2778 [2021-08-12 18:51:16,647 INFO L806 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 [2021-08-12 18:51:16,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2778 states. [2021-08-12 18:51:16,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2778 to 1504. [2021-08-12 18:51:16,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 1503 states have (on average 3.9574184963406522) internal successors, (5948), 1503 states have internal predecessors, (5948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:16,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 5948 transitions. [2021-08-12 18:51:16,930 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 5948 transitions. Word has length 25 [2021-08-12 18:51:16,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:51:16,931 INFO L482 AbstractCegarLoop]: Abstraction has 1504 states and 5948 transitions. [2021-08-12 18:51:16,931 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:16,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 5948 transitions. [2021-08-12 18:51:16,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:51:16,933 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:51:16,933 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:51:16,933 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-08-12 18:51:16,933 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]=== [2021-08-12 18:51:16,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:51:16,934 INFO L82 PathProgramCache]: Analyzing trace with hash -262019429, now seen corresponding path program 96 times [2021-08-12 18:51:16,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:51:16,934 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307166299] [2021-08-12 18:51:16,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:51:16,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:51:17,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:51:17,014 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:51:17,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307166299] [2021-08-12 18:51:17,014 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307166299] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:51:17,014 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:51:17,014 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:51:17,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42753198] [2021-08-12 18:51:17,014 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:51:17,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:51:17,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:51:17,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:51:17,015 INFO L87 Difference]: Start difference. First operand 1504 states and 5948 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:19,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:51:19,210 INFO L93 Difference]: Finished difference Result 2962 states and 10966 transitions. [2021-08-12 18:51:19,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:51:19,210 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 [2021-08-12 18:51:19,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:51:19,226 INFO L225 Difference]: With dead ends: 2962 [2021-08-12 18:51:19,226 INFO L226 Difference]: Without dead ends: 2732 [2021-08-12 18:51:19,227 INFO L806 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 [2021-08-12 18:51:19,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2021-08-12 18:51:19,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 1458. [2021-08-12 18:51:19,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 1457 states have (on average 3.9897048730267675) internal successors, (5813), 1457 states have internal predecessors, (5813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:19,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 5813 transitions. [2021-08-12 18:51:19,531 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 5813 transitions. Word has length 25 [2021-08-12 18:51:19,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:51:19,531 INFO L482 AbstractCegarLoop]: Abstraction has 1458 states and 5813 transitions. [2021-08-12 18:51:19,531 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:19,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 5813 transitions. [2021-08-12 18:51:19,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:51:19,534 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:51:19,534 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:51:19,534 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-08-12 18:51:19,534 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]=== [2021-08-12 18:51:19,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:51:19,534 INFO L82 PathProgramCache]: Analyzing trace with hash 847937503, now seen corresponding path program 97 times [2021-08-12 18:51:19,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:51:19,534 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262439188] [2021-08-12 18:51:19,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:51:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:51:19,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:51:19,624 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:51:19,624 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262439188] [2021-08-12 18:51:19,624 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262439188] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:51:19,624 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:51:19,624 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:51:19,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650710671] [2021-08-12 18:51:19,624 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:51:19,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:51:19,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:51:19,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:51:19,624 INFO L87 Difference]: Start difference. First operand 1458 states and 5813 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:21,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:51:21,972 INFO L93 Difference]: Finished difference Result 3230 states and 12056 transitions. [2021-08-12 18:51:21,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:51:21,977 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 [2021-08-12 18:51:21,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:51:21,994 INFO L225 Difference]: With dead ends: 3230 [2021-08-12 18:51:21,994 INFO L226 Difference]: Without dead ends: 3040 [2021-08-12 18:51:21,996 INFO L806 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 [2021-08-12 18:51:22,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3040 states. [2021-08-12 18:51:22,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3040 to 1525. [2021-08-12 18:51:22,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 1524 states have (on average 3.9783464566929134) internal successors, (6063), 1524 states have internal predecessors, (6063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:22,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 6063 transitions. [2021-08-12 18:51:22,299 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 6063 transitions. Word has length 25 [2021-08-12 18:51:22,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:51:22,299 INFO L482 AbstractCegarLoop]: Abstraction has 1525 states and 6063 transitions. [2021-08-12 18:51:22,299 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:22,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 6063 transitions. [2021-08-12 18:51:22,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:51:22,302 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:51:22,302 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:51:22,302 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-08-12 18:51:22,302 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]=== [2021-08-12 18:51:22,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:51:22,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1195399491, now seen corresponding path program 98 times [2021-08-12 18:51:22,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:51:22,302 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236112889] [2021-08-12 18:51:22,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:51:22,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:51:22,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:51:22,399 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:51:22,399 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236112889] [2021-08-12 18:51:22,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236112889] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:51:22,400 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:51:22,400 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:51:22,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297358513] [2021-08-12 18:51:22,400 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:51:22,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:51:22,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:51:22,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:51:22,400 INFO L87 Difference]: Start difference. First operand 1525 states and 6063 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:24,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:51:24,773 INFO L93 Difference]: Finished difference Result 3228 states and 12021 transitions. [2021-08-12 18:51:24,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:51:24,773 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:51:24,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:51:24,791 INFO L225 Difference]: With dead ends: 3228 [2021-08-12 18:51:24,791 INFO L226 Difference]: Without dead ends: 3010 [2021-08-12 18:51:24,792 INFO L806 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 [2021-08-12 18:51:24,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3010 states. [2021-08-12 18:51:25,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 1495. [2021-08-12 18:51:25,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1495 states, 1494 states have (on average 3.9866131191432395) internal successors, (5956), 1494 states have internal predecessors, (5956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:25,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1495 states to 1495 states and 5956 transitions. [2021-08-12 18:51:25,085 INFO L78 Accepts]: Start accepts. Automaton has 1495 states and 5956 transitions. Word has length 25 [2021-08-12 18:51:25,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:51:25,085 INFO L482 AbstractCegarLoop]: Abstraction has 1495 states and 5956 transitions. [2021-08-12 18:51:25,085 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) [2021-08-12 18:51:25,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1495 states and 5956 transitions. [2021-08-12 18:51:25,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:51:25,088 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:51:25,088 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:51:25,088 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-08-12 18:51:25,088 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]=== [2021-08-12 18:51:25,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:51:25,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1140541, now seen corresponding path program 99 times [2021-08-12 18:51:25,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:51:25,088 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066207371] [2021-08-12 18:51:25,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:51:25,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:51:25,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:51:25,171 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:51:25,171 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066207371] [2021-08-12 18:51:25,171 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066207371] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:51:25,171 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:51:25,171 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:51:25,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024729586] [2021-08-12 18:51:25,171 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:51:25,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:51:25,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:51:25,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:51:25,171 INFO L87 Difference]: Start difference. First operand 1495 states and 5956 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:27,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:51:27,528 INFO L93 Difference]: Finished difference Result 3224 states and 12023 transitions. [2021-08-12 18:51:27,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:51:27,528 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:51:27,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:51:27,545 INFO L225 Difference]: With dead ends: 3224 [2021-08-12 18:51:27,545 INFO L226 Difference]: Without dead ends: 3034 [2021-08-12 18:51:27,546 INFO L806 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 [2021-08-12 18:51:27,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3034 states. [2021-08-12 18:51:27,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3034 to 1523. [2021-08-12 18:51:27,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1522 states have (on average 3.971090670170828) internal successors, (6044), 1522 states have internal predecessors, (6044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:27,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 6044 transitions. [2021-08-12 18:51:27,849 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 6044 transitions. Word has length 25 [2021-08-12 18:51:27,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:51:27,849 INFO L482 AbstractCegarLoop]: Abstraction has 1523 states and 6044 transitions. [2021-08-12 18:51:27,849 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:27,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 6044 transitions. [2021-08-12 18:51:27,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:51:27,852 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:51:27,852 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:51:27,852 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-08-12 18:51:27,852 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]=== [2021-08-12 18:51:27,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:51:27,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1193606973, now seen corresponding path program 100 times [2021-08-12 18:51:27,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:51:27,852 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208502922] [2021-08-12 18:51:27,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:51:27,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:51:27,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:51:27,937 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:51:27,937 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208502922] [2021-08-12 18:51:27,937 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208502922] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:51:27,938 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:51:27,938 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:51:27,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009179232] [2021-08-12 18:51:27,938 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:51:27,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:51:27,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:51:27,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:51:27,938 INFO L87 Difference]: Start difference. First operand 1523 states and 6044 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:30,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:51:30,287 INFO L93 Difference]: Finished difference Result 3218 states and 11978 transitions. [2021-08-12 18:51:30,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:51:30,287 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 [2021-08-12 18:51:30,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:51:30,305 INFO L225 Difference]: With dead ends: 3218 [2021-08-12 18:51:30,305 INFO L226 Difference]: Without dead ends: 3006 [2021-08-12 18:51:30,306 INFO L806 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 [2021-08-12 18:51:30,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3006 states. [2021-08-12 18:51:30,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3006 to 1495. [2021-08-12 18:51:30,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1495 states, 1494 states have (on average 3.9772423025435075) internal successors, (5942), 1494 states have internal predecessors, (5942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:30,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1495 states to 1495 states and 5942 transitions. [2021-08-12 18:51:30,617 INFO L78 Accepts]: Start accepts. Automaton has 1495 states and 5942 transitions. Word has length 25 [2021-08-12 18:51:30,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:51:30,617 INFO L482 AbstractCegarLoop]: Abstraction has 1495 states and 5942 transitions. [2021-08-12 18:51:30,617 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) [2021-08-12 18:51:30,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1495 states and 5942 transitions. [2021-08-12 18:51:30,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:51:30,619 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:51:30,619 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:51:30,619 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-08-12 18:51:30,619 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]=== [2021-08-12 18:51:30,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:51:30,620 INFO L82 PathProgramCache]: Analyzing trace with hash 983488155, now seen corresponding path program 101 times [2021-08-12 18:51:30,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:51:30,620 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93605151] [2021-08-12 18:51:30,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:51:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:51:30,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:51:30,707 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:51:30,707 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93605151] [2021-08-12 18:51:30,707 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93605151] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:51:30,707 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:51:30,707 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:51:30,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443859294] [2021-08-12 18:51:30,708 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:51:30,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:51:30,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:51:30,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:51:30,708 INFO L87 Difference]: Start difference. First operand 1495 states and 5942 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:33,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:51:33,094 INFO L93 Difference]: Finished difference Result 3220 states and 11999 transitions. [2021-08-12 18:51:33,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:51:33,094 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 [2021-08-12 18:51:33,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:51:33,110 INFO L225 Difference]: With dead ends: 3220 [2021-08-12 18:51:33,110 INFO L226 Difference]: Without dead ends: 3032 [2021-08-12 18:51:33,111 INFO L806 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 [2021-08-12 18:51:33,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2021-08-12 18:51:33,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 1523. [2021-08-12 18:51:33,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1522 states have (on average 3.961892247043364) internal successors, (6030), 1522 states have internal predecessors, (6030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:33,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 6030 transitions. [2021-08-12 18:51:33,419 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 6030 transitions. Word has length 25 [2021-08-12 18:51:33,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:51:33,419 INFO L482 AbstractCegarLoop]: Abstraction has 1523 states and 6030 transitions. [2021-08-12 18:51:33,419 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) [2021-08-12 18:51:33,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 6030 transitions. [2021-08-12 18:51:33,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:51:33,422 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:51:33,422 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:51:33,422 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-08-12 18:51:33,422 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]=== [2021-08-12 18:51:33,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:51:33,422 INFO L82 PathProgramCache]: Analyzing trace with hash 2064550781, now seen corresponding path program 102 times [2021-08-12 18:51:33,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:51:33,422 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506891921] [2021-08-12 18:51:33,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:51:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:51:33,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:51:33,510 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:51:33,510 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506891921] [2021-08-12 18:51:33,510 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506891921] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:51:33,510 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:51:33,510 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:51:33,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419877949] [2021-08-12 18:51:33,510 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:51:33,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:51:33,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:51:33,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:51:33,511 INFO L87 Difference]: Start difference. First operand 1523 states and 6030 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:35,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:51:35,968 INFO L93 Difference]: Finished difference Result 3216 states and 11959 transitions. [2021-08-12 18:51:35,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:51:35,969 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 [2021-08-12 18:51:35,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:51:35,986 INFO L225 Difference]: With dead ends: 3216 [2021-08-12 18:51:35,987 INFO L226 Difference]: Without dead ends: 2990 [2021-08-12 18:51:35,987 INFO L806 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 [2021-08-12 18:51:36,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2021-08-12 18:51:36,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 1481. [2021-08-12 18:51:36,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1481 states, 1480 states have (on average 3.985135135135135) internal successors, (5898), 1480 states have internal predecessors, (5898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:36,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 5898 transitions. [2021-08-12 18:51:36,291 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 5898 transitions. Word has length 25 [2021-08-12 18:51:36,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:51:36,291 INFO L482 AbstractCegarLoop]: Abstraction has 1481 states and 5898 transitions. [2021-08-12 18:51:36,291 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) [2021-08-12 18:51:36,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 5898 transitions. [2021-08-12 18:51:36,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:51:36,294 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:51:36,294 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:51:36,294 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-08-12 18:51:36,294 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]=== [2021-08-12 18:51:36,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:51:36,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1125368515, now seen corresponding path program 103 times [2021-08-12 18:51:36,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:51:36,295 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277638591] [2021-08-12 18:51:36,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:51:36,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:51:36,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:51:36,389 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:51:36,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277638591] [2021-08-12 18:51:36,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277638591] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:51:36,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:51:36,390 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:51:36,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361501399] [2021-08-12 18:51:36,390 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:51:36,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:51:36,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:51:36,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:51:36,390 INFO L87 Difference]: Start difference. First operand 1481 states and 5898 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:39,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:51:39,015 INFO L93 Difference]: Finished difference Result 3347 states and 12461 transitions. [2021-08-12 18:51:39,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:51:39,016 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:51:39,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:51:39,034 INFO L225 Difference]: With dead ends: 3347 [2021-08-12 18:51:39,034 INFO L226 Difference]: Without dead ends: 3157 [2021-08-12 18:51:39,035 INFO L806 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 [2021-08-12 18:51:39,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2021-08-12 18:51:39,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 1550. [2021-08-12 18:51:39,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1550 states, 1549 states have (on average 3.9664299548095547) internal successors, (6144), 1549 states have internal predecessors, (6144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:39,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1550 states to 1550 states and 6144 transitions. [2021-08-12 18:51:39,349 INFO L78 Accepts]: Start accepts. Automaton has 1550 states and 6144 transitions. Word has length 25 [2021-08-12 18:51:39,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:51:39,350 INFO L482 AbstractCegarLoop]: Abstraction has 1550 states and 6144 transitions. [2021-08-12 18:51:39,350 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) [2021-08-12 18:51:39,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1550 states and 6144 transitions. [2021-08-12 18:51:39,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:51:39,352 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:51:39,352 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:51:39,353 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-08-12 18:51:39,353 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]=== [2021-08-12 18:51:39,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:51:39,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1126261787, now seen corresponding path program 104 times [2021-08-12 18:51:39,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:51:39,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140891404] [2021-08-12 18:51:39,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:51:39,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:51:39,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:51:39,435 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:51:39,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140891404] [2021-08-12 18:51:39,436 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140891404] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:51:39,436 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:51:39,436 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:51:39,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265429797] [2021-08-12 18:51:39,436 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:51:39,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:51:39,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:51:39,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:51:39,436 INFO L87 Difference]: Start difference. First operand 1550 states and 6144 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:42,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:51:42,043 INFO L93 Difference]: Finished difference Result 3345 states and 12426 transitions. [2021-08-12 18:51:42,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:51:42,043 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 [2021-08-12 18:51:42,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:51:42,060 INFO L225 Difference]: With dead ends: 3345 [2021-08-12 18:51:42,061 INFO L226 Difference]: Without dead ends: 3127 [2021-08-12 18:51:42,061 INFO L806 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 [2021-08-12 18:51:42,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3127 states. [2021-08-12 18:51:42,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3127 to 1520. [2021-08-12 18:51:42,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1520 states, 1519 states have (on average 3.9736668861092825) internal successors, (6036), 1519 states have internal predecessors, (6036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:42,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 6036 transitions. [2021-08-12 18:51:42,372 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 6036 transitions. Word has length 25 [2021-08-12 18:51:42,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:51:42,373 INFO L482 AbstractCegarLoop]: Abstraction has 1520 states and 6036 transitions. [2021-08-12 18:51:42,373 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) [2021-08-12 18:51:42,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 6036 transitions. [2021-08-12 18:51:42,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:51:42,375 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:51:42,375 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:51:42,375 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-08-12 18:51:42,375 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]=== [2021-08-12 18:51:42,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:51:42,376 INFO L82 PathProgramCache]: Analyzing trace with hash -699628227, now seen corresponding path program 105 times [2021-08-12 18:51:42,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:51:42,376 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631307355] [2021-08-12 18:51:42,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:51:42,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:51:42,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:51:42,457 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:51:42,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631307355] [2021-08-12 18:51:42,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631307355] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:51:42,457 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:51:42,457 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:51:42,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596871677] [2021-08-12 18:51:42,457 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:51:42,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:51:42,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:51:42,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:51:42,458 INFO L87 Difference]: Start difference. First operand 1520 states and 6036 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:45,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:51:45,107 INFO L93 Difference]: Finished difference Result 3415 states and 12680 transitions. [2021-08-12 18:51:45,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:51:45,108 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 [2021-08-12 18:51:45,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:51:45,125 INFO L225 Difference]: With dead ends: 3415 [2021-08-12 18:51:45,125 INFO L226 Difference]: Without dead ends: 3225 [2021-08-12 18:51:45,126 INFO L806 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 [2021-08-12 18:51:45,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3225 states. [2021-08-12 18:51:45,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3225 to 1583. [2021-08-12 18:51:45,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1582 states have (on average 3.946270543615676) internal successors, (6243), 1582 states have internal predecessors, (6243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:45,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 6243 transitions. [2021-08-12 18:51:45,453 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 6243 transitions. Word has length 25 [2021-08-12 18:51:45,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:51:45,453 INFO L482 AbstractCegarLoop]: Abstraction has 1583 states and 6243 transitions. [2021-08-12 18:51:45,454 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:45,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 6243 transitions. [2021-08-12 18:51:45,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:51:45,457 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:51:45,457 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:51:45,457 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-08-12 18:51:45,457 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]=== [2021-08-12 18:51:45,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:51:45,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1255416515, now seen corresponding path program 106 times [2021-08-12 18:51:45,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:51:45,458 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500676708] [2021-08-12 18:51:45,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:51:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:51:45,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:51:45,542 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:51:45,542 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500676708] [2021-08-12 18:51:45,542 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500676708] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:51:45,542 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:51:45,542 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:51:45,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014517352] [2021-08-12 18:51:45,542 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:51:45,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:51:45,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:51:45,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:51:45,543 INFO L87 Difference]: Start difference. First operand 1583 states and 6243 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:48,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:51:48,217 INFO L93 Difference]: Finished difference Result 3448 states and 12763 transitions. [2021-08-12 18:51:48,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:51:48,217 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:51:48,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:51:48,234 INFO L225 Difference]: With dead ends: 3448 [2021-08-12 18:51:48,235 INFO L226 Difference]: Without dead ends: 3162 [2021-08-12 18:51:48,235 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 86.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:51:48,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3162 states. [2021-08-12 18:51:48,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3162 to 1520. [2021-08-12 18:51:48,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1520 states, 1519 states have (on average 3.953258722843976) internal successors, (6005), 1519 states have internal predecessors, (6005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:48,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 6005 transitions. [2021-08-12 18:51:48,548 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 6005 transitions. Word has length 25 [2021-08-12 18:51:48,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:51:48,548 INFO L482 AbstractCegarLoop]: Abstraction has 1520 states and 6005 transitions. [2021-08-12 18:51:48,548 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:48,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 6005 transitions. [2021-08-12 18:51:48,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:51:48,550 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:51:48,551 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:51:48,551 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-08-12 18:51:48,551 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]=== [2021-08-12 18:51:48,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:51:48,551 INFO L82 PathProgramCache]: Analyzing trace with hash 282719387, now seen corresponding path program 107 times [2021-08-12 18:51:48,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:51:48,551 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174559366] [2021-08-12 18:51:48,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:51:48,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:51:48,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:51:48,647 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:51:48,648 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174559366] [2021-08-12 18:51:48,648 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174559366] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:51:48,648 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:51:48,648 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:51:48,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329628149] [2021-08-12 18:51:48,648 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:51:48,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:51:48,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:51:48,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:51:48,649 INFO L87 Difference]: Start difference. First operand 1520 states and 6005 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:51,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:51:51,401 INFO L93 Difference]: Finished difference Result 3394 states and 12588 transitions. [2021-08-12 18:51:51,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:51:51,402 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 [2021-08-12 18:51:51,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:51:51,418 INFO L225 Difference]: With dead ends: 3394 [2021-08-12 18:51:51,418 INFO L226 Difference]: Without dead ends: 3206 [2021-08-12 18:51:51,419 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:51:51,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3206 states. [2021-08-12 18:51:51,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3206 to 1566. [2021-08-12 18:51:51,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1566 states, 1565 states have (on average 3.9373801916932907) internal successors, (6162), 1565 states have internal predecessors, (6162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:51,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 6162 transitions. [2021-08-12 18:51:51,757 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 6162 transitions. Word has length 25 [2021-08-12 18:51:51,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:51:51,758 INFO L482 AbstractCegarLoop]: Abstraction has 1566 states and 6162 transitions. [2021-08-12 18:51:51,758 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:51,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 6162 transitions. [2021-08-12 18:51:51,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:51:51,761 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:51:51,761 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:51:51,761 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-08-12 18:51:51,761 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]=== [2021-08-12 18:51:51,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:51:51,761 INFO L82 PathProgramCache]: Analyzing trace with hash -2074670211, now seen corresponding path program 108 times [2021-08-12 18:51:51,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:51:51,762 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757775951] [2021-08-12 18:51:51,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:51:51,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:51:51,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:51:51,854 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:51:51,854 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757775951] [2021-08-12 18:51:51,854 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757775951] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:51:51,854 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:51:51,854 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:51:51,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523123913] [2021-08-12 18:51:51,854 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:51:51,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:51:51,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:51:51,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:51:51,855 INFO L87 Difference]: Start difference. First operand 1566 states and 6162 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:54,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:51:54,616 INFO L93 Difference]: Finished difference Result 3429 states and 12677 transitions. [2021-08-12 18:51:54,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:51:54,616 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:51:54,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:51:54,632 INFO L225 Difference]: With dead ends: 3429 [2021-08-12 18:51:54,632 INFO L226 Difference]: Without dead ends: 3121 [2021-08-12 18:51:54,633 INFO L806 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 [2021-08-12 18:51:54,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3121 states. [2021-08-12 18:51:54,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3121 to 1481. [2021-08-12 18:51:54,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1481 states, 1480 states have (on average 3.972297297297297) internal successors, (5879), 1480 states have internal predecessors, (5879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:54,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 5879 transitions. [2021-08-12 18:51:54,954 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 5879 transitions. Word has length 25 [2021-08-12 18:51:54,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:51:54,954 INFO L482 AbstractCegarLoop]: Abstraction has 1481 states and 5879 transitions. [2021-08-12 18:51:54,954 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) [2021-08-12 18:51:54,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 5879 transitions. [2021-08-12 18:51:54,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:51:54,957 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:51:54,957 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:51:54,957 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-08-12 18:51:54,957 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]=== [2021-08-12 18:51:54,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:51:54,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1982116581, now seen corresponding path program 109 times [2021-08-12 18:51:54,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:51:54,958 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694901939] [2021-08-12 18:51:54,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:51:54,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:51:55,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:51:55,052 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:51:55,052 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694901939] [2021-08-12 18:51:55,052 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694901939] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:51:55,052 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:51:55,052 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:51:55,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746626266] [2021-08-12 18:51:55,052 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:51:55,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:51:55,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:51:55,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:51:55,052 INFO L87 Difference]: Start difference. First operand 1481 states and 5879 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:57,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:51:57,755 INFO L93 Difference]: Finished difference Result 3324 states and 12373 transitions. [2021-08-12 18:51:57,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:51:57,755 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 [2021-08-12 18:51:57,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:51:57,773 INFO L225 Difference]: With dead ends: 3324 [2021-08-12 18:51:57,774 INFO L226 Difference]: Without dead ends: 3134 [2021-08-12 18:51:57,775 INFO L806 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 [2021-08-12 18:51:57,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3134 states. [2021-08-12 18:51:58,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3134 to 1539. [2021-08-12 18:51:58,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1539 states, 1538 states have (on average 3.963589076723017) internal successors, (6096), 1538 states have internal predecessors, (6096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:58,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1539 states to 1539 states and 6096 transitions. [2021-08-12 18:51:58,112 INFO L78 Accepts]: Start accepts. Automaton has 1539 states and 6096 transitions. Word has length 25 [2021-08-12 18:51:58,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:51:58,112 INFO L482 AbstractCegarLoop]: Abstraction has 1539 states and 6096 transitions. [2021-08-12 18:51:58,112 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:51:58,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1539 states and 6096 transitions. [2021-08-12 18:51:58,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:51:58,115 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:51:58,115 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:51:58,115 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-08-12 18:51:58,115 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]=== [2021-08-12 18:51:58,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:51:58,115 INFO L82 PathProgramCache]: Analyzing trace with hash -789650149, now seen corresponding path program 110 times [2021-08-12 18:51:58,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:51:58,115 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925151690] [2021-08-12 18:51:58,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:51:58,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:51:58,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:51:58,209 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:51:58,209 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925151690] [2021-08-12 18:51:58,210 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925151690] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:51:58,210 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:51:58,210 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:51:58,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596054155] [2021-08-12 18:51:58,210 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:51:58,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:51:58,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:51:58,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:51:58,210 INFO L87 Difference]: Start difference. First operand 1539 states and 6096 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:00,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:52:00,911 INFO L93 Difference]: Finished difference Result 3318 states and 12328 transitions. [2021-08-12 18:52:00,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:52:00,911 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:52:00,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:52:00,928 INFO L225 Difference]: With dead ends: 3318 [2021-08-12 18:52:00,929 INFO L226 Difference]: Without dead ends: 3106 [2021-08-12 18:52:00,929 INFO L806 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 [2021-08-12 18:52:00,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3106 states. [2021-08-12 18:52:01,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3106 to 1511. [2021-08-12 18:52:01,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1511 states, 1510 states have (on average 3.9695364238410598) internal successors, (5994), 1510 states have internal predecessors, (5994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:01,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 5994 transitions. [2021-08-12 18:52:01,258 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 5994 transitions. Word has length 25 [2021-08-12 18:52:01,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:52:01,259 INFO L482 AbstractCegarLoop]: Abstraction has 1511 states and 5994 transitions. [2021-08-12 18:52:01,259 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) [2021-08-12 18:52:01,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 5994 transitions. [2021-08-12 18:52:01,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:52:01,261 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:52:01,261 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:52:01,261 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-08-12 18:52:01,261 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]=== [2021-08-12 18:52:01,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:52:01,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1002269693, now seen corresponding path program 111 times [2021-08-12 18:52:01,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:52:01,262 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172910231] [2021-08-12 18:52:01,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:52:01,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:52:01,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:52:01,360 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:52:01,360 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172910231] [2021-08-12 18:52:01,360 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172910231] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:52:01,360 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:52:01,360 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:52:01,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103449088] [2021-08-12 18:52:01,360 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:52:01,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:52:01,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:52:01,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:52:01,361 INFO L87 Difference]: Start difference. First operand 1511 states and 5994 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:04,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:52:04,106 INFO L93 Difference]: Finished difference Result 3398 states and 12612 transitions. [2021-08-12 18:52:04,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:52:04,106 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:52:04,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:52:04,125 INFO L225 Difference]: With dead ends: 3398 [2021-08-12 18:52:04,125 INFO L226 Difference]: Without dead ends: 3208 [2021-08-12 18:52:04,126 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 117.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:52:04,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3208 states. [2021-08-12 18:52:04,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3208 to 1574. [2021-08-12 18:52:04,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1574 states, 1573 states have (on average 3.9421487603305785) internal successors, (6201), 1573 states have internal predecessors, (6201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:04,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 6201 transitions. [2021-08-12 18:52:04,482 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 6201 transitions. Word has length 25 [2021-08-12 18:52:04,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:52:04,482 INFO L482 AbstractCegarLoop]: Abstraction has 1574 states and 6201 transitions. [2021-08-12 18:52:04,482 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) [2021-08-12 18:52:04,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 6201 transitions. [2021-08-12 18:52:04,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:52:04,485 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:52:04,485 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:52:04,485 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-08-12 18:52:04,485 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]=== [2021-08-12 18:52:04,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:52:04,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1016489243, now seen corresponding path program 112 times [2021-08-12 18:52:04,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:52:04,486 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414507741] [2021-08-12 18:52:04,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:52:04,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:52:04,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:52:04,580 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:52:04,580 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414507741] [2021-08-12 18:52:04,580 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414507741] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:52:04,580 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:52:04,580 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:52:04,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97332460] [2021-08-12 18:52:04,581 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:52:04,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:52:04,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:52:04,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:52:04,581 INFO L87 Difference]: Start difference. First operand 1574 states and 6201 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:07,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:52:07,495 INFO L93 Difference]: Finished difference Result 3431 states and 12695 transitions. [2021-08-12 18:52:07,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:52:07,495 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:52:07,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:52:07,512 INFO L225 Difference]: With dead ends: 3431 [2021-08-12 18:52:07,512 INFO L226 Difference]: Without dead ends: 3145 [2021-08-12 18:52:07,513 INFO L806 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 [2021-08-12 18:52:07,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3145 states. [2021-08-12 18:52:07,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3145 to 1511. [2021-08-12 18:52:07,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1511 states, 1510 states have (on average 3.9496688741721853) internal successors, (5964), 1510 states have internal predecessors, (5964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:07,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 5964 transitions. [2021-08-12 18:52:07,963 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 5964 transitions. Word has length 25 [2021-08-12 18:52:07,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:52:07,963 INFO L482 AbstractCegarLoop]: Abstraction has 1511 states and 5964 transitions. [2021-08-12 18:52:07,963 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) [2021-08-12 18:52:07,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 5964 transitions. [2021-08-12 18:52:07,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:52:07,966 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:52:07,966 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:52:07,966 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-08-12 18:52:07,966 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]=== [2021-08-12 18:52:07,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:52:07,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1968717083, now seen corresponding path program 113 times [2021-08-12 18:52:07,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:52:07,967 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609676056] [2021-08-12 18:52:07,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:52:07,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:52:08,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:52:08,075 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:52:08,075 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609676056] [2021-08-12 18:52:08,075 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609676056] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:52:08,075 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:52:08,076 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:52:08,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536721855] [2021-08-12 18:52:08,076 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:52:08,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:52:08,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:52:08,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:52:08,076 INFO L87 Difference]: Start difference. First operand 1511 states and 5964 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:10,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:52:10,923 INFO L93 Difference]: Finished difference Result 3367 states and 12490 transitions. [2021-08-12 18:52:10,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:52:10,923 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:52:10,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:52:10,940 INFO L225 Difference]: With dead ends: 3367 [2021-08-12 18:52:10,941 INFO L226 Difference]: Without dead ends: 3183 [2021-08-12 18:52:10,941 INFO L806 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 [2021-08-12 18:52:10,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3183 states. [2021-08-12 18:52:11,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3183 to 1555. [2021-08-12 18:52:11,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1555 states, 1554 states have (on average 3.9356499356499355) internal successors, (6116), 1554 states have internal predecessors, (6116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:11,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 6116 transitions. [2021-08-12 18:52:11,295 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 6116 transitions. Word has length 25 [2021-08-12 18:52:11,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:52:11,295 INFO L482 AbstractCegarLoop]: Abstraction has 1555 states and 6116 transitions. [2021-08-12 18:52:11,295 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) [2021-08-12 18:52:11,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 6116 transitions. [2021-08-12 18:52:11,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:52:11,298 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:52:11,298 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:52:11,298 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-08-12 18:52:11,298 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]=== [2021-08-12 18:52:11,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:52:11,299 INFO L82 PathProgramCache]: Analyzing trace with hash 899198077, now seen corresponding path program 114 times [2021-08-12 18:52:11,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:52:11,299 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731083750] [2021-08-12 18:52:11,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:52:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:52:11,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:52:11,403 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:52:11,404 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731083750] [2021-08-12 18:52:11,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731083750] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:52:11,404 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:52:11,404 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:52:11,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717590505] [2021-08-12 18:52:11,404 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:52:11,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:52:11,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:52:11,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:52:11,405 INFO L87 Difference]: Start difference. First operand 1555 states and 6116 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:14,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:52:14,319 INFO L93 Difference]: Finished difference Result 3406 states and 12593 transitions. [2021-08-12 18:52:14,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:52:14,319 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:52:14,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:52:14,337 INFO L225 Difference]: With dead ends: 3406 [2021-08-12 18:52:14,337 INFO L226 Difference]: Without dead ends: 3109 [2021-08-12 18:52:14,338 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 105.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:52:14,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3109 states. [2021-08-12 18:52:14,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3109 to 1481. [2021-08-12 18:52:14,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1481 states, 1480 states have (on average 3.962162162162162) internal successors, (5864), 1480 states have internal predecessors, (5864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:14,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 5864 transitions. [2021-08-12 18:52:14,701 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 5864 transitions. Word has length 25 [2021-08-12 18:52:14,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:52:14,701 INFO L482 AbstractCegarLoop]: Abstraction has 1481 states and 5864 transitions. [2021-08-12 18:52:14,702 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) [2021-08-12 18:52:14,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 5864 transitions. [2021-08-12 18:52:14,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:52:14,704 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:52:14,704 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:52:14,704 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-08-12 18:52:14,704 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]=== [2021-08-12 18:52:14,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:52:14,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1009720071, now seen corresponding path program 115 times [2021-08-12 18:52:14,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:52:14,704 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553640279] [2021-08-12 18:52:14,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:52:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:52:14,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:52:14,787 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:52:14,787 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553640279] [2021-08-12 18:52:14,787 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553640279] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:52:14,787 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:52:14,788 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:52:14,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607621536] [2021-08-12 18:52:14,788 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:52:14,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:52:14,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:52:14,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:52:14,788 INFO L87 Difference]: Start difference. First operand 1481 states and 5864 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:17,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:52:17,597 INFO L93 Difference]: Finished difference Result 3293 states and 12264 transitions. [2021-08-12 18:52:17,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:52:17,597 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:52:17,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:52:17,614 INFO L225 Difference]: With dead ends: 3293 [2021-08-12 18:52:17,614 INFO L226 Difference]: Without dead ends: 3105 [2021-08-12 18:52:17,615 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 101.1ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:52:17,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3105 states. [2021-08-12 18:52:17,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3105 to 1531. [2021-08-12 18:52:17,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1531 states, 1530 states have (on average 3.9562091503267975) internal successors, (6053), 1530 states have internal predecessors, (6053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:17,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 6053 transitions. [2021-08-12 18:52:17,960 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 6053 transitions. Word has length 25 [2021-08-12 18:52:17,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:52:17,960 INFO L482 AbstractCegarLoop]: Abstraction has 1531 states and 6053 transitions. [2021-08-12 18:52:17,960 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:17,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 6053 transitions. [2021-08-12 18:52:17,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:52:17,963 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:52:17,963 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:52:17,963 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-08-12 18:52:17,963 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]=== [2021-08-12 18:52:17,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:52:17,963 INFO L82 PathProgramCache]: Analyzing trace with hash 71342555, now seen corresponding path program 116 times [2021-08-12 18:52:17,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:52:17,963 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141668575] [2021-08-12 18:52:17,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:52:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:52:18,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:52:18,058 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:52:18,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141668575] [2021-08-12 18:52:18,058 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141668575] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:52:18,058 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:52:18,058 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:52:18,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476561264] [2021-08-12 18:52:18,058 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:52:18,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:52:18,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:52:18,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:52:18,059 INFO L87 Difference]: Start difference. First operand 1531 states and 6053 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:20,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:52:20,892 INFO L93 Difference]: Finished difference Result 3289 states and 12224 transitions. [2021-08-12 18:52:20,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:52:20,892 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 [2021-08-12 18:52:20,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:52:20,910 INFO L225 Difference]: With dead ends: 3289 [2021-08-12 18:52:20,910 INFO L226 Difference]: Without dead ends: 3077 [2021-08-12 18:52:20,911 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 108.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:52:20,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3077 states. [2021-08-12 18:52:21,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3077 to 1503. [2021-08-12 18:52:21,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1503 states, 1502 states have (on average 3.9620505992010653) internal successors, (5951), 1502 states have internal predecessors, (5951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:21,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1503 states to 1503 states and 5951 transitions. [2021-08-12 18:52:21,255 INFO L78 Accepts]: Start accepts. Automaton has 1503 states and 5951 transitions. Word has length 25 [2021-08-12 18:52:21,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:52:21,255 INFO L482 AbstractCegarLoop]: Abstraction has 1503 states and 5951 transitions. [2021-08-12 18:52:21,256 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:21,256 INFO L276 IsEmpty]: Start isEmpty. Operand 1503 states and 5951 transitions. [2021-08-12 18:52:21,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:52:21,258 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:52:21,258 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:52:21,258 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-08-12 18:52:21,258 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]=== [2021-08-12 18:52:21,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:52:21,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1974666203, now seen corresponding path program 117 times [2021-08-12 18:52:21,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:52:21,259 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684041163] [2021-08-12 18:52:21,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:52:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:52:21,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:52:21,344 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:52:21,344 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684041163] [2021-08-12 18:52:21,344 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684041163] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:52:21,344 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:52:21,344 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:52:21,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837715568] [2021-08-12 18:52:21,344 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:52:21,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:52:21,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:52:21,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:52:21,345 INFO L87 Difference]: Start difference. First operand 1503 states and 5951 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:24,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:52:24,263 INFO L93 Difference]: Finished difference Result 3350 states and 12452 transitions. [2021-08-12 18:52:24,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:52:24,263 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 [2021-08-12 18:52:24,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:52:24,282 INFO L225 Difference]: With dead ends: 3350 [2021-08-12 18:52:24,282 INFO L226 Difference]: Without dead ends: 3162 [2021-08-12 18:52:24,283 INFO L806 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 [2021-08-12 18:52:24,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3162 states. [2021-08-12 18:52:24,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3162 to 1549. [2021-08-12 18:52:24,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1549 states, 1548 states have (on average 3.945736434108527) internal successors, (6108), 1548 states have internal predecessors, (6108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:24,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1549 states to 1549 states and 6108 transitions. [2021-08-12 18:52:24,645 INFO L78 Accepts]: Start accepts. Automaton has 1549 states and 6108 transitions. Word has length 25 [2021-08-12 18:52:24,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:52:24,645 INFO L482 AbstractCegarLoop]: Abstraction has 1549 states and 6108 transitions. [2021-08-12 18:52:24,645 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) [2021-08-12 18:52:24,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1549 states and 6108 transitions. [2021-08-12 18:52:24,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:52:24,648 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:52:24,648 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:52:24,648 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-08-12 18:52:24,648 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]=== [2021-08-12 18:52:24,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:52:24,649 INFO L82 PathProgramCache]: Analyzing trace with hash 187284443, now seen corresponding path program 118 times [2021-08-12 18:52:24,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:52:24,649 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558570358] [2021-08-12 18:52:24,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:52:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:52:24,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:52:24,741 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:52:24,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558570358] [2021-08-12 18:52:24,742 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558570358] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:52:24,742 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:52:24,742 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:52:24,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118007846] [2021-08-12 18:52:24,742 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:52:24,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:52:24,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:52:24,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:52:24,742 INFO L87 Difference]: Start difference. First operand 1549 states and 6108 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:27,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:52:27,712 INFO L93 Difference]: Finished difference Result 3385 states and 12541 transitions. [2021-08-12 18:52:27,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:52:27,712 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:52:27,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:52:27,731 INFO L225 Difference]: With dead ends: 3385 [2021-08-12 18:52:27,731 INFO L226 Difference]: Without dead ends: 3116 [2021-08-12 18:52:27,732 INFO L806 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 [2021-08-12 18:52:27,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3116 states. [2021-08-12 18:52:28,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3116 to 1503. [2021-08-12 18:52:28,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1503 states, 1502 states have (on average 3.947403462050599) internal successors, (5929), 1502 states have internal predecessors, (5929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:28,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1503 states to 1503 states and 5929 transitions. [2021-08-12 18:52:28,085 INFO L78 Accepts]: Start accepts. Automaton has 1503 states and 5929 transitions. Word has length 25 [2021-08-12 18:52:28,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:52:28,086 INFO L482 AbstractCegarLoop]: Abstraction has 1503 states and 5929 transitions. [2021-08-12 18:52:28,086 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) [2021-08-12 18:52:28,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1503 states and 5929 transitions. [2021-08-12 18:52:28,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:52:28,088 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:52:28,088 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:52:28,088 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-08-12 18:52:28,088 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]=== [2021-08-12 18:52:28,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:52:28,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1932296131, now seen corresponding path program 119 times [2021-08-12 18:52:28,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:52:28,089 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807140437] [2021-08-12 18:52:28,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:52:28,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:52:28,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:52:28,181 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:52:28,181 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807140437] [2021-08-12 18:52:28,181 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807140437] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:52:28,181 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:52:28,181 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:52:28,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610520552] [2021-08-12 18:52:28,181 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:52:28,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:52:28,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:52:28,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:52:28,182 INFO L87 Difference]: Start difference. First operand 1503 states and 5929 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:31,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:52:31,171 INFO L93 Difference]: Finished difference Result 3340 states and 12399 transitions. [2021-08-12 18:52:31,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:52:31,172 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 [2021-08-12 18:52:31,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:52:31,189 INFO L225 Difference]: With dead ends: 3340 [2021-08-12 18:52:31,189 INFO L226 Difference]: Without dead ends: 3156 [2021-08-12 18:52:31,190 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:52:31,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3156 states. [2021-08-12 18:52:31,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3156 to 1547. [2021-08-12 18:52:31,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1547 states, 1546 states have (on average 3.9333764553686934) internal successors, (6081), 1546 states have internal predecessors, (6081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:31,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1547 states to 1547 states and 6081 transitions. [2021-08-12 18:52:31,543 INFO L78 Accepts]: Start accepts. Automaton has 1547 states and 6081 transitions. Word has length 25 [2021-08-12 18:52:31,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:52:31,544 INFO L482 AbstractCegarLoop]: Abstraction has 1547 states and 6081 transitions. [2021-08-12 18:52:31,544 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:31,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1547 states and 6081 transitions. [2021-08-12 18:52:31,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:52:31,547 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:52:31,547 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:52:31,547 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-08-12 18:52:31,547 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]=== [2021-08-12 18:52:31,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:52:31,547 INFO L82 PathProgramCache]: Analyzing trace with hash -727646949, now seen corresponding path program 120 times [2021-08-12 18:52:31,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:52:31,548 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858642347] [2021-08-12 18:52:31,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:52:31,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:52:31,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:52:31,644 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:52:31,644 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858642347] [2021-08-12 18:52:31,644 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858642347] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:52:31,645 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:52:31,645 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:52:31,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001842190] [2021-08-12 18:52:31,645 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:52:31,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:52:31,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:52:31,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:52:31,645 INFO L87 Difference]: Start difference. First operand 1547 states and 6081 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:34,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:52:34,632 INFO L93 Difference]: Finished difference Result 3379 states and 12502 transitions. [2021-08-12 18:52:34,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:52:34,632 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 [2021-08-12 18:52:34,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:52:34,650 INFO L225 Difference]: With dead ends: 3379 [2021-08-12 18:52:34,650 INFO L226 Difference]: Without dead ends: 3057 [2021-08-12 18:52:34,651 INFO L806 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 [2021-08-12 18:52:34,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3057 states. [2021-08-12 18:52:35,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3057 to 1448. [2021-08-12 18:52:35,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 3.9979267449896336) internal successors, (5785), 1447 states have internal predecessors, (5785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:35,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5785 transitions. [2021-08-12 18:52:35,023 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5785 transitions. Word has length 25 [2021-08-12 18:52:35,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:52:35,024 INFO L482 AbstractCegarLoop]: Abstraction has 1448 states and 5785 transitions. [2021-08-12 18:52:35,024 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) [2021-08-12 18:52:35,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5785 transitions. [2021-08-12 18:52:35,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:52:35,026 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:52:35,026 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:52:35,026 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-08-12 18:52:35,026 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]=== [2021-08-12 18:52:35,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:52:35,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1096271389, now seen corresponding path program 121 times [2021-08-12 18:52:35,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:52:35,026 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92040675] [2021-08-12 18:52:35,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:52:35,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:52:35,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:52:35,156 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:52:35,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92040675] [2021-08-12 18:52:35,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92040675] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:52:35,156 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:52:35,157 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:52:35,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549078346] [2021-08-12 18:52:35,157 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:52:35,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:52:35,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:52:35,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:52:35,157 INFO L87 Difference]: Start difference. First operand 1448 states and 5785 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:38,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:52:38,345 INFO L93 Difference]: Finished difference Result 3142 states and 11644 transitions. [2021-08-12 18:52:38,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:52:38,346 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 [2021-08-12 18:52:38,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:52:38,363 INFO L225 Difference]: With dead ends: 3142 [2021-08-12 18:52:38,363 INFO L226 Difference]: Without dead ends: 2982 [2021-08-12 18:52:38,364 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 126.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:52:38,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2982 states. [2021-08-12 18:52:38,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2982 to 1504. [2021-08-12 18:52:38,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 1503 states have (on average 3.9900199600798403) internal successors, (5997), 1503 states have internal predecessors, (5997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:38,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 5997 transitions. [2021-08-12 18:52:38,729 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 5997 transitions. Word has length 25 [2021-08-12 18:52:38,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:52:38,729 INFO L482 AbstractCegarLoop]: Abstraction has 1504 states and 5997 transitions. [2021-08-12 18:52:38,729 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:38,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 5997 transitions. [2021-08-12 18:52:38,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:52:38,732 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:52:38,732 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:52:38,732 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-08-12 18:52:38,732 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]=== [2021-08-12 18:52:38,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:52:38,732 INFO L82 PathProgramCache]: Analyzing trace with hash 87973405, now seen corresponding path program 122 times [2021-08-12 18:52:38,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:52:38,732 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031527603] [2021-08-12 18:52:38,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:52:38,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:52:38,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:52:38,836 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:52:38,836 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031527603] [2021-08-12 18:52:38,836 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031527603] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:52:38,836 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:52:38,836 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:52:38,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911891445] [2021-08-12 18:52:38,836 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:52:38,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:52:38,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:52:38,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:52:38,837 INFO L87 Difference]: Start difference. First operand 1504 states and 5997 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:41,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:52:41,921 INFO L93 Difference]: Finished difference Result 3205 states and 11851 transitions. [2021-08-12 18:52:41,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:52:41,922 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 [2021-08-12 18:52:41,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:52:41,941 INFO L225 Difference]: With dead ends: 3205 [2021-08-12 18:52:41,941 INFO L226 Difference]: Without dead ends: 2950 [2021-08-12 18:52:41,942 INFO L806 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 [2021-08-12 18:52:41,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2021-08-12 18:52:42,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1472. [2021-08-12 18:52:42,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1471 states have (on average 3.989802855200544) internal successors, (5869), 1471 states have internal predecessors, (5869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:42,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5869 transitions. [2021-08-12 18:52:42,321 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5869 transitions. Word has length 25 [2021-08-12 18:52:42,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:52:42,322 INFO L482 AbstractCegarLoop]: Abstraction has 1472 states and 5869 transitions. [2021-08-12 18:52:42,322 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:42,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5869 transitions. [2021-08-12 18:52:42,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:52:42,324 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:52:42,324 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:52:42,325 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-08-12 18:52:42,325 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]=== [2021-08-12 18:52:42,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:52:42,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1134886073, now seen corresponding path program 123 times [2021-08-12 18:52:42,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:52:42,325 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381293645] [2021-08-12 18:52:42,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:52:42,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:52:42,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:52:42,445 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:52:42,446 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381293645] [2021-08-12 18:52:42,447 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381293645] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:52:42,448 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:52:42,449 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:52:42,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112025945] [2021-08-12 18:52:42,450 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:52:42,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:52:42,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:52:42,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:52:42,452 INFO L87 Difference]: Start difference. First operand 1472 states and 5869 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:45,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:52:45,461 INFO L93 Difference]: Finished difference Result 3093 states and 11450 transitions. [2021-08-12 18:52:45,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:52:45,462 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 [2021-08-12 18:52:45,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:52:45,480 INFO L225 Difference]: With dead ends: 3093 [2021-08-12 18:52:45,481 INFO L226 Difference]: Without dead ends: 2933 [2021-08-12 18:52:45,481 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 116.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:52:45,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2021-08-12 18:52:45,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 1488. [2021-08-12 18:52:45,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1487 states have (on average 3.9791526563550774) internal successors, (5917), 1487 states have internal predecessors, (5917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:45,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 5917 transitions. [2021-08-12 18:52:45,848 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 5917 transitions. Word has length 25 [2021-08-12 18:52:45,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:52:45,849 INFO L482 AbstractCegarLoop]: Abstraction has 1488 states and 5917 transitions. [2021-08-12 18:52:45,849 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:45,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 5917 transitions. [2021-08-12 18:52:45,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:52:45,851 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:52:45,851 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:52:45,852 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-08-12 18:52:45,852 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]=== [2021-08-12 18:52:45,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:52:45,852 INFO L82 PathProgramCache]: Analyzing trace with hash -455048677, now seen corresponding path program 124 times [2021-08-12 18:52:45,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:52:45,852 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675036548] [2021-08-12 18:52:45,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:52:45,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:52:45,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:52:45,956 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:52:45,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675036548] [2021-08-12 18:52:45,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675036548] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:52:45,956 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:52:45,956 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:52:45,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929686364] [2021-08-12 18:52:45,957 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:52:45,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:52:45,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:52:45,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:52:45,957 INFO L87 Difference]: Start difference. First operand 1488 states and 5917 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:48,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:52:48,970 INFO L93 Difference]: Finished difference Result 3123 states and 11543 transitions. [2021-08-12 18:52:48,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:52:48,970 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:52:48,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:52:48,989 INFO L225 Difference]: With dead ends: 3123 [2021-08-12 18:52:48,989 INFO L226 Difference]: Without dead ends: 2917 [2021-08-12 18:52:48,990 INFO L806 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 [2021-08-12 18:52:49,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2021-08-12 18:52:49,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 1472. [2021-08-12 18:52:49,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1471 states have (on average 3.9843643779741673) internal successors, (5861), 1471 states have internal predecessors, (5861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:49,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5861 transitions. [2021-08-12 18:52:49,369 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5861 transitions. Word has length 25 [2021-08-12 18:52:49,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:52:49,369 INFO L482 AbstractCegarLoop]: Abstraction has 1472 states and 5861 transitions. [2021-08-12 18:52:49,369 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:49,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5861 transitions. [2021-08-12 18:52:49,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:52:49,371 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:52:49,371 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:52:49,372 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-08-12 18:52:49,372 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]=== [2021-08-12 18:52:49,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:52:49,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1093212163, now seen corresponding path program 125 times [2021-08-12 18:52:49,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:52:49,372 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156431330] [2021-08-12 18:52:49,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:52:49,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:52:49,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:52:49,464 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:52:49,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156431330] [2021-08-12 18:52:49,464 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156431330] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:52:49,464 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:52:49,464 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:52:49,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087838955] [2021-08-12 18:52:49,464 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:52:49,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:52:49,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:52:49,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:52:49,464 INFO L87 Difference]: Start difference. First operand 1472 states and 5861 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:52,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:52:52,745 INFO L93 Difference]: Finished difference Result 3233 states and 11948 transitions. [2021-08-12 18:52:52,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:52:52,745 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 [2021-08-12 18:52:52,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:52:52,762 INFO L225 Difference]: With dead ends: 3233 [2021-08-12 18:52:52,763 INFO L226 Difference]: Without dead ends: 3043 [2021-08-12 18:52:52,763 INFO L806 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 [2021-08-12 18:52:52,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3043 states. [2021-08-12 18:52:53,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3043 to 1535. [2021-08-12 18:52:53,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1535 states, 1534 states have (on average 3.955671447196871) internal successors, (6068), 1534 states have internal predecessors, (6068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:53,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 6068 transitions. [2021-08-12 18:52:53,165 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 6068 transitions. Word has length 25 [2021-08-12 18:52:53,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:52:53,165 INFO L482 AbstractCegarLoop]: Abstraction has 1535 states and 6068 transitions. [2021-08-12 18:52:53,165 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:53,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 6068 transitions. [2021-08-12 18:52:53,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:52:53,168 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:52:53,168 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:52:53,168 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-08-12 18:52:53,168 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]=== [2021-08-12 18:52:53,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:52:53,168 INFO L82 PathProgramCache]: Analyzing trace with hash -795159205, now seen corresponding path program 126 times [2021-08-12 18:52:53,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:52:53,168 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135749683] [2021-08-12 18:52:53,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:52:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:52:53,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:52:53,266 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:52:53,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135749683] [2021-08-12 18:52:53,266 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135749683] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:52:53,266 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:52:53,266 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:52:53,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579246022] [2021-08-12 18:52:53,267 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:52:53,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:52:53,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:52:53,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:52:53,267 INFO L87 Difference]: Start difference. First operand 1535 states and 6068 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:56,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:52:56,458 INFO L93 Difference]: Finished difference Result 3266 states and 12031 transitions. [2021-08-12 18:52:56,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:52:56,458 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:52:56,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:52:56,477 INFO L225 Difference]: With dead ends: 3266 [2021-08-12 18:52:56,477 INFO L226 Difference]: Without dead ends: 2956 [2021-08-12 18:52:56,478 INFO L806 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 [2021-08-12 18:52:56,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2021-08-12 18:52:56,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1448. [2021-08-12 18:52:56,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 3.9896337249481686) internal successors, (5773), 1447 states have internal predecessors, (5773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:56,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5773 transitions. [2021-08-12 18:52:56,869 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5773 transitions. Word has length 25 [2021-08-12 18:52:56,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:52:56,869 INFO L482 AbstractCegarLoop]: Abstraction has 1448 states and 5773 transitions. [2021-08-12 18:52:56,869 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:52:56,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5773 transitions. [2021-08-12 18:52:56,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:52:56,871 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:52:56,871 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:52:56,871 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-08-12 18:52:56,871 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]=== [2021-08-12 18:52:56,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:52:56,872 INFO L82 PathProgramCache]: Analyzing trace with hash 693784637, now seen corresponding path program 127 times [2021-08-12 18:52:56,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:52:56,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315207665] [2021-08-12 18:52:56,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:52:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:52:56,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:52:56,981 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:52:56,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315207665] [2021-08-12 18:52:56,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315207665] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:52:56,982 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:52:56,982 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:52:56,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138312773] [2021-08-12 18:52:56,982 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:52:56,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:52:56,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:52:56,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:52:56,982 INFO L87 Difference]: Start difference. First operand 1448 states and 5773 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:53:00,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:53:00,076 INFO L93 Difference]: Finished difference Result 3115 states and 11548 transitions. [2021-08-12 18:53:00,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:53:00,077 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 [2021-08-12 18:53:00,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:53:00,094 INFO L225 Difference]: With dead ends: 3115 [2021-08-12 18:53:00,094 INFO L226 Difference]: Without dead ends: 2955 [2021-08-12 18:53:00,095 INFO L806 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 [2021-08-12 18:53:00,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2021-08-12 18:53:00,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 1496. [2021-08-12 18:53:00,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 1495 states have (on average 3.9846153846153847) internal successors, (5957), 1495 states have internal predecessors, (5957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:53:00,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 5957 transitions. [2021-08-12 18:53:00,487 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 5957 transitions. Word has length 25 [2021-08-12 18:53:00,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:53:00,488 INFO L482 AbstractCegarLoop]: Abstraction has 1496 states and 5957 transitions. [2021-08-12 18:53:00,488 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) [2021-08-12 18:53:00,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 5957 transitions. [2021-08-12 18:53:00,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:53:00,491 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:53:00,491 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:53:00,491 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-08-12 18:53:00,491 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]=== [2021-08-12 18:53:00,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:53:00,491 INFO L82 PathProgramCache]: Analyzing trace with hash -314513347, now seen corresponding path program 128 times [2021-08-12 18:53:00,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:53:00,491 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512290446] [2021-08-12 18:53:00,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:53:00,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:53:00,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:53:00,596 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:53:00,596 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512290446] [2021-08-12 18:53:00,596 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512290446] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:53:00,596 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:53:00,597 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:53:00,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158768187] [2021-08-12 18:53:00,597 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:53:00,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:53:00,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:53:00,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:53:00,597 INFO L87 Difference]: Start difference. First operand 1496 states and 5957 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:53:03,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:53:03,751 INFO L93 Difference]: Finished difference Result 3178 states and 11755 transitions. [2021-08-12 18:53:03,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:53:03,751 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 [2021-08-12 18:53:03,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:53:03,769 INFO L225 Difference]: With dead ends: 3178 [2021-08-12 18:53:03,769 INFO L226 Difference]: Without dead ends: 2923 [2021-08-12 18:53:03,769 INFO L806 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 [2021-08-12 18:53:03,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2021-08-12 18:53:04,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 1464. [2021-08-12 18:53:04,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1463 states have (on average 3.9842788790157213) internal successors, (5829), 1463 states have internal predecessors, (5829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:53:04,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 5829 transitions. [2021-08-12 18:53:04,156 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 5829 transitions. Word has length 25 [2021-08-12 18:53:04,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:53:04,156 INFO L482 AbstractCegarLoop]: Abstraction has 1464 states and 5829 transitions. [2021-08-12 18:53:04,156 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:53:04,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 5829 transitions. [2021-08-12 18:53:04,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:53:04,158 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:53:04,158 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:53:04,158 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-08-12 18:53:04,158 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]=== [2021-08-12 18:53:04,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:53:04,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1682818143, now seen corresponding path program 129 times [2021-08-12 18:53:04,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:53:04,159 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284229951] [2021-08-12 18:53:04,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:53:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:53:04,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:53:04,285 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:53:04,285 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284229951] [2021-08-12 18:53:04,285 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284229951] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:53:04,285 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:53:04,285 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:53:04,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338374575] [2021-08-12 18:53:04,285 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:53:04,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:53:04,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:53:04,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:53:04,285 INFO L87 Difference]: Start difference. First operand 1464 states and 5829 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:53:07,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:53:07,430 INFO L93 Difference]: Finished difference Result 3064 states and 11349 transitions. [2021-08-12 18:53:07,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:53:07,431 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 [2021-08-12 18:53:07,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:53:07,450 INFO L225 Difference]: With dead ends: 3064 [2021-08-12 18:53:07,450 INFO L226 Difference]: Without dead ends: 2904 [2021-08-12 18:53:07,451 INFO L806 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 [2021-08-12 18:53:07,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2021-08-12 18:53:07,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 1480. [2021-08-12 18:53:07,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1480 states, 1479 states have (on average 3.973630831643002) internal successors, (5877), 1479 states have internal predecessors, (5877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:53:07,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1480 states to 1480 states and 5877 transitions. [2021-08-12 18:53:07,836 INFO L78 Accepts]: Start accepts. Automaton has 1480 states and 5877 transitions. Word has length 25 [2021-08-12 18:53:07,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:53:07,836 INFO L482 AbstractCegarLoop]: Abstraction has 1480 states and 5877 transitions. [2021-08-12 18:53:07,836 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:53:07,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1480 states and 5877 transitions. [2021-08-12 18:53:07,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:53:07,839 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:53:07,839 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:53:07,839 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-08-12 18:53:07,839 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]=== [2021-08-12 18:53:07,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:53:07,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1603851169, now seen corresponding path program 130 times [2021-08-12 18:53:07,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:53:07,839 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811250052] [2021-08-12 18:53:07,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:53:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:53:07,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:53:07,940 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:53:07,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811250052] [2021-08-12 18:53:07,940 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811250052] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:53:07,940 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:53:07,940 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:53:07,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141963749] [2021-08-12 18:53:07,941 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:53:07,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:53:07,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:53:07,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:53:07,941 INFO L87 Difference]: Start difference. First operand 1480 states and 5877 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:53:11,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:53:11,137 INFO L93 Difference]: Finished difference Result 3092 states and 11437 transitions. [2021-08-12 18:53:11,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:53:11,137 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 [2021-08-12 18:53:11,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:53:11,156 INFO L225 Difference]: With dead ends: 3092 [2021-08-12 18:53:11,156 INFO L226 Difference]: Without dead ends: 2888 [2021-08-12 18:53:11,157 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 120.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:53:11,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2021-08-12 18:53:11,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 1464. [2021-08-12 18:53:11,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1463 states have (on average 3.9788106630211892) internal successors, (5821), 1463 states have internal predecessors, (5821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:53:11,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 5821 transitions. [2021-08-12 18:53:11,540 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 5821 transitions. Word has length 25 [2021-08-12 18:53:11,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:53:11,540 INFO L482 AbstractCegarLoop]: Abstraction has 1464 states and 5821 transitions. [2021-08-12 18:53:11,540 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) [2021-08-12 18:53:11,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 5821 transitions. [2021-08-12 18:53:11,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:53:11,543 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:53:11,543 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:53:11,543 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-08-12 18:53:11,543 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]=== [2021-08-12 18:53:11,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:53:11,543 INFO L82 PathProgramCache]: Analyzing trace with hash 84395103, now seen corresponding path program 131 times [2021-08-12 18:53:11,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:53:11,543 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862778714] [2021-08-12 18:53:11,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:53:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:53:11,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:53:11,634 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:53:11,634 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862778714] [2021-08-12 18:53:11,635 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862778714] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:53:11,635 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:53:11,635 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:53:11,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766503990] [2021-08-12 18:53:11,635 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:53:11,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:53:11,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:53:11,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:53:11,635 INFO L87 Difference]: Start difference. First operand 1464 states and 5821 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:53:14,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:53:14,883 INFO L93 Difference]: Finished difference Result 3185 states and 11791 transitions. [2021-08-12 18:53:14,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:53:14,884 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:53:14,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:53:14,902 INFO L225 Difference]: With dead ends: 3185 [2021-08-12 18:53:14,902 INFO L226 Difference]: Without dead ends: 2997 [2021-08-12 18:53:14,903 INFO L806 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 [2021-08-12 18:53:14,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2997 states. [2021-08-12 18:53:15,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2997 to 1510. [2021-08-12 18:53:15,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1510 states, 1509 states have (on average 3.9615639496355204) internal successors, (5978), 1509 states have internal predecessors, (5978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:53:15,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1510 states to 1510 states and 5978 transitions. [2021-08-12 18:53:15,298 INFO L78 Accepts]: Start accepts. Automaton has 1510 states and 5978 transitions. Word has length 25 [2021-08-12 18:53:15,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:53:15,298 INFO L482 AbstractCegarLoop]: Abstraction has 1510 states and 5978 transitions. [2021-08-12 18:53:15,298 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) [2021-08-12 18:53:15,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1510 states and 5978 transitions. [2021-08-12 18:53:15,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:53:15,301 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:53:15,301 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:53:15,301 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-08-12 18:53:15,301 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]=== [2021-08-12 18:53:15,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:53:15,301 INFO L82 PathProgramCache]: Analyzing trace with hash -268744387, now seen corresponding path program 132 times [2021-08-12 18:53:15,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:53:15,301 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41114243] [2021-08-12 18:53:15,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:53:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:53:15,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:53:15,431 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:53:15,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41114243] [2021-08-12 18:53:15,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41114243] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:53:15,431 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:53:15,431 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:53:15,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541690130] [2021-08-12 18:53:15,431 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:53:15,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:53:15,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:53:15,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:53:15,432 INFO L87 Difference]: Start difference. First operand 1510 states and 5978 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:53:18,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:53:18,789 INFO L93 Difference]: Finished difference Result 3220 states and 11880 transitions. [2021-08-12 18:53:18,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:53:18,790 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:53:18,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:53:18,809 INFO L225 Difference]: With dead ends: 3220 [2021-08-12 18:53:18,809 INFO L226 Difference]: Without dead ends: 2935 [2021-08-12 18:53:18,810 INFO L806 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 [2021-08-12 18:53:18,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2021-08-12 18:53:19,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 1448. [2021-08-12 18:53:19,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 3.984105044920525) internal successors, (5765), 1447 states have internal predecessors, (5765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:53:19,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5765 transitions. [2021-08-12 18:53:19,198 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5765 transitions. Word has length 25 [2021-08-12 18:53:19,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:53:19,198 INFO L482 AbstractCegarLoop]: Abstraction has 1448 states and 5765 transitions. [2021-08-12 18:53:19,198 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:53:19,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5765 transitions. [2021-08-12 18:53:19,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:53:19,201 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:53:19,201 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:53:19,201 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-08-12 18:53:19,201 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]=== [2021-08-12 18:53:19,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:53:19,201 INFO L82 PathProgramCache]: Analyzing trace with hash -944238823, now seen corresponding path program 133 times [2021-08-12 18:53:19,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:53:19,201 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201459500] [2021-08-12 18:53:19,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:53:19,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:53:19,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:53:19,326 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:53:19,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201459500] [2021-08-12 18:53:19,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201459500] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:53:19,327 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:53:19,327 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:53:19,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458047482] [2021-08-12 18:53:19,327 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:53:19,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:53:19,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:53:19,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:53:19,327 INFO L87 Difference]: Start difference. First operand 1448 states and 5765 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:53:22,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:53:22,605 INFO L93 Difference]: Finished difference Result 2993 states and 11084 transitions. [2021-08-12 18:53:22,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:53:22,605 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:53:22,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:53:22,623 INFO L225 Difference]: With dead ends: 2993 [2021-08-12 18:53:22,623 INFO L226 Difference]: Without dead ends: 2833 [2021-08-12 18:53:22,624 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 118.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:53:22,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2833 states. [2021-08-12 18:53:23,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2833 to 1472. [2021-08-12 18:53:23,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1471 states have (on average 3.976206662134602) internal successors, (5849), 1471 states have internal predecessors, (5849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:53:23,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5849 transitions. [2021-08-12 18:53:23,029 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5849 transitions. Word has length 25 [2021-08-12 18:53:23,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:53:23,029 INFO L482 AbstractCegarLoop]: Abstraction has 1472 states and 5849 transitions. [2021-08-12 18:53:23,029 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) [2021-08-12 18:53:23,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5849 transitions. [2021-08-12 18:53:23,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:53:23,032 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:53:23,032 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:53:23,032 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-08-12 18:53:23,032 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]=== [2021-08-12 18:53:23,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:53:23,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1760793723, now seen corresponding path program 134 times [2021-08-12 18:53:23,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:53:23,032 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158816735] [2021-08-12 18:53:23,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:53:23,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:53:23,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:53:23,133 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:53:23,133 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158816735] [2021-08-12 18:53:23,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158816735] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:53:23,133 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:53:23,133 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:53:23,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90893736] [2021-08-12 18:53:23,133 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:53:23,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:53:23,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:53:23,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:53:23,134 INFO L87 Difference]: Start difference. First operand 1472 states and 5849 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:53:26,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:53:26,353 INFO L93 Difference]: Finished difference Result 3023 states and 11177 transitions. [2021-08-12 18:53:26,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:53:26,353 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:53:26,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:53:26,371 INFO L225 Difference]: With dead ends: 3023 [2021-08-12 18:53:26,371 INFO L226 Difference]: Without dead ends: 2817 [2021-08-12 18:53:26,372 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:53:26,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2021-08-12 18:53:26,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 1456. [2021-08-12 18:53:26,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1455 states have (on average 3.9814432989690722) internal successors, (5793), 1455 states have internal predecessors, (5793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:53:26,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 5793 transitions. [2021-08-12 18:53:26,759 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 5793 transitions. Word has length 25 [2021-08-12 18:53:26,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:53:26,760 INFO L482 AbstractCegarLoop]: Abstraction has 1456 states and 5793 transitions. [2021-08-12 18:53:26,760 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:53:26,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 5793 transitions. [2021-08-12 18:53:26,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:53:26,762 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:53:26,762 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:53:26,762 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-08-12 18:53:26,762 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]=== [2021-08-12 18:53:26,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:53:26,762 INFO L82 PathProgramCache]: Analyzing trace with hash 136823803, now seen corresponding path program 135 times [2021-08-12 18:53:26,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:53:26,763 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920224386] [2021-08-12 18:53:26,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:53:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:53:26,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:53:26,871 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:53:26,871 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920224386] [2021-08-12 18:53:26,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920224386] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:53:26,871 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:53:26,871 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:53:26,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158798551] [2021-08-12 18:53:26,871 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:53:26,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:53:26,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:53:26,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:53:26,872 INFO L87 Difference]: Start difference. First operand 1456 states and 5793 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:53:30,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:53:30,059 INFO L93 Difference]: Finished difference Result 2991 states and 11071 transitions. [2021-08-12 18:53:30,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:53:30,059 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 [2021-08-12 18:53:30,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:53:30,078 INFO L225 Difference]: With dead ends: 2991 [2021-08-12 18:53:30,078 INFO L226 Difference]: Without dead ends: 2831 [2021-08-12 18:53:30,078 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 111.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:53:30,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2831 states. [2021-08-12 18:53:30,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2831 to 1472. [2021-08-12 18:53:30,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1471 states have (on average 3.9707681849082257) internal successors, (5841), 1471 states have internal predecessors, (5841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:53:30,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5841 transitions. [2021-08-12 18:53:30,476 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5841 transitions. Word has length 25 [2021-08-12 18:53:30,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:53:30,477 INFO L482 AbstractCegarLoop]: Abstraction has 1472 states and 5841 transitions. [2021-08-12 18:53:30,477 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) [2021-08-12 18:53:30,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5841 transitions. [2021-08-12 18:53:30,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:53:30,479 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:53:30,479 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:53:30,479 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-08-12 18:53:30,479 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]=== [2021-08-12 18:53:30,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:53:30,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1145121787, now seen corresponding path program 136 times [2021-08-12 18:53:30,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:53:30,480 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97141862] [2021-08-12 18:53:30,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:53:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:53:30,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:53:30,583 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:53:30,583 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97141862] [2021-08-12 18:53:30,583 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97141862] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:53:30,583 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:53:30,583 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:53:30,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909885001] [2021-08-12 18:53:30,583 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:53:30,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:53:30,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:53:30,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:53:30,583 INFO L87 Difference]: Start difference. First operand 1472 states and 5841 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:53:33,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:53:33,847 INFO L93 Difference]: Finished difference Result 3019 states and 11159 transitions. [2021-08-12 18:53:33,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:53:33,848 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 [2021-08-12 18:53:33,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:53:33,867 INFO L225 Difference]: With dead ends: 3019 [2021-08-12 18:53:33,867 INFO L226 Difference]: Without dead ends: 2815 [2021-08-12 18:53:33,868 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 120.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:53:33,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2815 states. [2021-08-12 18:53:34,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2815 to 1456. [2021-08-12 18:53:34,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1455 states have (on average 3.9759450171821307) internal successors, (5785), 1455 states have internal predecessors, (5785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:53:34,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 5785 transitions. [2021-08-12 18:53:34,292 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 5785 transitions. Word has length 25 [2021-08-12 18:53:34,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:53:34,292 INFO L482 AbstractCegarLoop]: Abstraction has 1456 states and 5785 transitions. [2021-08-12 18:53:34,292 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:53:34,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 5785 transitions. [2021-08-12 18:53:34,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:53:34,294 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:53:34,294 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:53:34,295 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-08-12 18:53:34,295 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]=== [2021-08-12 18:53:34,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:53:34,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1553985757, now seen corresponding path program 137 times [2021-08-12 18:53:34,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:53:34,295 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616650897] [2021-08-12 18:53:34,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:53:34,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:53:34,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:53:34,404 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:53:34,404 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616650897] [2021-08-12 18:53:34,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616650897] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:53:34,405 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:53:34,405 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:53:34,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226767963] [2021-08-12 18:53:34,405 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:53:34,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:53:34,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:53:34,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:53:34,405 INFO L87 Difference]: Start difference. First operand 1456 states and 5785 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:53:37,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:53:37,727 INFO L93 Difference]: Finished difference Result 3065 states and 11340 transitions. [2021-08-12 18:53:37,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:53:37,727 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:53:37,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:53:37,746 INFO L225 Difference]: With dead ends: 3065 [2021-08-12 18:53:37,747 INFO L226 Difference]: Without dead ends: 2875 [2021-08-12 18:53:37,747 INFO L806 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 [2021-08-12 18:53:37,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2875 states. [2021-08-12 18:53:38,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2875 to 1486. [2021-08-12 18:53:38,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 3.958249158249158) internal successors, (5878), 1485 states have internal predecessors, (5878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:53:38,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5878 transitions. [2021-08-12 18:53:38,165 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5878 transitions. Word has length 25 [2021-08-12 18:53:38,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:53:38,166 INFO L482 AbstractCegarLoop]: Abstraction has 1486 states and 5878 transitions. [2021-08-12 18:53:38,166 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:53:38,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5878 transitions. [2021-08-12 18:53:38,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:53:38,168 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:53:38,168 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:53:38,168 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-08-12 18:53:38,168 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]=== [2021-08-12 18:53:38,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:53:38,169 INFO L82 PathProgramCache]: Analyzing trace with hash -489351237, now seen corresponding path program 138 times [2021-08-12 18:53:38,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:53:38,169 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299272942] [2021-08-12 18:53:38,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:53:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:53:38,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:53:38,261 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:53:38,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299272942] [2021-08-12 18:53:38,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299272942] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:53:38,261 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:53:38,261 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:53:38,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894392844] [2021-08-12 18:53:38,262 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:53:38,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:53:38,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:53:38,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:53:38,262 INFO L87 Difference]: Start difference. First operand 1486 states and 5878 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:53:41,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:53:41,591 INFO L93 Difference]: Finished difference Result 3063 states and 11305 transitions. [2021-08-12 18:53:41,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:53:41,591 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:53:41,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:53:41,611 INFO L225 Difference]: With dead ends: 3063 [2021-08-12 18:53:41,611 INFO L226 Difference]: Without dead ends: 2837 [2021-08-12 18:53:41,612 INFO L806 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 [2021-08-12 18:53:41,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2837 states. [2021-08-12 18:53:42,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2837 to 1448. [2021-08-12 18:53:42,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 3.9813407049067036) internal successors, (5761), 1447 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) [2021-08-12 18:53:42,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5761 transitions. [2021-08-12 18:53:42,022 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5761 transitions. Word has length 25 [2021-08-12 18:53:42,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:53:42,022 INFO L482 AbstractCegarLoop]: Abstraction has 1448 states and 5761 transitions. [2021-08-12 18:53:42,022 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) [2021-08-12 18:53:42,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5761 transitions. [2021-08-12 18:53:42,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:53:42,025 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:53:42,026 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:53:42,026 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-08-12 18:53:42,026 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]=== [2021-08-12 18:53:42,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:53:42,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1835768257, now seen corresponding path program 139 times [2021-08-12 18:53:42,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:53:42,026 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31108563] [2021-08-12 18:53:42,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:53:42,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:53:42,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:53:42,124 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:53:42,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31108563] [2021-08-12 18:53:42,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31108563] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:53:42,124 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:53:42,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:53:42,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450203373] [2021-08-12 18:53:42,125 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:53:42,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:53:42,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:53:42,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:53:42,125 INFO L87 Difference]: Start difference. First operand 1448 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) [2021-08-12 18:53:45,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:53:45,642 INFO L93 Difference]: Finished difference Result 3236 states and 11989 transitions. [2021-08-12 18:53:45,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:53:45,643 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 [2021-08-12 18:53:45,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:53:45,662 INFO L225 Difference]: With dead ends: 3236 [2021-08-12 18:53:45,663 INFO L226 Difference]: Without dead ends: 3046 [2021-08-12 18:53:45,663 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 136.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:53:45,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3046 states. [2021-08-12 18:53:46,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3046 to 1517. [2021-08-12 18:53:46,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1517 states, 1516 states have (on average 3.962401055408971) internal successors, (6007), 1516 states have internal predecessors, (6007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:53:46,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 6007 transitions. [2021-08-12 18:53:46,085 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 6007 transitions. Word has length 25 [2021-08-12 18:53:46,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:53:46,085 INFO L482 AbstractCegarLoop]: Abstraction has 1517 states and 6007 transitions. [2021-08-12 18:53:46,085 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) [2021-08-12 18:53:46,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 6007 transitions. [2021-08-12 18:53:46,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:53:46,088 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:53:46,088 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:53:46,088 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-08-12 18:53:46,088 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]=== [2021-08-12 18:53:46,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:53:46,088 INFO L82 PathProgramCache]: Analyzing trace with hash 415862045, now seen corresponding path program 140 times [2021-08-12 18:53:46,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:53:46,088 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134601639] [2021-08-12 18:53:46,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:53:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:53:46,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:53:46,178 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:53:46,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134601639] [2021-08-12 18:53:46,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134601639] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:53:46,178 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:53:46,178 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:53:46,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579064481] [2021-08-12 18:53:46,178 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:53:46,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:53:46,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:53:46,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:53:46,179 INFO L87 Difference]: Start difference. First operand 1517 states and 6007 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:53:49,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:53:49,714 INFO L93 Difference]: Finished difference Result 3234 states and 11954 transitions. [2021-08-12 18:53:49,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:53:49,715 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 [2021-08-12 18:53:49,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:53:49,740 INFO L225 Difference]: With dead ends: 3234 [2021-08-12 18:53:49,740 INFO L226 Difference]: Without dead ends: 3016 [2021-08-12 18:53:49,741 INFO L806 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 [2021-08-12 18:53:49,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3016 states. [2021-08-12 18:53:50,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3016 to 1487. [2021-08-12 18:53:50,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1487 states, 1486 states have (on average 3.9697173620457606) internal successors, (5899), 1486 states have internal predecessors, (5899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:53:50,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 5899 transitions. [2021-08-12 18:53:50,150 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 5899 transitions. Word has length 25 [2021-08-12 18:53:50,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:53:50,151 INFO L482 AbstractCegarLoop]: Abstraction has 1487 states and 5899 transitions. [2021-08-12 18:53:50,151 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:53:50,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 5899 transitions. [2021-08-12 18:53:50,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:53:50,153 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:53:50,153 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:53:50,153 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-08-12 18:53:50,153 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]=== [2021-08-12 18:53:50,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:53:50,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1900401763, now seen corresponding path program 141 times [2021-08-12 18:53:50,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:53:50,154 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504313075] [2021-08-12 18:53:50,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:53:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:53:50,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:53:50,239 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:53:50,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504313075] [2021-08-12 18:53:50,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504313075] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:53:50,239 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:53:50,240 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:53:50,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809961307] [2021-08-12 18:53:50,240 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:53:50,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:53:50,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:53:50,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:53:50,240 INFO L87 Difference]: Start difference. First operand 1487 states and 5899 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:53:54,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:53:54,127 INFO L93 Difference]: Finished difference Result 3304 states and 12208 transitions. [2021-08-12 18:53:54,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:53:54,127 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:53:54,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:53:54,147 INFO L225 Difference]: With dead ends: 3304 [2021-08-12 18:53:54,147 INFO L226 Difference]: Without dead ends: 3114 [2021-08-12 18:53:54,148 INFO L806 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 [2021-08-12 18:53:54,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3114 states. [2021-08-12 18:53:54,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3114 to 1550. [2021-08-12 18:53:54,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1550 states, 1549 states have (on average 3.9418979987088445) internal successors, (6106), 1549 states have internal predecessors, (6106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:53:54,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1550 states to 1550 states and 6106 transitions. [2021-08-12 18:53:54,577 INFO L78 Accepts]: Start accepts. Automaton has 1550 states and 6106 transitions. Word has length 25 [2021-08-12 18:53:54,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:53:54,577 INFO L482 AbstractCegarLoop]: Abstraction has 1550 states and 6106 transitions. [2021-08-12 18:53:54,577 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:53:54,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1550 states and 6106 transitions. [2021-08-12 18:53:54,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:53:54,579 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:53:54,579 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:53:54,580 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-08-12 18:53:54,580 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]=== [2021-08-12 18:53:54,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:53:54,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1838777245, now seen corresponding path program 142 times [2021-08-12 18:53:54,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:53:54,580 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381903224] [2021-08-12 18:53:54,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:53:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:53:54,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:53:54,666 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:53:54,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381903224] [2021-08-12 18:53:54,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381903224] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:53:54,666 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:53:54,667 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:53:54,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382543424] [2021-08-12 18:53:54,667 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:53:54,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:53:54,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:53:54,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:53:54,667 INFO L87 Difference]: Start difference. First operand 1550 states and 6106 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:53:58,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:53:58,334 INFO L93 Difference]: Finished difference Result 3337 states and 12291 transitions. [2021-08-12 18:53:58,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:53:58,335 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 [2021-08-12 18:53:58,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:53:58,354 INFO L225 Difference]: With dead ends: 3337 [2021-08-12 18:53:58,354 INFO L226 Difference]: Without dead ends: 3051 [2021-08-12 18:53:58,355 INFO L806 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 [2021-08-12 18:53:58,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3051 states. [2021-08-12 18:53:58,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3051 to 1487. [2021-08-12 18:53:58,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1487 states, 1486 states have (on average 3.9488559892328396) internal successors, (5868), 1486 states have internal predecessors, (5868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:53:58,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 5868 transitions. [2021-08-12 18:53:58,776 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 5868 transitions. Word has length 25 [2021-08-12 18:53:58,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:53:58,776 INFO L482 AbstractCegarLoop]: Abstraction has 1487 states and 5868 transitions. [2021-08-12 18:53:58,776 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) [2021-08-12 18:53:58,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 5868 transitions. [2021-08-12 18:53:58,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:53:58,779 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:53:58,779 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:53:58,779 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-08-12 18:53:58,779 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]=== [2021-08-12 18:53:58,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:53:58,779 INFO L82 PathProgramCache]: Analyzing trace with hash -918054149, now seen corresponding path program 143 times [2021-08-12 18:53:58,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:53:58,779 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126132503] [2021-08-12 18:53:58,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:53:58,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:53:58,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:53:58,865 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:53:58,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126132503] [2021-08-12 18:53:58,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126132503] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:53:58,865 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:53:58,865 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:53:58,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142205197] [2021-08-12 18:53:58,866 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:53:58,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:53:58,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:53:58,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:53:58,866 INFO L87 Difference]: Start difference. First operand 1487 states and 5868 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:54:02,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:54:02,527 INFO L93 Difference]: Finished difference Result 3283 states and 12116 transitions. [2021-08-12 18:54:02,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:54:02,528 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:54:02,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:54:02,548 INFO L225 Difference]: With dead ends: 3283 [2021-08-12 18:54:02,548 INFO L226 Difference]: Without dead ends: 3095 [2021-08-12 18:54:02,549 INFO L806 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 [2021-08-12 18:54:02,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3095 states. [2021-08-12 18:54:02,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3095 to 1533. [2021-08-12 18:54:02,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1533 states, 1532 states have (on average 3.9327676240208875) internal successors, (6025), 1532 states have internal predecessors, (6025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:54:02,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1533 states to 1533 states and 6025 transitions. [2021-08-12 18:54:02,982 INFO L78 Accepts]: Start accepts. Automaton has 1533 states and 6025 transitions. Word has length 25 [2021-08-12 18:54:02,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:54:02,982 INFO L482 AbstractCegarLoop]: Abstraction has 1533 states and 6025 transitions. [2021-08-12 18:54:02,982 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) [2021-08-12 18:54:02,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1533 states and 6025 transitions. [2021-08-12 18:54:02,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:54:02,985 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:54:02,985 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:54:02,985 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-08-12 18:54:02,986 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]=== [2021-08-12 18:54:02,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:54:02,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1019523549, now seen corresponding path program 144 times [2021-08-12 18:54:02,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:54:02,986 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968332369] [2021-08-12 18:54:02,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:54:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:54:03,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:54:03,073 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:54:03,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968332369] [2021-08-12 18:54:03,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968332369] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:54:03,073 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:54:03,073 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:54:03,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200212303] [2021-08-12 18:54:03,074 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:54:03,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:54:03,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:54:03,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:54:03,074 INFO L87 Difference]: Start difference. First operand 1533 states and 6025 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:54:06,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:54:06,821 INFO L93 Difference]: Finished difference Result 3318 states and 12205 transitions. [2021-08-12 18:54:06,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:54:06,821 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:54:06,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:54:06,843 INFO L225 Difference]: With dead ends: 3318 [2021-08-12 18:54:06,843 INFO L226 Difference]: Without dead ends: 2994 [2021-08-12 18:54:06,844 INFO L806 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 [2021-08-12 18:54:06,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2021-08-12 18:54:07,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 1432. [2021-08-12 18:54:07,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1431 states have (on average 3.989517819706499) internal successors, (5709), 1431 states have internal predecessors, (5709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:54:07,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 5709 transitions. [2021-08-12 18:54:07,295 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 5709 transitions. Word has length 25 [2021-08-12 18:54:07,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:54:07,295 INFO L482 AbstractCegarLoop]: Abstraction has 1432 states and 5709 transitions. [2021-08-12 18:54:07,295 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) [2021-08-12 18:54:07,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 5709 transitions. [2021-08-12 18:54:07,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:54:07,297 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:54:07,297 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:54:07,298 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-08-12 18:54:07,298 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]=== [2021-08-12 18:54:07,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:54:07,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1287212865, now seen corresponding path program 145 times [2021-08-12 18:54:07,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:54:07,298 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97117184] [2021-08-12 18:54:07,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:54:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:54:07,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:54:07,402 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:54:07,402 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97117184] [2021-08-12 18:54:07,402 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97117184] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:54:07,402 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:54:07,402 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:54:07,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839381236] [2021-08-12 18:54:07,402 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:54:07,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:54:07,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:54:07,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:54:07,402 INFO L87 Difference]: Start difference. First operand 1432 states and 5709 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:54:10,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:54:10,871 INFO L93 Difference]: Finished difference Result 3079 states and 11405 transitions. [2021-08-12 18:54:10,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:54:10,872 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:54:10,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:54:10,891 INFO L225 Difference]: With dead ends: 3079 [2021-08-12 18:54:10,891 INFO L226 Difference]: Without dead ends: 2919 [2021-08-12 18:54:10,891 INFO L806 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 [2021-08-12 18:54:10,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2919 states. [2021-08-12 18:54:11,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2919 to 1500. [2021-08-12 18:54:11,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 1499 states have (on average 3.9873248832555035) internal successors, (5977), 1499 states have internal predecessors, (5977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:54:11,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 5977 transitions. [2021-08-12 18:54:11,318 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 5977 transitions. Word has length 25 [2021-08-12 18:54:11,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:54:11,318 INFO L482 AbstractCegarLoop]: Abstraction has 1500 states and 5977 transitions. [2021-08-12 18:54:11,318 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:54:11,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 5977 transitions. [2021-08-12 18:54:11,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:54:11,320 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:54:11,320 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:54:11,321 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-08-12 18:54:11,321 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]=== [2021-08-12 18:54:11,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:54:11,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1999456447, now seen corresponding path program 146 times [2021-08-12 18:54:11,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:54:11,321 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542550141] [2021-08-12 18:54:11,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:54:11,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:54:11,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:54:11,422 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:54:11,422 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542550141] [2021-08-12 18:54:11,423 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542550141] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:54:11,423 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:54:11,423 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:54:11,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103123401] [2021-08-12 18:54:11,423 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:54:11,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:54:11,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:54:11,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:54:11,423 INFO L87 Difference]: Start difference. First operand 1500 states and 5977 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:54:14,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:54:14,975 INFO L93 Difference]: Finished difference Result 3142 states and 11612 transitions. [2021-08-12 18:54:14,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:54:14,975 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 [2021-08-12 18:54:14,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:54:14,995 INFO L225 Difference]: With dead ends: 3142 [2021-08-12 18:54:14,995 INFO L226 Difference]: Without dead ends: 2887 [2021-08-12 18:54:14,996 INFO L806 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 [2021-08-12 18:54:15,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2021-08-12 18:54:15,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 1468. [2021-08-12 18:54:15,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1467 states have (on average 3.9870483980913427) internal successors, (5849), 1467 states have internal predecessors, (5849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:54:15,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 5849 transitions. [2021-08-12 18:54:15,439 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 5849 transitions. Word has length 25 [2021-08-12 18:54:15,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:54:15,440 INFO L482 AbstractCegarLoop]: Abstraction has 1468 states and 5849 transitions. [2021-08-12 18:54:15,440 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) [2021-08-12 18:54:15,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 5849 transitions. [2021-08-12 18:54:15,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:54:15,442 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:54:15,442 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:54:15,442 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-08-12 18:54:15,442 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]=== [2021-08-12 18:54:15,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:54:15,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1248598181, now seen corresponding path program 147 times [2021-08-12 18:54:15,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:54:15,443 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734468156] [2021-08-12 18:54:15,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:54:15,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:54:15,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:54:15,547 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:54:15,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734468156] [2021-08-12 18:54:15,547 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734468156] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:54:15,547 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:54:15,547 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:54:15,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205852471] [2021-08-12 18:54:15,547 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:54:15,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:54:15,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:54:15,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:54:15,548 INFO L87 Difference]: Start difference. First operand 1468 states and 5849 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:54:18,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:54:18,947 INFO L93 Difference]: Finished difference Result 3030 states and 11211 transitions. [2021-08-12 18:54:18,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:54:18,948 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 [2021-08-12 18:54:18,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:54:18,968 INFO L225 Difference]: With dead ends: 3030 [2021-08-12 18:54:18,968 INFO L226 Difference]: Without dead ends: 2870 [2021-08-12 18:54:18,969 INFO L806 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 [2021-08-12 18:54:18,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2870 states. [2021-08-12 18:54:19,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 1484. [2021-08-12 18:54:19,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1484 states, 1483 states have (on average 3.9763991908294) internal successors, (5897), 1483 states have internal predecessors, (5897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:54:19,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1484 states to 1484 states and 5897 transitions. [2021-08-12 18:54:19,426 INFO L78 Accepts]: Start accepts. Automaton has 1484 states and 5897 transitions. Word has length 25 [2021-08-12 18:54:19,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:54:19,427 INFO L482 AbstractCegarLoop]: Abstraction has 1484 states and 5897 transitions. [2021-08-12 18:54:19,427 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) [2021-08-12 18:54:19,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1484 states and 5897 transitions. [2021-08-12 18:54:19,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:54:19,429 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:54:19,429 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:54:19,429 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-08-12 18:54:19,430 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]=== [2021-08-12 18:54:19,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:54:19,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1456434365, now seen corresponding path program 148 times [2021-08-12 18:54:19,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:54:19,430 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043946741] [2021-08-12 18:54:19,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:54:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:54:19,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:54:19,540 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:54:19,540 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043946741] [2021-08-12 18:54:19,540 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043946741] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:54:19,540 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:54:19,540 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:54:19,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704977865] [2021-08-12 18:54:19,540 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:54:19,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:54:19,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:54:19,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:54:19,541 INFO L87 Difference]: Start difference. First operand 1484 states and 5897 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:54:23,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:54:23,036 INFO L93 Difference]: Finished difference Result 3060 states and 11304 transitions. [2021-08-12 18:54:23,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:54:23,036 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:54:23,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:54:23,058 INFO L225 Difference]: With dead ends: 3060 [2021-08-12 18:54:23,058 INFO L226 Difference]: Without dead ends: 2854 [2021-08-12 18:54:23,059 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 126.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:54:23,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2021-08-12 18:54:23,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 1468. [2021-08-12 18:54:23,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1467 states have (on average 3.98159509202454) internal successors, (5841), 1467 states have internal predecessors, (5841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:54:23,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 5841 transitions. [2021-08-12 18:54:23,513 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 5841 transitions. Word has length 25 [2021-08-12 18:54:23,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:54:23,513 INFO L482 AbstractCegarLoop]: Abstraction has 1468 states and 5841 transitions. [2021-08-12 18:54:23,513 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) [2021-08-12 18:54:23,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 5841 transitions. [2021-08-12 18:54:23,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:54:23,516 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:54:23,516 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:54:23,516 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-08-12 18:54:23,516 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]=== [2021-08-12 18:54:23,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:54:23,516 INFO L82 PathProgramCache]: Analyzing trace with hash 818270879, now seen corresponding path program 149 times [2021-08-12 18:54:23,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:54:23,516 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511966814] [2021-08-12 18:54:23,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:54:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:54:23,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:54:23,608 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:54:23,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511966814] [2021-08-12 18:54:23,609 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511966814] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:54:23,609 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:54:23,609 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:54:23,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739278869] [2021-08-12 18:54:23,609 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:54:23,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:54:23,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:54:23,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:54:23,609 INFO L87 Difference]: Start difference. First operand 1468 states and 5841 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:54:27,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:54:27,200 INFO L93 Difference]: Finished difference Result 3170 states and 11709 transitions. [2021-08-12 18:54:27,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:54:27,201 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 [2021-08-12 18:54:27,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:54:27,221 INFO L225 Difference]: With dead ends: 3170 [2021-08-12 18:54:27,221 INFO L226 Difference]: Without dead ends: 2980 [2021-08-12 18:54:27,222 INFO L806 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 [2021-08-12 18:54:27,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2980 states. [2021-08-12 18:54:27,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2980 to 1531. [2021-08-12 18:54:27,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1531 states, 1530 states have (on average 3.9529411764705884) internal successors, (6048), 1530 states have internal predecessors, (6048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:54:27,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 6048 transitions. [2021-08-12 18:54:27,691 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 6048 transitions. Word has length 25 [2021-08-12 18:54:27,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:54:27,692 INFO L482 AbstractCegarLoop]: Abstraction has 1531 states and 6048 transitions. [2021-08-12 18:54:27,692 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) [2021-08-12 18:54:27,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 6048 transitions. [2021-08-12 18:54:27,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:54:27,694 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:54:27,694 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:54:27,694 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-08-12 18:54:27,694 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]=== [2021-08-12 18:54:27,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:54:27,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1116323837, now seen corresponding path program 150 times [2021-08-12 18:54:27,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:54:27,695 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680899782] [2021-08-12 18:54:27,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:54:27,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:54:27,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:54:27,789 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:54:27,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680899782] [2021-08-12 18:54:27,789 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680899782] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:54:27,790 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:54:27,790 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:54:27,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289581234] [2021-08-12 18:54:27,790 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:54:27,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:54:27,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:54:27,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:54:27,790 INFO L87 Difference]: Start difference. First operand 1531 states and 6048 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:54:31,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:54:31,460 INFO L93 Difference]: Finished difference Result 3203 states and 11792 transitions. [2021-08-12 18:54:31,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:54:31,460 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:54:31,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:54:31,481 INFO L225 Difference]: With dead ends: 3203 [2021-08-12 18:54:31,481 INFO L226 Difference]: Without dead ends: 2893 [2021-08-12 18:54:31,482 INFO L806 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 [2021-08-12 18:54:31,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2021-08-12 18:54:31,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 1444. [2021-08-12 18:54:31,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 3.986832986832987) internal successors, (5753), 1443 states have internal predecessors, (5753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:54:31,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5753 transitions. [2021-08-12 18:54:31,922 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5753 transitions. Word has length 25 [2021-08-12 18:54:31,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:54:31,922 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 5753 transitions. [2021-08-12 18:54:31,923 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:54:31,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5753 transitions. [2021-08-12 18:54:31,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:54:31,925 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:54:31,925 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:54:31,925 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-08-12 18:54:31,925 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]=== [2021-08-12 18:54:31,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:54:31,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1279544867, now seen corresponding path program 151 times [2021-08-12 18:54:31,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:54:31,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205681114] [2021-08-12 18:54:31,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:54:31,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:54:32,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:54:32,039 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:54:32,039 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205681114] [2021-08-12 18:54:32,039 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205681114] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:54:32,039 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:54:32,039 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:54:32,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184888054] [2021-08-12 18:54:32,039 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:54:32,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:54:32,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:54:32,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:54:32,040 INFO L87 Difference]: Start difference. First operand 1444 states and 5753 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:54:35,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:54:35,458 INFO L93 Difference]: Finished difference Result 3002 states and 11118 transitions. [2021-08-12 18:54:35,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:54:35,459 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 [2021-08-12 18:54:35,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:54:35,479 INFO L225 Difference]: With dead ends: 3002 [2021-08-12 18:54:35,479 INFO L226 Difference]: Without dead ends: 2842 [2021-08-12 18:54:35,479 INFO L806 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 [2021-08-12 18:54:35,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2021-08-12 18:54:35,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1492. [2021-08-12 18:54:35,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1492 states, 1491 states have (on average 3.9818913480885314) internal successors, (5937), 1491 states have internal predecessors, (5937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:54:35,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 5937 transitions. [2021-08-12 18:54:35,924 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 5937 transitions. Word has length 25 [2021-08-12 18:54:35,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:54:35,924 INFO L482 AbstractCegarLoop]: Abstraction has 1492 states and 5937 transitions. [2021-08-12 18:54:35,924 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) [2021-08-12 18:54:35,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 5937 transitions. [2021-08-12 18:54:35,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:54:35,927 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:54:35,927 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:54:35,927 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-08-12 18:54:35,927 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]=== [2021-08-12 18:54:35,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:54:35,927 INFO L82 PathProgramCache]: Analyzing trace with hash 2007124445, now seen corresponding path program 152 times [2021-08-12 18:54:35,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:54:35,927 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150392539] [2021-08-12 18:54:35,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:54:35,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:54:36,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:54:36,044 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:54:36,044 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150392539] [2021-08-12 18:54:36,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150392539] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:54:36,044 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:54:36,044 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:54:36,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972579781] [2021-08-12 18:54:36,044 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:54:36,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:54:36,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:54:36,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:54:36,045 INFO L87 Difference]: Start difference. First operand 1492 states and 5937 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:54:39,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:54:39,631 INFO L93 Difference]: Finished difference Result 3065 states and 11325 transitions. [2021-08-12 18:54:39,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:54:39,631 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:54:39,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:54:39,652 INFO L225 Difference]: With dead ends: 3065 [2021-08-12 18:54:39,652 INFO L226 Difference]: Without dead ends: 2810 [2021-08-12 18:54:39,652 INFO L806 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 [2021-08-12 18:54:39,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2021-08-12 18:54:40,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 1460. [2021-08-12 18:54:40,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1459 states have (on average 3.9814941740918437) internal successors, (5809), 1459 states have internal predecessors, (5809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:54:40,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5809 transitions. [2021-08-12 18:54:40,088 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5809 transitions. Word has length 25 [2021-08-12 18:54:40,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:54:40,088 INFO L482 AbstractCegarLoop]: Abstraction has 1460 states and 5809 transitions. [2021-08-12 18:54:40,088 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:54:40,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5809 transitions. [2021-08-12 18:54:40,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:54:40,090 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:54:40,090 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:54:40,091 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-08-12 18:54:40,091 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]=== [2021-08-12 18:54:40,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:54:40,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1799001343, now seen corresponding path program 153 times [2021-08-12 18:54:40,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:54:40,091 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430889213] [2021-08-12 18:54:40,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:54:40,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:54:40,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:54:40,197 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:54:40,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430889213] [2021-08-12 18:54:40,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430889213] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:54:40,197 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:54:40,197 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:54:40,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087227952] [2021-08-12 18:54:40,198 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:54:40,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:54:40,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:54:40,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:54:40,198 INFO L87 Difference]: Start difference. First operand 1460 states and 5809 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:54:43,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:54:43,457 INFO L93 Difference]: Finished difference Result 2907 states and 10767 transitions. [2021-08-12 18:54:43,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:54:43,458 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:54:43,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:54:43,485 INFO L225 Difference]: With dead ends: 2907 [2021-08-12 18:54:43,486 INFO L226 Difference]: Without dead ends: 2747 [2021-08-12 18:54:43,486 INFO L806 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 [2021-08-12 18:54:43,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2747 states. [2021-08-12 18:54:43,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2747 to 1476. [2021-08-12 18:54:43,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1475 states have (on average 3.9708474576271184) internal successors, (5857), 1475 states have internal predecessors, (5857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:54:43,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 5857 transitions. [2021-08-12 18:54:43,933 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 5857 transitions. Word has length 25 [2021-08-12 18:54:43,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:54:43,934 INFO L482 AbstractCegarLoop]: Abstraction has 1476 states and 5857 transitions. [2021-08-12 18:54:43,934 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) [2021-08-12 18:54:43,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 5857 transitions. [2021-08-12 18:54:43,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:54:43,936 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:54:43,936 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:54:43,936 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-08-12 18:54:43,936 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]=== [2021-08-12 18:54:43,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:54:43,937 INFO L82 PathProgramCache]: Analyzing trace with hash -143270657, now seen corresponding path program 154 times [2021-08-12 18:54:43,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:54:43,937 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873918464] [2021-08-12 18:54:43,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:54:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:54:44,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:54:44,027 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:54:44,027 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873918464] [2021-08-12 18:54:44,027 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873918464] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:54:44,027 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:54:44,027 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:54:44,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452238256] [2021-08-12 18:54:44,027 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:54:44,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:54:44,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:54:44,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:54:44,028 INFO L87 Difference]: Start difference. First operand 1476 states and 5857 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:54:46,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:54:46,963 INFO L93 Difference]: Finished difference Result 2795 states and 10430 transitions. [2021-08-12 18:54:46,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:54:46,964 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 [2021-08-12 18:54:46,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:54:46,984 INFO L225 Difference]: With dead ends: 2795 [2021-08-12 18:54:46,985 INFO L226 Difference]: Without dead ends: 2603 [2021-08-12 18:54:46,985 INFO L806 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 [2021-08-12 18:54:47,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2603 states. [2021-08-12 18:54:47,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2603 to 1460. [2021-08-12 18:54:47,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1459 states have (on average 3.976010966415353) internal successors, (5801), 1459 states have internal predecessors, (5801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:54:47,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5801 transitions. [2021-08-12 18:54:47,433 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5801 transitions. Word has length 25 [2021-08-12 18:54:47,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:54:47,433 INFO L482 AbstractCegarLoop]: Abstraction has 1460 states and 5801 transitions. [2021-08-12 18:54:47,434 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) [2021-08-12 18:54:47,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5801 transitions. [2021-08-12 18:54:47,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:54:47,436 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:54:47,436 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:54:47,436 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-08-12 18:54:47,436 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]=== [2021-08-12 18:54:47,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:54:47,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1544975615, now seen corresponding path program 155 times [2021-08-12 18:54:47,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:54:47,437 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305723826] [2021-08-12 18:54:47,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:54:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:54:47,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:54:47,539 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:54:47,539 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305723826] [2021-08-12 18:54:47,540 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305723826] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:54:47,540 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:54:47,540 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:54:47,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114120068] [2021-08-12 18:54:47,540 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:54:47,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:54:47,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:54:47,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:54:47,540 INFO L87 Difference]: Start difference. First operand 1460 states and 5801 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:54:50,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:54:50,938 INFO L93 Difference]: Finished difference Result 3042 states and 11258 transitions. [2021-08-12 18:54:50,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:54:50,938 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 [2021-08-12 18:54:50,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:54:50,958 INFO L225 Difference]: With dead ends: 3042 [2021-08-12 18:54:50,959 INFO L226 Difference]: Without dead ends: 2866 [2021-08-12 18:54:50,959 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:54:50,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2866 states. [2021-08-12 18:54:51,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2866 to 1500. [2021-08-12 18:54:51,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 1499 states have (on average 3.963308872581721) internal successors, (5941), 1499 states have internal predecessors, (5941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:54:51,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 5941 transitions. [2021-08-12 18:54:51,402 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 5941 transitions. Word has length 25 [2021-08-12 18:54:51,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:54:51,403 INFO L482 AbstractCegarLoop]: Abstraction has 1500 states and 5941 transitions. [2021-08-12 18:54:51,403 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) [2021-08-12 18:54:51,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 5941 transitions. [2021-08-12 18:54:51,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:54:51,405 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:54:51,405 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:54:51,405 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-08-12 18:54:51,405 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]=== [2021-08-12 18:54:51,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:54:51,405 INFO L82 PathProgramCache]: Analyzing trace with hash -110548771, now seen corresponding path program 156 times [2021-08-12 18:54:51,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:54:51,406 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289490581] [2021-08-12 18:54:51,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:54:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:54:51,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:54:51,506 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:54:51,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289490581] [2021-08-12 18:54:51,506 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289490581] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:54:51,506 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:54:51,506 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:54:51,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993232094] [2021-08-12 18:54:51,506 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:54:51,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:54:51,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:54:51,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:54:51,507 INFO L87 Difference]: Start difference. First operand 1500 states and 5941 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:54:54,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:54:54,938 INFO L93 Difference]: Finished difference Result 2994 states and 11058 transitions. [2021-08-12 18:54:54,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:54:54,938 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 [2021-08-12 18:54:54,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:54:54,959 INFO L225 Difference]: With dead ends: 2994 [2021-08-12 18:54:54,959 INFO L226 Difference]: Without dead ends: 2715 [2021-08-12 18:54:54,959 INFO L806 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 [2021-08-12 18:54:54,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2715 states. [2021-08-12 18:54:55,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2715 to 1444. [2021-08-12 18:54:55,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 3.9812889812889813) internal successors, (5745), 1443 states have internal predecessors, (5745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:54:55,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5745 transitions. [2021-08-12 18:54:55,405 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5745 transitions. Word has length 25 [2021-08-12 18:54:55,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:54:55,406 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 5745 transitions. [2021-08-12 18:54:55,406 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) [2021-08-12 18:54:55,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5745 transitions. [2021-08-12 18:54:55,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:54:55,408 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:54:55,408 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:54:55,408 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-08-12 18:54:55,408 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]=== [2021-08-12 18:54:55,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:54:55,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1747685561, now seen corresponding path program 157 times [2021-08-12 18:54:55,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:54:55,408 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527836780] [2021-08-12 18:54:55,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:54:55,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:54:55,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:54:55,525 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:54:55,525 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527836780] [2021-08-12 18:54:55,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527836780] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:54:55,525 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:54:55,525 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:54:55,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501703585] [2021-08-12 18:54:55,525 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:54:55,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:54:55,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:54:55,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:54:55,525 INFO L87 Difference]: Start difference. First operand 1444 states and 5745 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:54:58,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:54:58,970 INFO L93 Difference]: Finished difference Result 2896 states and 10718 transitions. [2021-08-12 18:54:58,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:54:58,970 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:54:58,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:54:58,991 INFO L225 Difference]: With dead ends: 2896 [2021-08-12 18:54:58,991 INFO L226 Difference]: Without dead ends: 2736 [2021-08-12 18:54:58,991 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 118.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:54:59,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2736 states. [2021-08-12 18:54:59,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2736 to 1468. [2021-08-12 18:54:59,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1467 states have (on average 3.9734151329243352) internal successors, (5829), 1467 states have internal predecessors, (5829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:54:59,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 5829 transitions. [2021-08-12 18:54:59,461 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 5829 transitions. Word has length 25 [2021-08-12 18:54:59,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:54:59,461 INFO L482 AbstractCegarLoop]: Abstraction has 1468 states and 5829 transitions. [2021-08-12 18:54:59,461 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) [2021-08-12 18:54:59,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 5829 transitions. [2021-08-12 18:54:59,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:54:59,464 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:54:59,464 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:54:59,464 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-08-12 18:54:59,464 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]=== [2021-08-12 18:54:59,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:54:59,464 INFO L82 PathProgramCache]: Analyzing trace with hash 157750811, now seen corresponding path program 158 times [2021-08-12 18:54:59,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:54:59,464 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412039851] [2021-08-12 18:54:59,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:54:59,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:54:59,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:54:59,567 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:54:59,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412039851] [2021-08-12 18:54:59,567 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412039851] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:54:59,567 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:54:59,567 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:54:59,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65790144] [2021-08-12 18:54:59,567 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:54:59,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:54:59,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:54:59,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:54:59,568 INFO L87 Difference]: Start difference. First operand 1468 states and 5829 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:55:03,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:55:03,069 INFO L93 Difference]: Finished difference Result 2926 states and 10811 transitions. [2021-08-12 18:55:03,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:55:03,070 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 [2021-08-12 18:55:03,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:55:03,091 INFO L225 Difference]: With dead ends: 2926 [2021-08-12 18:55:03,091 INFO L226 Difference]: Without dead ends: 2720 [2021-08-12 18:55:03,091 INFO L806 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 [2021-08-12 18:55:03,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2720 states. [2021-08-12 18:55:03,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2720 to 1452. [2021-08-12 18:55:03,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1451 states have (on average 3.9786354238456236) internal successors, (5773), 1451 states have internal predecessors, (5773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:55:03,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 5773 transitions. [2021-08-12 18:55:03,615 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 5773 transitions. Word has length 25 [2021-08-12 18:55:03,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:55:03,616 INFO L482 AbstractCegarLoop]: Abstraction has 1452 states and 5773 transitions. [2021-08-12 18:55:03,616 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) [2021-08-12 18:55:03,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 5773 transitions. [2021-08-12 18:55:03,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:55:03,618 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:55:03,618 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:55:03,618 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-08-12 18:55:03,618 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]=== [2021-08-12 18:55:03,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:55:03,618 INFO L82 PathProgramCache]: Analyzing trace with hash 253007003, now seen corresponding path program 159 times [2021-08-12 18:55:03,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:55:03,618 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526449203] [2021-08-12 18:55:03,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:55:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:55:03,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:55:03,731 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:55:03,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526449203] [2021-08-12 18:55:03,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526449203] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:55:03,731 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:55:03,731 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:55:03,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420154406] [2021-08-12 18:55:03,731 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:55:03,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:55:03,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:55:03,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:55:03,732 INFO L87 Difference]: Start difference. First operand 1452 states and 5773 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:55:07,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:55:07,533 INFO L93 Difference]: Finished difference Result 2850 states and 10553 transitions. [2021-08-12 18:55:07,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:55:07,534 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:55:07,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:55:07,553 INFO L225 Difference]: With dead ends: 2850 [2021-08-12 18:55:07,553 INFO L226 Difference]: Without dead ends: 2690 [2021-08-12 18:55:07,554 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 118.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:55:07,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2690 states. [2021-08-12 18:55:07,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2690 to 1468. [2021-08-12 18:55:07,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1467 states have (on average 3.9679618268575325) internal successors, (5821), 1467 states have internal predecessors, (5821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:55:07,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 5821 transitions. [2021-08-12 18:55:08,002 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 5821 transitions. Word has length 25 [2021-08-12 18:55:08,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:55:08,003 INFO L482 AbstractCegarLoop]: Abstraction has 1468 states and 5821 transitions. [2021-08-12 18:55:08,003 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:55:08,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 5821 transitions. [2021-08-12 18:55:08,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:55:08,005 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:55:08,005 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:55:08,005 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-08-12 18:55:08,005 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]=== [2021-08-12 18:55:08,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:55:08,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1689264997, now seen corresponding path program 160 times [2021-08-12 18:55:08,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:55:08,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313271412] [2021-08-12 18:55:08,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:55:08,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:55:08,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:55:08,125 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:55:08,125 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313271412] [2021-08-12 18:55:08,125 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313271412] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:55:08,125 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:55:08,126 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:55:08,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608675334] [2021-08-12 18:55:08,126 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:55:08,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:55:08,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:55:08,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:55:08,126 INFO L87 Difference]: Start difference. First operand 1468 states and 5821 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:55:11,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:55:11,265 INFO L93 Difference]: Finished difference Result 2738 states and 10216 transitions. [2021-08-12 18:55:11,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:55:11,265 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:55:11,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:55:11,285 INFO L225 Difference]: With dead ends: 2738 [2021-08-12 18:55:11,285 INFO L226 Difference]: Without dead ends: 2546 [2021-08-12 18:55:11,286 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 139.3ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:55:11,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2021-08-12 18:55:11,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 1452. [2021-08-12 18:55:11,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1451 states have (on average 3.9731219848380426) internal successors, (5765), 1451 states have internal predecessors, (5765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:55:11,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 5765 transitions. [2021-08-12 18:55:11,753 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 5765 transitions. Word has length 25 [2021-08-12 18:55:11,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:55:11,753 INFO L482 AbstractCegarLoop]: Abstraction has 1452 states and 5765 transitions. [2021-08-12 18:55:11,753 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:55:11,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 5765 transitions. [2021-08-12 18:55:11,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:55:11,756 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:55:11,756 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:55:11,756 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-08-12 18:55:11,756 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]=== [2021-08-12 18:55:11,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:55:11,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1670168957, now seen corresponding path program 161 times [2021-08-12 18:55:11,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:55:11,756 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977183664] [2021-08-12 18:55:11,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:55:11,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:55:11,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:55:11,875 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:55:11,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977183664] [2021-08-12 18:55:11,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977183664] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:55:11,875 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:55:11,875 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:55:11,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778607118] [2021-08-12 18:55:11,875 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:55:11,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:55:11,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:55:11,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:55:11,876 INFO L87 Difference]: Start difference. First operand 1452 states and 5765 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:55:15,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:55:15,564 INFO L93 Difference]: Finished difference Result 2888 states and 10690 transitions. [2021-08-12 18:55:15,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:55:15,564 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 [2021-08-12 18:55:15,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:55:15,582 INFO L225 Difference]: With dead ends: 2888 [2021-08-12 18:55:15,582 INFO L226 Difference]: Without dead ends: 2698 [2021-08-12 18:55:15,583 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 125.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:55:15,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2698 states. [2021-08-12 18:55:16,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2698 to 1476. [2021-08-12 18:55:16,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1475 states have (on average 3.96) internal successors, (5841), 1475 states have internal predecessors, (5841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:55:16,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 5841 transitions. [2021-08-12 18:55:16,048 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 5841 transitions. Word has length 25 [2021-08-12 18:55:16,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:55:16,048 INFO L482 AbstractCegarLoop]: Abstraction has 1476 states and 5841 transitions. [2021-08-12 18:55:16,048 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) [2021-08-12 18:55:16,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 5841 transitions. [2021-08-12 18:55:16,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:55:16,050 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:55:16,050 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:55:16,051 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-08-12 18:55:16,051 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]=== [2021-08-12 18:55:16,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:55:16,051 INFO L82 PathProgramCache]: Analyzing trace with hash 929216859, now seen corresponding path program 162 times [2021-08-12 18:55:16,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:55:16,051 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890502642] [2021-08-12 18:55:16,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:55:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:55:16,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:55:16,161 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:55:16,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890502642] [2021-08-12 18:55:16,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890502642] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:55:16,161 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:55:16,161 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:55:16,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776816585] [2021-08-12 18:55:16,161 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:55:16,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:55:16,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:55:16,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:55:16,162 INFO L87 Difference]: Start difference. First operand 1476 states and 5841 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:55:19,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:55:19,328 INFO L93 Difference]: Finished difference Result 2746 states and 10236 transitions. [2021-08-12 18:55:19,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:55:19,329 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:55:19,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:55:19,352 INFO L225 Difference]: With dead ends: 2746 [2021-08-12 18:55:19,352 INFO L226 Difference]: Without dead ends: 2538 [2021-08-12 18:55:19,353 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 130.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:55:19,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2538 states. [2021-08-12 18:55:19,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2538 to 1444. [2021-08-12 18:55:19,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 3.9785169785169785) internal successors, (5741), 1443 states have internal predecessors, (5741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:55:19,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5741 transitions. [2021-08-12 18:55:19,837 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5741 transitions. Word has length 25 [2021-08-12 18:55:19,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:55:19,838 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 5741 transitions. [2021-08-12 18:55:19,838 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:55:19,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5741 transitions. [2021-08-12 18:55:19,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:55:19,840 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:55:19,840 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:55:19,840 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-08-12 18:55:19,840 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]=== [2021-08-12 18:55:19,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:55:19,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1719585057, now seen corresponding path program 163 times [2021-08-12 18:55:19,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:55:19,841 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254036580] [2021-08-12 18:55:19,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:55:19,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:55:19,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:55:19,946 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:55:19,946 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254036580] [2021-08-12 18:55:19,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254036580] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:55:19,946 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:55:19,946 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:55:19,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074954288] [2021-08-12 18:55:19,947 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:55:19,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:55:19,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:55:19,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:55:19,947 INFO L87 Difference]: Start difference. First operand 1444 states and 5741 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:55:24,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:55:24,056 INFO L93 Difference]: Finished difference Result 3120 states and 11568 transitions. [2021-08-12 18:55:24,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:55:24,057 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:55:24,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:55:24,074 INFO L225 Difference]: With dead ends: 3120 [2021-08-12 18:55:24,074 INFO L226 Difference]: Without dead ends: 2930 [2021-08-12 18:55:24,074 INFO L806 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 [2021-08-12 18:55:24,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2021-08-12 18:55:24,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1496. [2021-08-12 18:55:24,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 1495 states have (on average 3.97123745819398) internal successors, (5937), 1495 states have internal predecessors, (5937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:55:24,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 5937 transitions. [2021-08-12 18:55:24,541 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 5937 transitions. Word has length 25 [2021-08-12 18:55:24,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:55:24,542 INFO L482 AbstractCegarLoop]: Abstraction has 1496 states and 5937 transitions. [2021-08-12 18:55:24,542 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:55:24,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 5937 transitions. [2021-08-12 18:55:24,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:55:24,544 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:55:24,544 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:55:24,544 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-08-12 18:55:24,544 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]=== [2021-08-12 18:55:24,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:55:24,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1834430141, now seen corresponding path program 164 times [2021-08-12 18:55:24,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:55:24,545 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133844618] [2021-08-12 18:55:24,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:55:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:55:24,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:55:24,651 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:55:24,651 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133844618] [2021-08-12 18:55:24,651 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133844618] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:55:24,651 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:55:24,651 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:55:24,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843858548] [2021-08-12 18:55:24,652 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:55:24,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:55:24,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:55:24,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:55:24,652 INFO L87 Difference]: Start difference. First operand 1496 states and 5937 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:55:28,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:55:28,356 INFO L93 Difference]: Finished difference Result 3106 states and 11499 transitions. [2021-08-12 18:55:28,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:55:28,356 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 [2021-08-12 18:55:28,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:55:28,378 INFO L225 Difference]: With dead ends: 3106 [2021-08-12 18:55:28,378 INFO L226 Difference]: Without dead ends: 2906 [2021-08-12 18:55:28,379 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 125.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:55:28,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2021-08-12 18:55:28,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 1472. [2021-08-12 18:55:28,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1471 states have (on average 3.976206662134602) internal successors, (5849), 1471 states have internal predecessors, (5849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:55:28,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5849 transitions. [2021-08-12 18:55:28,881 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5849 transitions. Word has length 25 [2021-08-12 18:55:28,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:55:28,881 INFO L482 AbstractCegarLoop]: Abstraction has 1472 states and 5849 transitions. [2021-08-12 18:55:28,881 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:55:28,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5849 transitions. [2021-08-12 18:55:28,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:55:28,883 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:55:28,883 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:55:28,884 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-08-12 18:55:28,884 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]=== [2021-08-12 18:55:28,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:55:28,884 INFO L82 PathProgramCache]: Analyzing trace with hash 754346813, now seen corresponding path program 165 times [2021-08-12 18:55:28,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:55:28,884 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981987274] [2021-08-12 18:55:28,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:55:28,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:55:28,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:55:28,989 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:55:28,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981987274] [2021-08-12 18:55:28,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981987274] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:55:28,989 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:55:28,989 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:55:28,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804837257] [2021-08-12 18:55:28,989 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:55:28,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:55:28,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:55:28,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:55:28,989 INFO L87 Difference]: Start difference. First operand 1472 states and 5849 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:55:32,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:55:32,935 INFO L93 Difference]: Finished difference Result 3143 states and 11615 transitions. [2021-08-12 18:55:32,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:55:32,935 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:55:32,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:55:32,954 INFO L225 Difference]: With dead ends: 3143 [2021-08-12 18:55:32,955 INFO L226 Difference]: Without dead ends: 2953 [2021-08-12 18:55:32,955 INFO L806 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 [2021-08-12 18:55:32,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2021-08-12 18:55:33,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 1535. [2021-08-12 18:55:33,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1535 states, 1534 states have (on average 3.9478487614080833) internal successors, (6056), 1534 states have internal predecessors, (6056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:55:33,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 6056 transitions. [2021-08-12 18:55:33,451 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 6056 transitions. Word has length 25 [2021-08-12 18:55:33,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:55:33,452 INFO L482 AbstractCegarLoop]: Abstraction has 1535 states and 6056 transitions. [2021-08-12 18:55:33,452 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) [2021-08-12 18:55:33,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 6056 transitions. [2021-08-12 18:55:33,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:55:33,454 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:55:33,454 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:55:33,454 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-08-12 18:55:33,454 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]=== [2021-08-12 18:55:33,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:55:33,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1520667587, now seen corresponding path program 166 times [2021-08-12 18:55:33,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:55:33,455 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350147918] [2021-08-12 18:55:33,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:55:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:55:33,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:55:33,569 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:55:33,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350147918] [2021-08-12 18:55:33,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350147918] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:55:33,569 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:55:33,569 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:55:33,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810734007] [2021-08-12 18:55:33,569 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:55:33,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:55:33,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:55:33,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:55:33,570 INFO L87 Difference]: Start difference. First operand 1535 states and 6056 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:55:37,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:55:37,606 INFO L93 Difference]: Finished difference Result 3176 states and 11698 transitions. [2021-08-12 18:55:37,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:55:37,606 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 [2021-08-12 18:55:37,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:55:37,631 INFO L225 Difference]: With dead ends: 3176 [2021-08-12 18:55:37,631 INFO L226 Difference]: Without dead ends: 2890 [2021-08-12 18:55:37,632 INFO L806 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 [2021-08-12 18:55:37,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2021-08-12 18:55:38,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 1472. [2021-08-12 18:55:38,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1471 states have (on average 3.957171991842284) internal successors, (5821), 1471 states have internal predecessors, (5821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:55:38,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5821 transitions. [2021-08-12 18:55:38,225 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5821 transitions. Word has length 25 [2021-08-12 18:55:38,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:55:38,225 INFO L482 AbstractCegarLoop]: Abstraction has 1472 states and 5821 transitions. [2021-08-12 18:55:38,225 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) [2021-08-12 18:55:38,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5821 transitions. [2021-08-12 18:55:38,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:55:38,228 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:55:38,228 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:55:38,228 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-08-12 18:55:38,228 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]=== [2021-08-12 18:55:38,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:55:38,228 INFO L82 PathProgramCache]: Analyzing trace with hash 500513947, now seen corresponding path program 167 times [2021-08-12 18:55:38,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:55:38,229 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119886385] [2021-08-12 18:55:38,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:55:38,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:55:38,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:55:38,347 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:55:38,347 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119886385] [2021-08-12 18:55:38,347 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119886385] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:55:38,347 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:55:38,347 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:55:38,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628474977] [2021-08-12 18:55:38,347 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:55:38,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:55:38,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:55:38,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:55:38,348 INFO L87 Difference]: Start difference. First operand 1472 states and 5821 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:55:42,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:55:42,290 INFO L93 Difference]: Finished difference Result 3092 states and 11423 transitions. [2021-08-12 18:55:42,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:55:42,290 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 [2021-08-12 18:55:42,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:55:42,311 INFO L225 Difference]: With dead ends: 3092 [2021-08-12 18:55:42,311 INFO L226 Difference]: Without dead ends: 2916 [2021-08-12 18:55:42,311 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 136.7ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:55:42,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2021-08-12 18:55:42,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 1512. [2021-08-12 18:55:42,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1511 states have (on average 3.9450694904037062) internal successors, (5961), 1511 states have internal predecessors, (5961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:55:42,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 5961 transitions. [2021-08-12 18:55:42,793 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 5961 transitions. Word has length 25 [2021-08-12 18:55:42,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:55:42,793 INFO L482 AbstractCegarLoop]: Abstraction has 1512 states and 5961 transitions. [2021-08-12 18:55:42,793 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) [2021-08-12 18:55:42,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 5961 transitions. [2021-08-12 18:55:42,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:55:42,795 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:55:42,795 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:55:42,796 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-08-12 18:55:42,796 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]=== [2021-08-12 18:55:42,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:55:42,796 INFO L82 PathProgramCache]: Analyzing trace with hash 718865533, now seen corresponding path program 168 times [2021-08-12 18:55:42,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:55:42,796 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742518864] [2021-08-12 18:55:42,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:55:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:55:42,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:55:42,899 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:55:42,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742518864] [2021-08-12 18:55:42,899 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742518864] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:55:42,899 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:55:42,899 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:55:42,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046871654] [2021-08-12 18:55:42,899 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:55:42,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:55:42,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:55:42,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:55:42,899 INFO L87 Difference]: Start difference. First operand 1512 states and 5961 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:55:46,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:55:46,773 INFO L93 Difference]: Finished difference Result 3044 states and 11223 transitions. [2021-08-12 18:55:46,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:55:46,773 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:55:46,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:55:46,794 INFO L225 Difference]: With dead ends: 3044 [2021-08-12 18:55:46,794 INFO L226 Difference]: Without dead ends: 2741 [2021-08-12 18:55:46,795 INFO L806 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 [2021-08-12 18:55:46,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2741 states. [2021-08-12 18:55:47,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2741 to 1432. [2021-08-12 18:55:47,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1431 states have (on average 3.9853249475890986) internal successors, (5703), 1431 states have internal predecessors, (5703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:55:47,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 5703 transitions. [2021-08-12 18:55:47,267 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 5703 transitions. Word has length 25 [2021-08-12 18:55:47,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:55:47,268 INFO L482 AbstractCegarLoop]: Abstraction has 1432 states and 5703 transitions. [2021-08-12 18:55:47,268 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:55:47,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 5703 transitions. [2021-08-12 18:55:47,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:55:47,270 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:55:47,270 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:55:47,270 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-08-12 18:55:47,270 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]=== [2021-08-12 18:55:47,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:55:47,270 INFO L82 PathProgramCache]: Analyzing trace with hash -885386243, now seen corresponding path program 169 times [2021-08-12 18:55:47,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:55:47,270 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627081532] [2021-08-12 18:55:47,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:55:47,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:55:47,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:55:47,374 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:55:47,375 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627081532] [2021-08-12 18:55:47,375 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627081532] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:55:47,375 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:55:47,375 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:55:47,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135057947] [2021-08-12 18:55:47,375 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:55:47,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:55:47,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:55:47,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:55:47,375 INFO L87 Difference]: Start difference. First operand 1432 states and 5703 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:55:51,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:55:51,465 INFO L93 Difference]: Finished difference Result 3021 states and 11215 transitions. [2021-08-12 18:55:51,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:55:51,466 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:55:51,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:55:51,495 INFO L225 Difference]: With dead ends: 3021 [2021-08-12 18:55:51,495 INFO L226 Difference]: Without dead ends: 2861 [2021-08-12 18:55:51,496 INFO L806 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 [2021-08-12 18:55:51,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2861 states. [2021-08-12 18:55:52,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2861 to 1488. [2021-08-12 18:55:52,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1487 states have (on average 3.9858776059179557) internal successors, (5927), 1487 states have internal predecessors, (5927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:55:52,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 5927 transitions. [2021-08-12 18:55:52,034 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 5927 transitions. Word has length 25 [2021-08-12 18:55:52,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:55:52,035 INFO L482 AbstractCegarLoop]: Abstraction has 1488 states and 5927 transitions. [2021-08-12 18:55:52,035 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:55:52,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 5927 transitions. [2021-08-12 18:55:52,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:55:52,038 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:55:52,038 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:55:52,038 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-08-12 18:55:52,038 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]=== [2021-08-12 18:55:52,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:55:52,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1893684227, now seen corresponding path program 170 times [2021-08-12 18:55:52,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:55:52,038 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521062252] [2021-08-12 18:55:52,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:55:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:55:52,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:55:52,154 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:55:52,154 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521062252] [2021-08-12 18:55:52,154 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521062252] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:55:52,155 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:55:52,155 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:55:52,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009372700] [2021-08-12 18:55:52,155 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:55:52,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:55:52,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:55:52,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:55:52,155 INFO L87 Difference]: Start difference. First operand 1488 states and 5927 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:55:56,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:55:56,121 INFO L93 Difference]: Finished difference Result 3084 states and 11422 transitions. [2021-08-12 18:55:56,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:55:56,122 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 [2021-08-12 18:55:56,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:55:56,139 INFO L225 Difference]: With dead ends: 3084 [2021-08-12 18:55:56,139 INFO L226 Difference]: Without dead ends: 2829 [2021-08-12 18:55:56,139 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 120.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:55:56,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2829 states. [2021-08-12 18:55:56,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2829 to 1456. [2021-08-12 18:55:56,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1455 states have (on average 3.9855670103092784) internal successors, (5799), 1455 states have internal predecessors, (5799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:55:56,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 5799 transitions. [2021-08-12 18:55:56,618 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 5799 transitions. Word has length 25 [2021-08-12 18:55:56,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:55:56,618 INFO L482 AbstractCegarLoop]: Abstraction has 1456 states and 5799 transitions. [2021-08-12 18:55:56,618 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) [2021-08-12 18:55:56,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 5799 transitions. [2021-08-12 18:55:56,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:55:56,620 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:55:56,620 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:55:56,621 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-08-12 18:55:56,621 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]=== [2021-08-12 18:55:56,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:55:56,621 INFO L82 PathProgramCache]: Analyzing trace with hash 103647263, now seen corresponding path program 171 times [2021-08-12 18:55:56,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:55:56,621 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439823153] [2021-08-12 18:55:56,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:55:56,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:55:56,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:55:56,717 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:55:56,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439823153] [2021-08-12 18:55:56,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439823153] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:55:56,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:55:56,717 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:55:56,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113304950] [2021-08-12 18:55:56,717 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:55:56,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:55:56,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:55:56,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:55:56,718 INFO L87 Difference]: Start difference. First operand 1456 states and 5799 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:56:00,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:56:00,587 INFO L93 Difference]: Finished difference Result 2970 states and 11016 transitions. [2021-08-12 18:56:00,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:56:00,587 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 [2021-08-12 18:56:00,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:56:00,609 INFO L225 Difference]: With dead ends: 2970 [2021-08-12 18:56:00,610 INFO L226 Difference]: Without dead ends: 2810 [2021-08-12 18:56:00,610 INFO L806 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 [2021-08-12 18:56:00,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2021-08-12 18:56:01,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 1472. [2021-08-12 18:56:01,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1471 states have (on average 3.9748470428280083) internal successors, (5847), 1471 states have internal predecessors, (5847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:56:01,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5847 transitions. [2021-08-12 18:56:01,094 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5847 transitions. Word has length 25 [2021-08-12 18:56:01,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:56:01,094 INFO L482 AbstractCegarLoop]: Abstraction has 1472 states and 5847 transitions. [2021-08-12 18:56:01,094 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:56:01,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5847 transitions. [2021-08-12 18:56:01,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:56:01,096 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:56:01,097 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:56:01,097 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-08-12 18:56:01,097 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]=== [2021-08-12 18:56:01,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:56:01,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1111945247, now seen corresponding path program 172 times [2021-08-12 18:56:01,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:56:01,097 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536143002] [2021-08-12 18:56:01,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:56:01,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:56:01,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:56:01,191 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:56:01,191 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536143002] [2021-08-12 18:56:01,191 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536143002] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:56:01,191 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:56:01,191 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:56:01,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239000050] [2021-08-12 18:56:01,191 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:56:01,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:56:01,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:56:01,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:56:01,192 INFO L87 Difference]: Start difference. First operand 1472 states and 5847 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:56:05,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:56:05,073 INFO L93 Difference]: Finished difference Result 2998 states and 11104 transitions. [2021-08-12 18:56:05,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:56:05,073 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 [2021-08-12 18:56:05,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:56:05,094 INFO L225 Difference]: With dead ends: 2998 [2021-08-12 18:56:05,094 INFO L226 Difference]: Without dead ends: 2794 [2021-08-12 18:56:05,095 INFO L806 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 [2021-08-12 18:56:05,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2794 states. [2021-08-12 18:56:05,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2794 to 1456. [2021-08-12 18:56:05,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1455 states have (on average 3.980068728522337) internal successors, (5791), 1455 states have internal predecessors, (5791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:56:05,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 5791 transitions. [2021-08-12 18:56:05,596 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 5791 transitions. Word has length 25 [2021-08-12 18:56:05,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:56:05,597 INFO L482 AbstractCegarLoop]: Abstraction has 1456 states and 5791 transitions. [2021-08-12 18:56:05,597 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:56:05,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 5791 transitions. [2021-08-12 18:56:05,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:56:05,599 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:56:05,599 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:56:05,599 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-08-12 18:56:05,599 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]=== [2021-08-12 18:56:05,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:56:05,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1494775777, now seen corresponding path program 173 times [2021-08-12 18:56:05,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:56:05,600 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429151297] [2021-08-12 18:56:05,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:56:05,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:56:05,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:56:05,701 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:56:05,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429151297] [2021-08-12 18:56:05,701 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429151297] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:56:05,701 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:56:05,702 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:56:05,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493347005] [2021-08-12 18:56:05,702 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:56:05,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:56:05,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:56:05,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:56:05,702 INFO L87 Difference]: Start difference. First operand 1456 states and 5791 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:56:09,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:56:09,780 INFO L93 Difference]: Finished difference Result 3091 states and 11458 transitions. [2021-08-12 18:56:09,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:56:09,781 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:56:09,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:56:09,798 INFO L225 Difference]: With dead ends: 3091 [2021-08-12 18:56:09,798 INFO L226 Difference]: Without dead ends: 2903 [2021-08-12 18:56:09,799 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 119.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:56:09,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2021-08-12 18:56:10,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 1502. [2021-08-12 18:56:10,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 1501 states have (on average 3.9626915389740174) internal successors, (5948), 1501 states have internal predecessors, (5948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:56:10,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 5948 transitions. [2021-08-12 18:56:10,297 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 5948 transitions. Word has length 25 [2021-08-12 18:56:10,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:56:10,297 INFO L482 AbstractCegarLoop]: Abstraction has 1502 states and 5948 transitions. [2021-08-12 18:56:10,298 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) [2021-08-12 18:56:10,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 5948 transitions. [2021-08-12 18:56:10,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:56:10,300 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:56:10,300 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:56:10,300 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-08-12 18:56:10,300 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]=== [2021-08-12 18:56:10,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:56:10,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1847915267, now seen corresponding path program 174 times [2021-08-12 18:56:10,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:56:10,301 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854663891] [2021-08-12 18:56:10,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:56:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:56:10,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:56:10,387 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:56:10,387 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854663891] [2021-08-12 18:56:10,387 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854663891] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:56:10,387 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:56:10,387 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:56:10,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544033118] [2021-08-12 18:56:10,387 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:56:10,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:56:10,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:56:10,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:56:10,387 INFO L87 Difference]: Start difference. First operand 1502 states and 5948 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:56:14,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:56:14,471 INFO L93 Difference]: Finished difference Result 3126 states and 11547 transitions. [2021-08-12 18:56:14,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:56:14,471 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 [2021-08-12 18:56:14,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:56:14,490 INFO L225 Difference]: With dead ends: 3126 [2021-08-12 18:56:14,490 INFO L226 Difference]: Without dead ends: 2841 [2021-08-12 18:56:14,490 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:56:14,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2841 states. [2021-08-12 18:56:14,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2841 to 1440. [2021-08-12 18:56:14,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1439 states have (on average 3.985406532314107) internal successors, (5735), 1439 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) [2021-08-12 18:56:14,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 5735 transitions. [2021-08-12 18:56:14,974 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 5735 transitions. Word has length 25 [2021-08-12 18:56:14,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:56:14,974 INFO L482 AbstractCegarLoop]: Abstraction has 1440 states and 5735 transitions. [2021-08-12 18:56:14,974 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:56:14,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 5735 transitions. [2021-08-12 18:56:14,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:56:14,976 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:56:14,977 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:56:14,977 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-08-12 18:56:14,977 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]=== [2021-08-12 18:56:14,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:56:14,977 INFO L82 PathProgramCache]: Analyzing trace with hash 515731295, now seen corresponding path program 175 times [2021-08-12 18:56:14,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:56:14,977 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106118532] [2021-08-12 18:56:14,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:56:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:56:15,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:56:15,072 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:56:15,072 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106118532] [2021-08-12 18:56:15,072 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106118532] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:56:15,072 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:56:15,072 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:56:15,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146572218] [2021-08-12 18:56:15,072 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:56:15,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:56:15,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:56:15,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:56:15,073 INFO L87 Difference]: Start difference. First operand 1440 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) [2021-08-12 18:56:18,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:56:18,890 INFO L93 Difference]: Finished difference Result 2971 states and 11016 transitions. [2021-08-12 18:56:18,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:56:18,890 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 [2021-08-12 18:56:18,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:56:18,912 INFO L225 Difference]: With dead ends: 2971 [2021-08-12 18:56:18,912 INFO L226 Difference]: Without dead ends: 2811 [2021-08-12 18:56:18,913 INFO L806 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 [2021-08-12 18:56:18,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2811 states. [2021-08-12 18:56:19,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2811 to 1488. [2021-08-12 18:56:19,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1487 states have (on average 3.980497646267653) internal successors, (5919), 1487 states have internal predecessors, (5919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:56:19,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 5919 transitions. [2021-08-12 18:56:19,407 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 5919 transitions. Word has length 25 [2021-08-12 18:56:19,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:56:19,407 INFO L482 AbstractCegarLoop]: Abstraction has 1488 states and 5919 transitions. [2021-08-12 18:56:19,407 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:56:19,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 5919 transitions. [2021-08-12 18:56:19,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:56:19,410 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:56:19,410 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:56:19,410 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-08-12 18:56:19,410 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]=== [2021-08-12 18:56:19,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:56:19,410 INFO L82 PathProgramCache]: Analyzing trace with hash -492566689, now seen corresponding path program 176 times [2021-08-12 18:56:19,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:56:19,410 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642389425] [2021-08-12 18:56:19,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:56:19,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:56:19,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:56:19,509 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:56:19,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642389425] [2021-08-12 18:56:19,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642389425] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:56:19,509 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:56:19,509 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:56:19,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932701039] [2021-08-12 18:56:19,510 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:56:19,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:56:19,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:56:19,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:56:19,510 INFO L87 Difference]: Start difference. First operand 1488 states and 5919 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:56:23,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:56:23,555 INFO L93 Difference]: Finished difference Result 3034 states and 11223 transitions. [2021-08-12 18:56:23,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:56:23,555 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:56:23,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:56:23,577 INFO L225 Difference]: With dead ends: 3034 [2021-08-12 18:56:23,577 INFO L226 Difference]: Without dead ends: 2779 [2021-08-12 18:56:23,577 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 123.6ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:56:23,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2779 states. [2021-08-12 18:56:24,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2779 to 1456. [2021-08-12 18:56:24,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1455 states have (on average 3.980068728522337) internal successors, (5791), 1455 states have internal predecessors, (5791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:56:24,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 5791 transitions. [2021-08-12 18:56:24,072 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 5791 transitions. Word has length 25 [2021-08-12 18:56:24,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:56:24,073 INFO L482 AbstractCegarLoop]: Abstraction has 1456 states and 5791 transitions. [2021-08-12 18:56:24,073 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) [2021-08-12 18:56:24,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 5791 transitions. [2021-08-12 18:56:24,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:56:24,075 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:56:24,075 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:56:24,075 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-08-12 18:56:24,075 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]=== [2021-08-12 18:56:24,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:56:24,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1556289311, now seen corresponding path program 177 times [2021-08-12 18:56:24,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:56:24,076 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774655143] [2021-08-12 18:56:24,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:56:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:56:24,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:56:24,163 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:56:24,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774655143] [2021-08-12 18:56:24,163 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774655143] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:56:24,163 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:56:24,163 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:56:24,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670768871] [2021-08-12 18:56:24,164 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:56:24,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:56:24,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:56:24,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:56:24,164 INFO L87 Difference]: Start difference. First operand 1456 states and 5791 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:56:27,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:56:27,873 INFO L93 Difference]: Finished difference Result 2876 states and 10665 transitions. [2021-08-12 18:56:27,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:56:27,874 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:56:27,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:56:27,892 INFO L225 Difference]: With dead ends: 2876 [2021-08-12 18:56:27,892 INFO L226 Difference]: Without dead ends: 2716 [2021-08-12 18:56:27,892 INFO L806 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 [2021-08-12 18:56:27,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2716 states. [2021-08-12 18:56:28,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2716 to 1472. [2021-08-12 18:56:28,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1471 states have (on average 3.9694085656016314) internal successors, (5839), 1471 states have internal predecessors, (5839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:56:28,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5839 transitions. [2021-08-12 18:56:28,377 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5839 transitions. Word has length 25 [2021-08-12 18:56:28,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:56:28,377 INFO L482 AbstractCegarLoop]: Abstraction has 1472 states and 5839 transitions. [2021-08-12 18:56:28,377 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:56:28,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5839 transitions. [2021-08-12 18:56:28,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:56:28,379 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:56:28,379 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:56:28,379 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-08-12 18:56:28,379 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]=== [2021-08-12 18:56:28,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:56:28,380 INFO L82 PathProgramCache]: Analyzing trace with hash -385982689, now seen corresponding path program 178 times [2021-08-12 18:56:28,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:56:28,380 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661384323] [2021-08-12 18:56:28,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:56:28,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:56:28,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:56:28,476 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:56:28,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661384323] [2021-08-12 18:56:28,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661384323] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:56:28,476 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:56:28,476 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:56:28,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047287769] [2021-08-12 18:56:28,476 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:56:28,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:56:28,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:56:28,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:56:28,477 INFO L87 Difference]: Start difference. First operand 1472 states and 5839 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:56:31,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:56:31,781 INFO L93 Difference]: Finished difference Result 2764 states and 10328 transitions. [2021-08-12 18:56:31,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:56:31,781 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:56:31,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:56:31,799 INFO L225 Difference]: With dead ends: 2764 [2021-08-12 18:56:31,799 INFO L226 Difference]: Without dead ends: 2572 [2021-08-12 18:56:31,800 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:56:31,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2572 states. [2021-08-12 18:56:32,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2572 to 1456. [2021-08-12 18:56:32,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1455 states have (on average 3.9745704467353953) internal successors, (5783), 1455 states have internal predecessors, (5783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:56:32,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 5783 transitions. [2021-08-12 18:56:32,298 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 5783 transitions. Word has length 25 [2021-08-12 18:56:32,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:56:32,298 INFO L482 AbstractCegarLoop]: Abstraction has 1456 states and 5783 transitions. [2021-08-12 18:56:32,298 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) [2021-08-12 18:56:32,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 5783 transitions. [2021-08-12 18:56:32,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:56:32,301 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:56:32,301 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:56:32,301 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-08-12 18:56:32,301 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]=== [2021-08-12 18:56:32,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:56:32,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1302263583, now seen corresponding path program 179 times [2021-08-12 18:56:32,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:56:32,301 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263761875] [2021-08-12 18:56:32,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:56:32,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:56:32,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:56:32,417 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:56:32,417 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263761875] [2021-08-12 18:56:32,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263761875] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:56:32,417 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:56:32,417 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:56:32,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364564481] [2021-08-12 18:56:32,417 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:56:32,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:56:32,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:56:32,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:56:32,418 INFO L87 Difference]: Start difference. First operand 1456 states and 5783 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:56:36,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:56:36,321 INFO L93 Difference]: Finished difference Result 3011 states and 11156 transitions. [2021-08-12 18:56:36,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:56:36,321 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:56:36,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:56:36,343 INFO L225 Difference]: With dead ends: 3011 [2021-08-12 18:56:36,343 INFO L226 Difference]: Without dead ends: 2835 [2021-08-12 18:56:36,344 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 133.5ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:56:36,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2021-08-12 18:56:36,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 1496. [2021-08-12 18:56:36,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 1495 states have (on average 3.9618729096989966) internal successors, (5923), 1495 states have internal predecessors, (5923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:56:36,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 5923 transitions. [2021-08-12 18:56:36,859 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 5923 transitions. Word has length 25 [2021-08-12 18:56:36,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:56:36,859 INFO L482 AbstractCegarLoop]: Abstraction has 1496 states and 5923 transitions. [2021-08-12 18:56:36,860 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) [2021-08-12 18:56:36,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 5923 transitions. [2021-08-12 18:56:36,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:56:36,862 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:56:36,862 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:56:36,862 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-08-12 18:56:36,862 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]=== [2021-08-12 18:56:36,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:56:36,862 INFO L82 PathProgramCache]: Analyzing trace with hash -353260803, now seen corresponding path program 180 times [2021-08-12 18:56:36,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:56:36,862 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021773963] [2021-08-12 18:56:36,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:56:36,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:56:36,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:56:36,977 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:56:36,977 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021773963] [2021-08-12 18:56:36,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021773963] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:56:36,977 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:56:36,978 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:56:36,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340505407] [2021-08-12 18:56:36,978 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:56:36,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:56:36,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:56:36,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:56:36,978 INFO L87 Difference]: Start difference. First operand 1496 states and 5923 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:56:40,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:56:40,829 INFO L93 Difference]: Finished difference Result 2963 states and 10956 transitions. [2021-08-12 18:56:40,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:56:40,830 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:56:40,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:56:40,850 INFO L225 Difference]: With dead ends: 2963 [2021-08-12 18:56:40,851 INFO L226 Difference]: Without dead ends: 2684 [2021-08-12 18:56:40,851 INFO L806 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 [2021-08-12 18:56:40,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2684 states. [2021-08-12 18:56:41,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2684 to 1440. [2021-08-12 18:56:41,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1439 states have (on average 3.9798471160528144) internal successors, (5727), 1439 states have internal predecessors, (5727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:56:41,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 5727 transitions. [2021-08-12 18:56:41,351 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 5727 transitions. Word has length 25 [2021-08-12 18:56:41,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:56:41,351 INFO L482 AbstractCegarLoop]: Abstraction has 1440 states and 5727 transitions. [2021-08-12 18:56:41,351 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) [2021-08-12 18:56:41,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 5727 transitions. [2021-08-12 18:56:41,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:56:41,354 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:56:41,354 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:56:41,354 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-08-12 18:56:41,354 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]=== [2021-08-12 18:56:41,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:56:41,355 INFO L82 PathProgramCache]: Analyzing trace with hash -645911871, now seen corresponding path program 181 times [2021-08-12 18:56:41,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:56:41,355 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919763587] [2021-08-12 18:56:41,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:56:41,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:56:41,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:56:41,473 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:56:41,473 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919763587] [2021-08-12 18:56:41,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919763587] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:56:41,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:56:41,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:56:41,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235897024] [2021-08-12 18:56:41,474 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:56:41,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:56:41,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:56:41,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:56:41,474 INFO L87 Difference]: Start difference. First operand 1440 states and 5727 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:56:45,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:56:45,246 INFO L93 Difference]: Finished difference Result 2861 states and 10606 transitions. [2021-08-12 18:56:45,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:56:45,247 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:56:45,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:56:45,268 INFO L225 Difference]: With dead ends: 2861 [2021-08-12 18:56:45,268 INFO L226 Difference]: Without dead ends: 2701 [2021-08-12 18:56:45,269 INFO L806 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 [2021-08-12 18:56:45,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2021-08-12 18:56:45,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 1464. [2021-08-12 18:56:45,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1463 states have (on average 3.971975393028025) internal successors, (5811), 1463 states have internal predecessors, (5811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:56:45,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 5811 transitions. [2021-08-12 18:56:45,782 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 5811 transitions. Word has length 25 [2021-08-12 18:56:45,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:56:45,782 INFO L482 AbstractCegarLoop]: Abstraction has 1464 states and 5811 transitions. [2021-08-12 18:56:45,782 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:56:45,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 5811 transitions. [2021-08-12 18:56:45,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:56:45,785 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:56:45,785 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:56:45,785 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-08-12 18:56:45,785 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]=== [2021-08-12 18:56:45,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:56:45,785 INFO L82 PathProgramCache]: Analyzing trace with hash 362386113, now seen corresponding path program 182 times [2021-08-12 18:56:45,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:56:45,785 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222153968] [2021-08-12 18:56:45,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:56:45,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:56:45,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:56:45,872 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:56:45,872 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222153968] [2021-08-12 18:56:45,872 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222153968] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:56:45,872 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:56:45,872 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:56:45,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53411178] [2021-08-12 18:56:45,873 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:56:45,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:56:45,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:56:45,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:56:45,873 INFO L87 Difference]: Start difference. First operand 1464 states and 5811 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:56:49,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:56:49,701 INFO L93 Difference]: Finished difference Result 2889 states and 10694 transitions. [2021-08-12 18:56:49,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:56:49,702 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:56:49,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:56:49,722 INFO L225 Difference]: With dead ends: 2889 [2021-08-12 18:56:49,722 INFO L226 Difference]: Without dead ends: 2685 [2021-08-12 18:56:49,723 INFO L806 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 [2021-08-12 18:56:49,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2685 states. [2021-08-12 18:56:50,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2685 to 1448. [2021-08-12 18:56:50,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 3.977194194885971) internal successors, (5755), 1447 states have internal predecessors, (5755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:56:50,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5755 transitions. [2021-08-12 18:56:50,219 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5755 transitions. Word has length 25 [2021-08-12 18:56:50,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:56:50,219 INFO L482 AbstractCegarLoop]: Abstraction has 1448 states and 5755 transitions. [2021-08-12 18:56:50,219 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:56:50,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5755 transitions. [2021-08-12 18:56:50,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:56:50,222 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:56:50,222 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:56:50,222 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-08-12 18:56:50,222 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]=== [2021-08-12 18:56:50,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:56:50,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1532975775, now seen corresponding path program 183 times [2021-08-12 18:56:50,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:56:50,223 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24835325] [2021-08-12 18:56:50,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:56:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:56:50,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:56:50,302 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:56:50,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24835325] [2021-08-12 18:56:50,302 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24835325] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:56:50,302 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:56:50,302 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:56:50,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208420492] [2021-08-12 18:56:50,302 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:56:50,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:56:50,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:56:50,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:56:50,303 INFO L87 Difference]: Start difference. First operand 1448 states and 5755 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:56:54,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:56:54,071 INFO L93 Difference]: Finished difference Result 2817 states and 10446 transitions. [2021-08-12 18:56:54,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:56:54,071 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 [2021-08-12 18:56:54,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:56:54,093 INFO L225 Difference]: With dead ends: 2817 [2021-08-12 18:56:54,093 INFO L226 Difference]: Without dead ends: 2657 [2021-08-12 18:56:54,094 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 85.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:56:54,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2657 states. [2021-08-12 18:56:54,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2657 to 1464. [2021-08-12 18:56:54,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1463 states have (on average 3.9665071770334928) internal successors, (5803), 1463 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) [2021-08-12 18:56:54,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 5803 transitions. [2021-08-12 18:56:54,589 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 5803 transitions. Word has length 25 [2021-08-12 18:56:54,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:56:54,590 INFO L482 AbstractCegarLoop]: Abstraction has 1464 states and 5803 transitions. [2021-08-12 18:56:54,590 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) [2021-08-12 18:56:54,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 5803 transitions. [2021-08-12 18:56:54,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:56:54,592 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:56:54,592 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:56:54,592 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-08-12 18:56:54,592 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]=== [2021-08-12 18:56:54,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:56:54,592 INFO L82 PathProgramCache]: Analyzing trace with hash 887444161, now seen corresponding path program 184 times [2021-08-12 18:56:54,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:56:54,593 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775008789] [2021-08-12 18:56:54,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:56:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:56:54,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:56:54,671 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:56:54,672 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775008789] [2021-08-12 18:56:54,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775008789] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:56:54,672 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:56:54,672 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:56:54,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615136897] [2021-08-12 18:56:54,672 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:56:54,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:56:54,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:56:54,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:56:54,672 INFO L87 Difference]: Start difference. First operand 1464 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) [2021-08-12 18:56:58,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:56:58,042 INFO L93 Difference]: Finished difference Result 2705 states and 10109 transitions. [2021-08-12 18:56:58,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:56:58,043 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 [2021-08-12 18:56:58,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:56:58,059 INFO L225 Difference]: With dead ends: 2705 [2021-08-12 18:56:58,059 INFO L226 Difference]: Without dead ends: 2513 [2021-08-12 18:56:58,060 INFO L806 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 [2021-08-12 18:56:58,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2513 states. [2021-08-12 18:56:58,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2513 to 1448. [2021-08-12 18:56:58,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 3.9716655148583278) internal successors, (5747), 1447 states have internal predecessors, (5747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:56:58,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5747 transitions. [2021-08-12 18:56:58,566 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5747 transitions. Word has length 25 [2021-08-12 18:56:58,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:56:58,566 INFO L482 AbstractCegarLoop]: Abstraction has 1448 states and 5747 transitions. [2021-08-12 18:56:58,566 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) [2021-08-12 18:56:58,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5747 transitions. [2021-08-12 18:56:58,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:56:58,568 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:56:58,568 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:56:58,568 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-08-12 18:56:58,568 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]=== [2021-08-12 18:56:58,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:56:58,569 INFO L82 PathProgramCache]: Analyzing trace with hash -2145199423, now seen corresponding path program 185 times [2021-08-12 18:56:58,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:56:58,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775624806] [2021-08-12 18:56:58,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:56:58,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:56:58,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:56:58,646 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:56:58,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775624806] [2021-08-12 18:56:58,646 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775624806] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:56:58,646 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:56:58,646 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:56:58,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912385406] [2021-08-12 18:56:58,646 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:56:58,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:56:58,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:56:58,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:56:58,647 INFO L87 Difference]: Start difference. First operand 1448 states and 5747 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:57:02,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:57:02,428 INFO L93 Difference]: Finished difference Result 2853 states and 10578 transitions. [2021-08-12 18:57:02,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:57:02,428 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:57:02,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:57:02,448 INFO L225 Difference]: With dead ends: 2853 [2021-08-12 18:57:02,448 INFO L226 Difference]: Without dead ends: 2665 [2021-08-12 18:57:02,449 INFO L806 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 [2021-08-12 18:57:02,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2021-08-12 18:57:02,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 1472. [2021-08-12 18:57:02,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1471 states have (on average 3.9585316111488784) internal successors, (5823), 1471 states have internal predecessors, (5823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:57:02,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5823 transitions. [2021-08-12 18:57:02,960 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5823 transitions. Word has length 25 [2021-08-12 18:57:02,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:57:02,960 INFO L482 AbstractCegarLoop]: Abstraction has 1472 states and 5823 transitions. [2021-08-12 18:57:02,960 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:57:02,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5823 transitions. [2021-08-12 18:57:02,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:57:02,962 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:57:02,962 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:57:02,962 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-08-12 18:57:02,962 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]=== [2021-08-12 18:57:02,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:57:02,963 INFO L82 PathProgramCache]: Analyzing trace with hash 757623327, now seen corresponding path program 186 times [2021-08-12 18:57:02,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:57:02,963 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187713125] [2021-08-12 18:57:02,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:57:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:57:03,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:57:03,039 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:57:03,039 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187713125] [2021-08-12 18:57:03,039 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187713125] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:57:03,039 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:57:03,040 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:57:03,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366196481] [2021-08-12 18:57:03,040 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:57:03,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:57:03,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:57:03,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:57:03,040 INFO L87 Difference]: Start difference. First operand 1472 states and 5823 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:57:06,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:57:06,418 INFO L93 Difference]: Finished difference Result 2713 states and 10129 transitions. [2021-08-12 18:57:06,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:57:06,419 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:57:06,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:57:06,436 INFO L225 Difference]: With dead ends: 2713 [2021-08-12 18:57:06,436 INFO L226 Difference]: Without dead ends: 2505 [2021-08-12 18:57:06,436 INFO L806 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 [2021-08-12 18:57:06,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2505 states. [2021-08-12 18:57:06,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2505 to 1440. [2021-08-12 18:57:06,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1439 states have (on average 3.977067407922168) internal successors, (5723), 1439 states have internal predecessors, (5723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:57:06,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 5723 transitions. [2021-08-12 18:57:06,942 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 5723 transitions. Word has length 25 [2021-08-12 18:57:06,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:57:06,943 INFO L482 AbstractCegarLoop]: Abstraction has 1440 states and 5723 transitions. [2021-08-12 18:57:06,943 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:57:06,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 5723 transitions. [2021-08-12 18:57:06,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:57:06,945 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:57:06,945 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:57:06,946 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-08-12 18:57:06,946 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]=== [2021-08-12 18:57:06,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:57:06,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1056797377, now seen corresponding path program 187 times [2021-08-12 18:57:06,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:57:06,946 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200294294] [2021-08-12 18:57:06,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:57:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:57:07,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:57:07,046 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:57:07,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200294294] [2021-08-12 18:57:07,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200294294] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:57:07,046 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:57:07,046 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:57:07,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500022066] [2021-08-12 18:57:07,046 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:57:07,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:57:07,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:57:07,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:57:07,047 INFO L87 Difference]: Start difference. First operand 1440 states and 5723 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:57:11,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:57:11,126 INFO L93 Difference]: Finished difference Result 3058 states and 11372 transitions. [2021-08-12 18:57:11,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:57:11,127 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:57:11,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:57:11,150 INFO L225 Difference]: With dead ends: 3058 [2021-08-12 18:57:11,150 INFO L226 Difference]: Without dead ends: 2870 [2021-08-12 18:57:11,151 INFO L806 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 [2021-08-12 18:57:11,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2870 states. [2021-08-12 18:57:11,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 1484. [2021-08-12 18:57:11,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1484 states, 1483 states have (on average 3.9723533378287255) internal successors, (5891), 1483 states have internal predecessors, (5891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:57:11,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1484 states to 1484 states and 5891 transitions. [2021-08-12 18:57:11,668 INFO L78 Accepts]: Start accepts. Automaton has 1484 states and 5891 transitions. Word has length 25 [2021-08-12 18:57:11,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:57:11,668 INFO L482 AbstractCegarLoop]: Abstraction has 1484 states and 5891 transitions. [2021-08-12 18:57:11,668 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:57:11,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1484 states and 5891 transitions. [2021-08-12 18:57:11,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:57:11,671 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:57:11,671 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:57:11,671 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-08-12 18:57:11,671 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]=== [2021-08-12 18:57:11,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:57:11,672 INFO L82 PathProgramCache]: Analyzing trace with hash -335347169, now seen corresponding path program 188 times [2021-08-12 18:57:11,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:57:11,672 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838481955] [2021-08-12 18:57:11,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:57:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:57:11,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:57:11,747 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:57:11,747 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838481955] [2021-08-12 18:57:11,747 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838481955] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:57:11,748 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:57:11,748 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:57:11,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526825458] [2021-08-12 18:57:11,748 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:57:11,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:57:11,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:57:11,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:57:11,748 INFO L87 Difference]: Start difference. First operand 1484 states and 5891 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:57:15,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:57:15,818 INFO L93 Difference]: Finished difference Result 3046 states and 11308 transitions. [2021-08-12 18:57:15,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:57:15,819 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:57:15,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:57:15,839 INFO L225 Difference]: With dead ends: 3046 [2021-08-12 18:57:15,839 INFO L226 Difference]: Without dead ends: 2846 [2021-08-12 18:57:15,840 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 96.4ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:57:15,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2021-08-12 18:57:16,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 1460. [2021-08-12 18:57:16,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1459 states have (on average 3.977381768334476) internal successors, (5803), 1459 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) [2021-08-12 18:57:16,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5803 transitions. [2021-08-12 18:57:16,363 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5803 transitions. Word has length 25 [2021-08-12 18:57:16,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:57:16,363 INFO L482 AbstractCegarLoop]: Abstraction has 1460 states and 5803 transitions. [2021-08-12 18:57:16,363 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) [2021-08-12 18:57:16,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5803 transitions. [2021-08-12 18:57:16,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:57:16,366 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:57:16,366 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:57:16,366 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-08-12 18:57:16,366 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]=== [2021-08-12 18:57:16,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:57:16,366 INFO L82 PathProgramCache]: Analyzing trace with hash -764238049, now seen corresponding path program 189 times [2021-08-12 18:57:16,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:57:16,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222723859] [2021-08-12 18:57:16,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:57:16,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:57:16,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:57:16,454 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:57:16,454 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222723859] [2021-08-12 18:57:16,454 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222723859] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:57:16,454 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:57:16,454 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:57:16,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462832619] [2021-08-12 18:57:16,454 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:57:16,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:57:16,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:57:16,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:57:16,455 INFO L87 Difference]: Start difference. First operand 1460 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) [2021-08-12 18:57:20,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:57:20,741 INFO L93 Difference]: Finished difference Result 3081 states and 11419 transitions. [2021-08-12 18:57:20,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:57:20,741 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 [2021-08-12 18:57:20,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:57:20,765 INFO L225 Difference]: With dead ends: 3081 [2021-08-12 18:57:20,766 INFO L226 Difference]: Without dead ends: 2893 [2021-08-12 18:57:20,766 INFO L806 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 [2021-08-12 18:57:20,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2021-08-12 18:57:21,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 1506. [2021-08-12 18:57:21,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 3.9601328903654487) internal successors, (5960), 1505 states have internal predecessors, (5960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:57:21,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 5960 transitions. [2021-08-12 18:57:21,287 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 5960 transitions. Word has length 25 [2021-08-12 18:57:21,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:57:21,287 INFO L482 AbstractCegarLoop]: Abstraction has 1506 states and 5960 transitions. [2021-08-12 18:57:21,287 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:57:21,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 5960 transitions. [2021-08-12 18:57:21,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:57:21,289 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:57:21,289 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:57:21,289 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-08-12 18:57:21,289 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]=== [2021-08-12 18:57:21,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:57:21,289 INFO L82 PathProgramCache]: Analyzing trace with hash 604522399, now seen corresponding path program 190 times [2021-08-12 18:57:21,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:57:21,290 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036249997] [2021-08-12 18:57:21,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:57:21,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:57:21,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:57:21,368 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:57:21,368 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036249997] [2021-08-12 18:57:21,368 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036249997] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:57:21,368 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:57:21,368 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:57:21,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920715872] [2021-08-12 18:57:21,368 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:57:21,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:57:21,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:57:21,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:57:21,368 INFO L87 Difference]: Start difference. First operand 1506 states and 5960 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:57:25,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:57:25,751 INFO L93 Difference]: Finished difference Result 3116 states and 11508 transitions. [2021-08-12 18:57:25,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:57:25,752 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 [2021-08-12 18:57:25,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:57:25,772 INFO L225 Difference]: With dead ends: 3116 [2021-08-12 18:57:25,772 INFO L226 Difference]: Without dead ends: 2847 [2021-08-12 18:57:25,773 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 84.8ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:57:25,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2847 states. [2021-08-12 18:57:26,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2847 to 1460. [2021-08-12 18:57:26,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1459 states have (on average 3.9636737491432488) internal successors, (5783), 1459 states have internal predecessors, (5783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:57:26,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5783 transitions. [2021-08-12 18:57:26,287 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5783 transitions. Word has length 25 [2021-08-12 18:57:26,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:57:26,287 INFO L482 AbstractCegarLoop]: Abstraction has 1460 states and 5783 transitions. [2021-08-12 18:57:26,287 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:57:26,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5783 transitions. [2021-08-12 18:57:26,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:57:26,289 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:57:26,289 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:57:26,289 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-08-12 18:57:26,289 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]=== [2021-08-12 18:57:26,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:57:26,289 INFO L82 PathProgramCache]: Analyzing trace with hash -399980675, now seen corresponding path program 191 times [2021-08-12 18:57:26,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:57:26,290 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143391186] [2021-08-12 18:57:26,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:57:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:57:26,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:57:26,388 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:57:26,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143391186] [2021-08-12 18:57:26,388 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143391186] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:57:26,388 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:57:26,388 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:57:26,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134325437] [2021-08-12 18:57:26,388 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:57:26,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:57:26,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:57:26,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:57:26,389 INFO L87 Difference]: Start difference. First operand 1460 states and 5783 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:57:30,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:57:30,569 INFO L93 Difference]: Finished difference Result 3051 states and 11296 transitions. [2021-08-12 18:57:30,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:57:30,569 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 [2021-08-12 18:57:30,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:57:30,591 INFO L225 Difference]: With dead ends: 3051 [2021-08-12 18:57:30,591 INFO L226 Difference]: Without dead ends: 2875 [2021-08-12 18:57:30,592 INFO L806 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 [2021-08-12 18:57:30,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2875 states. [2021-08-12 18:57:31,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2875 to 1500. [2021-08-12 18:57:31,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 1499 states have (on average 3.95130086724483) internal successors, (5923), 1499 states have internal predecessors, (5923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:57:31,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 5923 transitions. [2021-08-12 18:57:31,118 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 5923 transitions. Word has length 25 [2021-08-12 18:57:31,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:57:31,118 INFO L482 AbstractCegarLoop]: Abstraction has 1500 states and 5923 transitions. [2021-08-12 18:57:31,118 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) [2021-08-12 18:57:31,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 5923 transitions. [2021-08-12 18:57:31,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:57:31,120 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:57:31,120 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:57:31,120 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-08-12 18:57:31,120 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]=== [2021-08-12 18:57:31,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:57:31,121 INFO L82 PathProgramCache]: Analyzing trace with hash -181629089, now seen corresponding path program 192 times [2021-08-12 18:57:31,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:57:31,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172816135] [2021-08-12 18:57:31,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:57:31,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:57:31,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:57:31,232 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:57:31,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172816135] [2021-08-12 18:57:31,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172816135] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:57:31,232 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:57:31,232 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:57:31,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609666460] [2021-08-12 18:57:31,232 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:57:31,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:57:31,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:57:31,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:57:31,233 INFO L87 Difference]: Start difference. First operand 1500 states and 5923 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:57:35,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:57:35,385 INFO L93 Difference]: Finished difference Result 3003 states and 11096 transitions. [2021-08-12 18:57:35,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:57:35,385 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 [2021-08-12 18:57:35,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:57:35,407 INFO L225 Difference]: With dead ends: 3003 [2021-08-12 18:57:35,407 INFO L226 Difference]: Without dead ends: 2712 [2021-08-12 18:57:35,408 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 117.2ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:57:35,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2712 states. [2021-08-12 18:57:35,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2712 to 1432. [2021-08-12 18:57:35,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1431 states have (on average 3.9825296995108315) internal successors, (5699), 1431 states have internal predecessors, (5699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:57:35,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 5699 transitions. [2021-08-12 18:57:35,966 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 5699 transitions. Word has length 25 [2021-08-12 18:57:35,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:57:35,967 INFO L482 AbstractCegarLoop]: Abstraction has 1432 states and 5699 transitions. [2021-08-12 18:57:35,967 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:57:35,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 5699 transitions. [2021-08-12 18:57:35,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:57:35,969 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:57:35,969 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:57:35,969 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-08-12 18:57:35,969 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]=== [2021-08-12 18:57:35,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:57:35,969 INFO L82 PathProgramCache]: Analyzing trace with hash 498166553, now seen corresponding path program 193 times [2021-08-12 18:57:35,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:57:35,969 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099617782] [2021-08-12 18:57:35,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:57:35,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:57:36,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:57:36,064 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:57:36,064 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099617782] [2021-08-12 18:57:36,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099617782] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:57:36,065 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:57:36,065 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:57:36,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052317918] [2021-08-12 18:57:36,065 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:57:36,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:57:36,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:57:36,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:57:36,065 INFO L87 Difference]: Start difference. First operand 1432 states and 5699 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:57:40,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:57:40,128 INFO L93 Difference]: Finished difference Result 2798 states and 10357 transitions. [2021-08-12 18:57:40,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:57:40,129 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:57:40,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:57:40,146 INFO L225 Difference]: With dead ends: 2798 [2021-08-12 18:57:40,147 INFO L226 Difference]: Without dead ends: 2638 [2021-08-12 18:57:40,148 INFO L806 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 [2021-08-12 18:57:40,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2638 states. [2021-08-12 18:57:40,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2638 to 1460. [2021-08-12 18:57:40,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1459 states have (on average 3.977381768334476) internal successors, (5803), 1459 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) [2021-08-12 18:57:40,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5803 transitions. [2021-08-12 18:57:40,671 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5803 transitions. Word has length 25 [2021-08-12 18:57:40,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:57:40,671 INFO L482 AbstractCegarLoop]: Abstraction has 1460 states and 5803 transitions. [2021-08-12 18:57:40,671 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:57:40,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5803 transitions. [2021-08-12 18:57:40,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:57:40,673 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:57:40,673 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:57:40,673 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-08-12 18:57:40,673 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]=== [2021-08-12 18:57:40,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:57:40,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1091768197, now seen corresponding path program 194 times [2021-08-12 18:57:40,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:57:40,674 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955001799] [2021-08-12 18:57:40,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:57:40,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:57:40,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:57:40,766 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:57:40,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955001799] [2021-08-12 18:57:40,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955001799] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:57:40,766 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:57:40,766 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:57:40,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249851653] [2021-08-12 18:57:40,766 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:57:40,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:57:40,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:57:40,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:57:40,766 INFO L87 Difference]: Start difference. First operand 1460 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) [2021-08-12 18:57:44,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:57:44,879 INFO L93 Difference]: Finished difference Result 2828 states and 10450 transitions. [2021-08-12 18:57:44,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:57:44,879 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:57:44,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:57:44,899 INFO L225 Difference]: With dead ends: 2828 [2021-08-12 18:57:44,899 INFO L226 Difference]: Without dead ends: 2622 [2021-08-12 18:57:44,900 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 114.0ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:57:44,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2622 states. [2021-08-12 18:57:45,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2622 to 1444. [2021-08-12 18:57:45,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 3.9826749826749825) internal successors, (5747), 1443 states have internal predecessors, (5747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:57:45,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5747 transitions. [2021-08-12 18:57:45,430 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5747 transitions. Word has length 25 [2021-08-12 18:57:45,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:57:45,431 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 5747 transitions. [2021-08-12 18:57:45,431 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) [2021-08-12 18:57:45,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5747 transitions. [2021-08-12 18:57:45,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:57:45,433 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:57:45,433 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:57:45,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-08-12 18:57:45,434 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]=== [2021-08-12 18:57:45,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:57:45,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1579229179, now seen corresponding path program 195 times [2021-08-12 18:57:45,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:57:45,434 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340211918] [2021-08-12 18:57:45,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:57:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:57:45,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:57:45,542 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:57:45,542 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340211918] [2021-08-12 18:57:45,542 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340211918] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:57:45,542 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:57:45,542 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:57:45,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327964748] [2021-08-12 18:57:45,542 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:57:45,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:57:45,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:57:45,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:57:45,542 INFO L87 Difference]: Start difference. First operand 1444 states and 5747 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:57:49,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:57:49,619 INFO L93 Difference]: Finished difference Result 2796 states and 10344 transitions. [2021-08-12 18:57:49,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:57:49,619 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 [2021-08-12 18:57:49,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:57:49,640 INFO L225 Difference]: With dead ends: 2796 [2021-08-12 18:57:49,640 INFO L226 Difference]: Without dead ends: 2636 [2021-08-12 18:57:49,641 INFO L806 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 [2021-08-12 18:57:49,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2636 states. [2021-08-12 18:57:50,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2636 to 1460. [2021-08-12 18:57:50,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1459 states have (on average 3.971898560657985) internal successors, (5795), 1459 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) [2021-08-12 18:57:50,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5795 transitions. [2021-08-12 18:57:50,183 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5795 transitions. Word has length 25 [2021-08-12 18:57:50,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:57:50,183 INFO L482 AbstractCegarLoop]: Abstraction has 1460 states and 5795 transitions. [2021-08-12 18:57:50,183 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) [2021-08-12 18:57:50,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5795 transitions. [2021-08-12 18:57:50,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:57:50,185 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:57:50,185 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:57:50,185 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2021-08-12 18:57:50,186 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]=== [2021-08-12 18:57:50,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:57:50,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1707440133, now seen corresponding path program 196 times [2021-08-12 18:57:50,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:57:50,186 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630438411] [2021-08-12 18:57:50,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:57:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:57:50,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:57:50,279 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:57:50,279 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630438411] [2021-08-12 18:57:50,279 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630438411] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:57:50,279 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:57:50,279 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:57:50,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374535719] [2021-08-12 18:57:50,279 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:57:50,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:57:50,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:57:50,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:57:50,280 INFO L87 Difference]: Start difference. First operand 1460 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) [2021-08-12 18:57:54,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 18:57:54,563 INFO L93 Difference]: Finished difference Result 2824 states and 10432 transitions. [2021-08-12 18:57:54,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:57:54,563 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-12 18:57:54,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 18:57:54,584 INFO L225 Difference]: With dead ends: 2824 [2021-08-12 18:57:54,584 INFO L226 Difference]: Without dead ends: 2620 [2021-08-12 18:57:54,584 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 113.9ms TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-08-12 18:57:54,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2620 states. [2021-08-12 18:57:55,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2620 to 1444. [2021-08-12 18:57:55,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 3.9771309771309773) internal successors, (5739), 1443 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) [2021-08-12 18:57:55,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5739 transitions. [2021-08-12 18:57:55,113 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5739 transitions. Word has length 25 [2021-08-12 18:57:55,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 18:57:55,113 INFO L482 AbstractCegarLoop]: Abstraction has 1444 states and 5739 transitions. [2021-08-12 18:57:55,113 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-12 18:57:55,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5739 transitions. [2021-08-12 18:57:55,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-12 18:57:55,116 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 18:57:55,116 INFO L550 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-12 18:57:55,116 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2021-08-12 18:57:55,116 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]=== [2021-08-12 18:57:55,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 18:57:55,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1298576163, now seen corresponding path program 197 times [2021-08-12 18:57:55,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 18:57:55,116 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656045501] [2021-08-12 18:57:55,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 18:57:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 18:57:55,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 18:57:55,226 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 18:57:55,226 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656045501] [2021-08-12 18:57:55,226 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656045501] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 18:57:55,226 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 18:57:55,226 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-12 18:57:55,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418618213] [2021-08-12 18:57:55,226 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-12 18:57:55,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 18:57:55,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-12 18:57:55,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-12 18:57:55,227 INFO L87 Difference]: Start difference. First operand 1444 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) Received shutdown request... [2021-08-12 18:57:58,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-12 18:57:58,725 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2021-08-12 18:57:58,725 WARN L547 AbstractCegarLoop]: Verification canceled [2021-08-12 18:57:58,728 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-12 18:57:58,730 WARN L188 ceAbstractionStarter]: Timeout [2021-08-12 18:57:58,730 INFO L202 PluginConnector]: Adding new model example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.08 06:57:58 BasicIcfg [2021-08-12 18:57:58,730 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-12 18:57:58,730 INFO L168 Benchmark]: Toolchain (without parser) took 560124.79 ms. Allocated memory was 180.4 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 161.5 MB in the beginning and 1.0 GB in the end (delta: -852.5 MB). Peak memory consumption was 896.2 MB. Max. memory is 8.0 GB. [2021-08-12 18:57:58,730 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.17 ms. Allocated memory is still 180.4 MB. Free memory is still 162.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-12 18:57:58,730 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.96 ms. Allocated memory is still 180.4 MB. Free memory was 161.4 MB in the beginning and 160.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-12 18:57:58,731 INFO L168 Benchmark]: Boogie Preprocessor took 11.43 ms. Allocated memory is still 180.4 MB. Free memory was 159.9 MB in the beginning and 159.0 MB in the end (delta: 828.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-08-12 18:57:58,731 INFO L168 Benchmark]: RCFGBuilder took 189.91 ms. Allocated memory is still 180.4 MB. Free memory was 159.0 MB in the beginning and 148.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-08-12 18:57:58,731 INFO L168 Benchmark]: TraceAbstraction took 559894.96 ms. Allocated memory was 180.4 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 148.0 MB in the beginning and 1.0 GB in the end (delta: -865.9 MB). Peak memory consumption was 882.5 MB. Max. memory is 8.0 GB. [2021-08-12 18:57:58,731 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 0.17 ms. Allocated memory is still 180.4 MB. Free memory is still 162.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 23.96 ms. Allocated memory is still 180.4 MB. Free memory was 161.4 MB in the beginning and 160.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 11.43 ms. Allocated memory is still 180.4 MB. Free memory was 159.9 MB in the beginning and 159.0 MB in the end (delta: 828.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * RCFGBuilder took 189.91 ms. Allocated memory is still 180.4 MB. Free memory was 159.0 MB in the beginning and 148.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 559894.96 ms. Allocated memory was 180.4 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 148.0 MB in the beginning and 1.0 GB in the end (delta: -865.9 MB). Peak memory consumption was 882.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 25]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (1444states) and FLOYD_HOARE automaton (currently 8 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (2601 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 13 procedures, 58 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 559778.7ms, OverallIterations: 202, TraceHistogramMax: 1, EmptinessCheckTime: 648.7ms, AutomataDifference: 473812.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 470.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 17803 SDtfs, 21087 SDslu, 38464 SDs, 0 SdLazy, 7491 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5106.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1591 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 1384 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 22605.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=4463occurred in iteration=0, InterpolantAutomatonStates: 1583, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 60462.2ms AutomataMinimizationTime, 201 MinimizatonAttempts, 273338 StatesRemovedByMinimization, 196 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 80.0ms SsaConstructionTime, 221.7ms SatisfiabilityAnalysisTime, 20977.5ms InterpolantComputationTime, 5050 NumberOfCodeBlocks, 5050 NumberOfCodeBlocksAsserted, 202 NumberOfCheckSat, 4848 ConstructedInterpolants, 0 QuantifiedInterpolants, 117191 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 202 InterpolantComputations, 202 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown